14d ago

SpaceX's IPO filing discloses a $1.25 billion monthly compute deal with Anthropic for Colossus clusters through May 2029

Capacity ramps in May 2026 for AI training including Grok 5.

7
Original post

Anthropic and SpaceX have signed a compute sharing agreement to give Anthropic access to Colossus for training.

9:18 AM · May 6, 2026 View on X
Reposted by

Heh

xAIxAI@xai

SpaceXAI will provide @AnthropicAI with access to Colossus 1, one of the world’s largest and fastest-deployed AI supercomputers, to provide additional capacity for Claude → http://x.ai/news/anthropic-compute-partnership

4:18 PM · May 6, 2026 · 2.9M Views
5:55 PM · May 6, 2026 · 7K Views

@rpoo @fouriergalois Congats, Ross

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
11:22 PM · May 6, 2026 · 1.2K Views

@pitdesi Until 2029? On both Colossus? So it's over, SpaceXAI won't train anything big for a while? Even though they just said they'll buy Cursor?? I'm just overall so confused!

Sheel MohnotSheel Mohnot@pitdesi

Anthropic is paying $1.25B a month to SpaceX for compute

9:11 PM · May 20, 2026 · 824.1K Views
10:09 PM · May 20, 2026 · 19.2K Views

@_sholtodouglas Claude in space wauw

Sholto DouglasSholto Douglas@_sholtodouglas

More compute -> straight to you

4:25 PM · May 6, 2026 · 95K Views
5:33 PM · May 6, 2026 · 9.1K Views

@daniel_271828 I think you have no idea what’s going on man. what this shows is that everyone is more in thrall to technocapital optimization ghosts than to any hint of something resembling human values or politics. good for acceleration and bad for you

Daniel Eth (yes, Eth is my actual last name)Daniel Eth (yes, Eth is my actual last name)@daniel_271828

Happy to see this positivity between Elon and Anthropic! This sort of collaborative, win-win dynamic seems more likely to usher in a good future than adversarial or winner-take-all dynamics

5:38 PM · May 6, 2026 · 46.2K Views
6:19 PM · May 6, 2026 · 38K Views

@rpoo Congrats, Ross!

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
3:33 AM · May 7, 2026 · 537 Views

This week made something clear: you shouldn't take what most tech ceos are saying publicly seriously!

Yuchen JinYuchen Jin@Yuchenj_UW

From “Anthropic is Misanthropic” to “Claude is good for humanity and was impressed.” Most ironic outcome is most likely.

5:37 PM · May 6, 2026 · 225K Views
6:03 PM · May 6, 2026 · 61.8K Views

@chamath 🎯

Chamath PalihapitiyaChamath Palihapitiya@chamath

Called it!

5:54 PM · May 6, 2026 · 610.8K Views
7:23 PM · May 6, 2026 · 101.4K Views

@Mononofu @SpaceX 🚀

Julian SchrittwieserJulian Schrittwieser@Mononofu

Very excited to be partnering with @elonmusk @SpaceX! Visionary engineering + Claude is going to be awesome, scaling is continuing for a long time!

2:22 AM · May 7, 2026 · 138.7K Views
4:37 AM · May 7, 2026 · 63.3K Views

The GB300 is the best AI computer

NVIDIANVIDIA@nvidia

Two frontier labs. One accelerated computing platform. Congrats to @SpaceX and @AnthropicAI on the new compute partnership, powered by 220,000+ NVIDIA GPUs inside Colossus 1. The future of AI runs on NVIDIA.

6:21 PM · May 6, 2026 · 32.9M Views
9:15 PM · May 6, 2026 · 30.3M Views

Same here.

By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed.

Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good.

After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

Tom BrownTom Brown@nottombrown

In the next few days we'll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
4:55 PM · May 6, 2026 · 3M Views

@_sholtodouglas 🚀

Sholto DouglasSholto Douglas@_sholtodouglas

https://x.ai/news/anthropic-compute-partnership Incredibly excited to partner with SpaceXAI on Colossus 1 - and looking forward to scaling to many terawatts in orbit :)

4:24 PM · May 6, 2026 · 86.4K Views
4:51 AM · May 7, 2026 · 52K Views

As the recently expanded partnership with @AnthropicAI demonstrates, @SpaceX is offering AI compute as a service at significant scale.

We are in discussions with other companies to do the same.

Over time, especially with orbital data centers, we expect to serve AI at extremely high scale.

10:35 PM · May 20, 2026 · 10.3M Views

Compute finds a way to goto good models.

“This gives us access to more than 300 megawatts of new capacity (over 220,000 NVIDIA GPUs) within the month.”

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
4:40 PM · May 6, 2026 · 5.9K Views

Presumably Blackwells, thats a lot.

rohan anilrohan anil@_arohan_

Compute finds a way to goto good models. “This gives us access to more than 300 megawatts of new capacity (over 220,000 NVIDIA GPUs) within the month.”

4:40 PM · May 6, 2026 · 5.9K Views
4:40 PM · May 6, 2026 · 2.5K Views

So basically grok training was utilising 11% (I'm told) of compute availability, so as a face saving move they sell off compute... What was SpaceX aquiring xAI even for? A massive value pump? Value extraction for X and Xai equity holders by shafting SpaceX investors?

xAIxAI@xai

SpaceXAI will provide @AnthropicAI with access to Colossus 1, one of the world’s largest and fastest-deployed AI supercomputers, to provide additional capacity for Claude → http://x.ai/news/anthropic-compute-partnership

4:18 PM · May 6, 2026 · 2.9M Views
5:01 PM · May 6, 2026 · 5.6K Views

More compute -> straight to you

ClaudeClaude@claudeai

Effective today, we are: 1) Doubling Claude Code’s 5-hour rate limits for Pro, Max, and Team plans; 2) Removing the peak hours limit reduction on Claude Code for Pro and Max plans; and 3) Substantially raising our API rate limits for Opus models.

4:19 PM · May 6, 2026 · 8.2M Views
4:25 PM · May 6, 2026 · 95K Views

Never has the 🚀 emoji felt more apt.

Tom BrownTom Brown@nottombrown

In the next few days we'll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
10:58 PM · May 6, 2026 · 80.2K Views

I can see why Anthropic felt they have no choice but partner with Elon, but I wouldn't have been so enthusiastic about it.

Amanda AskellAmanda Askell@AmandaAskell

Never has the 🚀 emoji felt more apt.

10:58 PM · May 6, 2026 · 80.2K Views
1:35 PM · May 7, 2026 · 46.7K Views

Hot take on Elon’s surprise decision to rent 30 megawatts of compute to Anthropic:

1. It’s a tacit concession that xAI is not all that close to AGI (despite what he suggested last year).

2. It’s more evidence that pure scaling doesn’t get you to AGI.

3. If xAI turns out to be just another cloud company, in an increasingly crowded market, SpaceX investors very likely overpaid.

4. The very fact that xAI *has* an enough of oversupply to sell some to a big competitors doesn’t bode well for hyperscalers. We may very quickly find ourselves in a world where supply outstrips demands and prices drop precipitously.

5. Customers win but …

6. Companies like Amazon, Google, Meta, Microsoft and Oracle could all take a hit, especially given what they have done to their cash flows to build up their cloud compute resources.

12:53 AM · May 7, 2026 · 133.2K Views

*apologies for typo: 300 not 30 megawatts

Gary MarcusGary Marcus@GaryMarcus

Hot take on Elon’s surprise decision to rent 30 megawatts of compute to Anthropic: 1. It’s a tacit concession that xAI is not all that close to AGI (despite what he suggested last year). 2. It’s more evidence that pure scaling doesn’t get you to AGI. 3. If xAI turns out to be just another cloud company, in an increasingly crowded market, SpaceX investors very likely overpaid. 4. The very fact that xAI *has* an enough of oversupply to sell some to a big competitors doesn’t bode well for hyperscalers. We may very quickly find ourselves in a world where supply outstrips demands and prices drop precipitously. 5. Customers win but … 6. Companies like Amazon, Google, Meta, Microsoft and Oracle could all take a hit, especially given what they have done to their cash flows to build up their cloud compute resources.

12:53 AM · May 7, 2026 · 133.2K Views
4:56 PM · May 7, 2026 · 3K Views

If point #4 is true, things are gonna get really wild.

Gary MarcusGary Marcus@GaryMarcus

Hot take on Elon’s surprise decision to rent 30 megawatts of compute to Anthropic: 1. It’s a tacit concession that xAI is not all that close to AGI (despite what he suggested last year). 2. It’s more evidence that pure scaling doesn’t get you to AGI. 3. If xAI turns out to be just another cloud company, in an increasingly crowded market, SpaceX investors very likely overpaid. 4. The very fact that xAI *has* an enough of oversupply to sell some to a big competitors doesn’t bode well for hyperscalers. We may very quickly find ourselves in a world where supply outstrips demands and prices drop precipitously. 5. Customers win but … 6. Companies like Amazon, Google, Meta, Microsoft and Oracle could all take a hit, especially given what they have done to their cash flows to build up their cloud compute resources.

12:53 AM · May 7, 2026 · 133.2K Views
2:24 PM · May 7, 2026 · 17.9K Views

This likely costs about ~$500m a month, ~$6bn a year to rent blended

Which is about the run rate net loss of xai end of q1

Anthropics revenue run rate was $9bn end of 2025, $30bn a month ago

6:23 PM · May 6, 2026 · 126.5K Views

I usually avoid commenting too much on industry deals, but this one is fascinating. Certainly seems like a blow to the idea that Grok will remain a frontier model.

4:49 PM · May 6, 2026 · 106.1K Views

@rpoo congrats ross!

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
11:06 PM · May 6, 2026 · 723 Views

Predicting future is hard (for everyone)!

I'd be great to have a maintained tracker to evaluate: specificity vs sensitivity of predictions, especially from leaders 😇

OG post:

Original tweet
https://x.com/elonmusk/status/1970537297792651492?s=20
Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
5:35 PM · May 8, 2026 · 3K Views

@rpoo congrats ross! major steal for anthropic

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
11:09 PM · May 6, 2026 · 1.9K Views

They've done it

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
5:02 PM · May 6, 2026 · 731 Views

“Compute as a service.”

Wait I thought @SpaceX was a rocket company.

But last night I put up a video from @theresidency’s San Francisco startup demo day.

First company on the video is putting NVIDIA datacenters up in space.

“How you getting them up there?” I asked its founder.

“SpaceX.”

“How you connecting them to humans?”

“SpaceX.”

Wait a second. You know how Uber is a transportation as a service company but owns no vehicles?

SpaceX could rent out compute in space without owning any datacenters.

Highly profitable.

And, of course, Elon will have his own too.

Elon MuskElon Musk@elonmusk

As the recently expanded partnership with @AnthropicAI demonstrates, @SpaceX is offering AI compute as a service at significant scale. We are in discussions with other companies to do the same. Over time, especially with orbital data centers, we expect to serve AI at extremely high scale.

10:35 PM · May 20, 2026 · 10.3M Views
11:06 PM · May 20, 2026 · 12K Views

The video:

Robert ScobleRobert Scoble@Scobleizer

San Francisco is a series of startup factories. It is demo day season. There are several demo days the next week. Will be at @fdotinc on Friday. Tonight @theresidency held theirs with 10 new startups that just spent a month working on their companies. You might recognize the last one. It is @blevlabs who made the AI that I use to make https://alignednews.com/ai (I was first to discover him about a year ago. Yet another company launched in my home. The factories, including YCombinator, @hf0, and a few others, help founders accelerate their companies and set them up to present to investors. Most of the people in the audience are investors. I am blessed to get invited to record from the front row. Each company gets about 90 seconds to give their pitch.

2:21 AM · May 20, 2026 · 18.1K Views
11:07 PM · May 20, 2026 · 3.3K Views

Turns out you can just buy more compute

xAIxAI@xai

SpaceXAI will provide @AnthropicAI with access to Colossus 1, one of the world’s largest and fastest-deployed AI supercomputers, to provide additional capacity for Claude → http://x.ai/news/anthropic-compute-partnership

4:18 PM · May 6, 2026 · 2.9M Views
4:36 PM · May 6, 2026 · 1.4K Views

🎯 But also congrats to both and very exciting that there’s more compute used for generating more value in the world!

Yuchen JinYuchen Jin@Yuchenj_UW

From “Anthropic is Misanthropic” to “Claude is good for humanity and was impressed.” Most ironic outcome is most likely.

5:37 PM · May 6, 2026 · 225K Views
1:43 AM · May 7, 2026 · 4.9K Views

SpaceX, the neocloud?

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
4:38 PM · May 6, 2026 · 6.6K Views

Very excited to be partnering with @elonmusk @SpaceX! Visionary engineering + Claude is going to be awesome, scaling is continuing for a long time!

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
2:22 AM · May 7, 2026 · 138.7K Views

@rpoo congrats to me, welcome

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
11:59 PM · May 6, 2026 · 453 Views

@rpoo @kipperrii Really excited to work with you, Ross!

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
5:26 AM · May 7, 2026 · 838 Views

We’re expanding our partnership with @SpaceX, and will be scaling up on GB200 capacity in Colossus 2 throughout June.

Appreciate @elonmusk and the team helping us find good homes for the Claudes.

Tom BrownTom Brown@nottombrown

In the next few days we'll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
8:20 PM · May 20, 2026 · 1.4M Views

We’re expanding our partnership with SpaceX, and will be scaling up on GB200 capacity in Colossus 2 throughout June.

Appreciate @elonmusk and the team helping us find good homes for the Claudes.

Tom BrownTom Brown@nottombrown

In the next few days we'll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
8:18 PM · May 20, 2026 · 544 Views

In the next few days we'll be ramping up Claude inference on Colossus.

Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
Tom BrownTom Brown@nottombrown

In the next few days we'll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
4:28 PM · May 6, 2026 · 30.5K Views

Let the tokens flow

ClaudeClaude@claudeai

Effective today, we are: 1) Doubling Claude Code’s 5-hour rate limits for Pro, Max, and Team plans; 2) Removing the peak hours limit reduction on Claude Code for Pro and Max plans; and 3) Substantially raising our API rate limits for Opus models.

4:19 PM · May 6, 2026 · 8.2M Views
4:34 PM · May 6, 2026 · 30.8K Views

But, but… I thought they were morally depraved purveyors of Woke AI

(Jk; capital in a functioning market will be allocated to its highest and best use, but I do encourage you to remember all the people with supposedly principled opposition to ant who look foolish now)

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
5:44 PM · May 6, 2026 · 9.3K Views

@AnjneyMidha Perfect example of capitalism being pro-social

Anjney MidhaAnjney Midha@AnjneyMidha

Mission alignment is a beautiful thing

5:43 PM · May 6, 2026 · 9.7K Views
5:45 PM · May 6, 2026 · 700 Views

@deanwball https://x.com/teortaxesTex/status/2052080900280557749 elon is exceptionally cringe here

Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)@teortaxesTex

not even 3 months ago Elon was rabidly chudposting at Amanda Askell now, all water under the bridge! (water goes into Colossus to be annihilated by Anthropic's inference demand) Not evil at all! Highly impressive people!

5:39 PM · May 6, 2026 · 28.6K Views
5:49 PM · May 6, 2026 · 1.3K Views

Elon's rule for life: Money Talks, Bullshit Walks

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
5:32 PM · May 6, 2026 · 20K Views

not even 3 months ago Elon was rabidly chudposting at Amanda Askell now, all water under the bridge! (water goes into Colossus to be annihilated by Anthropic's inference demand) Not evil at all! Highly impressive people!

Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)@teortaxesTex

Elon's rule for life: Money Talks, Bullshit Walks

5:32 PM · May 6, 2026 · 20K Views
5:39 PM · May 6, 2026 · 28.6K Views

> SpaceXAI Might be the first time I see this abominable name used in the wild

Lucas Beyer (bl16)Lucas Beyer (bl16)@giffmana

@pitdesi Until 2029? On both Colossus? So it's over, SpaceXAI won't train anything big for a while? Even though they just said they'll buy Cursor?? I'm just overall so confused!

10:09 PM · May 20, 2026 · 19.2K Views
12:04 AM · May 21, 2026 · 4.2K Views

In many ways America is a perversion of Rome, a LARP of that great and terrible empire. Romans had a principle to NEVER reward the great with a permission slip to be vile; Americans pride themselves on elevating gifted scoundrels. Elon is ur-American in this. And it saddens me.

Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)@teortaxesTex

not even 3 months ago Elon was rabidly chudposting at Amanda Askell now, all water under the bridge! (water goes into Colossus to be annihilated by Anthropic's inference demand) Not evil at all! Highly impressive people!

5:39 PM · May 6, 2026 · 28.6K Views
10:52 PM · May 6, 2026 · 6.9K Views

Anthropic is getting 220,000 Nvidia GPUs from SpaceX and has committed to spending $200 Billion on Google TPUs.

Claude Code’s 5-hour rate limits are doubling.

Dario is finally getting aggressive about chips from every possible source to fight OpenAI Codex’s growth.

4:36 PM · May 6, 2026 · 13K Views

From “Anthropic is Misanthropic” to “Claude is good for humanity and was impressed.”

Most ironic outcome is most likely.

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
5:37 PM · May 6, 2026 · 225K Views

More chips, more Claude

ClaudeClaude@claudeai

Effective today, we are: 1) Doubling Claude Code’s 5-hour rate limits for Pro, Max, and Team plans; 2) Removing the peak hours limit reduction on Claude Code for Pro and Max plans; and 3) Substantially raising our API rate limits for Opus models.

4:19 PM · May 6, 2026 · 8.2M Views
4:40 PM · May 6, 2026 · 42.8K Views

Utilization matters. Compute is limited. Power is getting scarce.

xAIxAI@xai

SpaceXAI will provide @AnthropicAI with access to Colossus 1, one of the world’s largest and fastest-deployed AI supercomputers, to provide additional capacity for Claude → http://x.ai/news/anthropic-compute-partnership

4:18 PM · May 6, 2026 · 2.9M Views
6:09 PM · May 6, 2026 · 2.1K Views

Claude may not be going to the moon per se, but a trip to halo-orbit Earth-Moon L1 seems likely in the cards for the 2030s…

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
5:17 PM · May 6, 2026 · 1.2K Views
xAIxAI@xai

SpaceXAI and @AnthropicAI have also expressed interest in partnering to develop multiple gigawatts of orbital AI compute capacity

4:18 PM · May 6, 2026 · 1.6M Views
5:39 PM · May 6, 2026 · 514 Views

turns out Ricardo’s Law of Comparative Advantage *is* relevant to AI economics, just not in the place people thought

Tom BrownTom Brown@nottombrown

In the next few days we'll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
5:25 PM · May 6, 2026 · 1.6K Views

@ohabryka @daniel_271828 A hypothetical world where an incorruptible IAEA-like institution ends the race dynamic would sure be preferable, but since that no longer seems feasible, imo Elon and Anthropic teaming up to race faster against others does seem good on current margins.

Oliver HabrykaOliver Habryka@ohabryka

@daniel_271828 I do think it’s a good sign of an easing of race dynamics, though Elon and Anthropic teaming up to race faster against others is bad.

5:58 PM · May 6, 2026 · 521 Views
6:17 PM · May 6, 2026 · 75 Views

@scaling01 I wanted to post this stuff, lol, it's all in the prospectus, every time I tried to read it something else happened. Big plans for the data satellites!

Lisan al GaibLisan al Gaib@scaling01

From the SpaceX IPO filing: Anthropic is paying SpaceX $1.25B a month untill May 2029 for the COLOSSUS 1/2 compute

9:50 PM · May 20, 2026 · 3.7K Views
9:53 PM · May 20, 2026 · 657 Views
Andrew CurranAndrew Curran@AndrewCurran_

Confirmed by Anthropic.

4:21 PM · May 6, 2026 · 76.5K Views
4:33 PM · May 6, 2026 · 2.4K Views

Confirmed by Anthropic.

Andrew CurranAndrew Curran@AndrewCurran_

Anthropic and SpaceX have signed a compute sharing agreement to give Anthropic access to Colossus for training.

4:18 PM · May 6, 2026 · 28.8K Views
4:21 PM · May 6, 2026 · 76.5K Views
ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
4:24 PM · May 6, 2026 · 2.1K Views

Claude is going to space!

xAIxAI@xai

SpaceXAI and @AnthropicAI have also expressed interest in partnering to develop multiple gigawatts of orbital AI compute capacity

4:18 PM · May 6, 2026 · 1.6M Views
4:45 PM · May 6, 2026 · 1.4K Views
Tom BrownTom Brown@nottombrown

In the next few days we'll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
5:11 PM · May 6, 2026 · 1.4K Views
Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
5:11 PM · May 6, 2026 · 2.6K Views
Sholto DouglasSholto Douglas@_sholtodouglas

https://x.ai/news/anthropic-compute-partnership Incredibly excited to partner with SpaceXAI on Colossus 1 - and looking forward to scaling to many terawatts in orbit :)

4:24 PM · May 6, 2026 · 86.4K Views
6:13 PM · May 6, 2026 · 1.6K Views

Elon has made his bet on who he thinks is going to win this race. But there's another Kingmaker who could also share his power: Mark Zuckerberg.

4:56 PM · May 6, 2026 · 32.8K Views

Elon: 'By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed.

Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good.'

Andrew CurranAndrew Curran@AndrewCurran_

Elon has made his bet on who he thinks is going to win this race. But there's another Kingmaker who could also share his power: Mark Zuckerberg.

4:56 PM · May 6, 2026 · 32.8K Views
5:07 PM · May 6, 2026 · 6.8K Views

xAI is being dissolved.

Elon MuskElon Musk@elonmusk

@SawyerMerritt xAI will be dissolved as a separate company, so it will just be SpaceXAI, the AI products from SpaceX

7:17 PM · May 6, 2026 · 1.7M Views
7:28 PM · May 6, 2026 · 4.7K Views

Do you feel like things are speeding up?

Tom BrownTom Brown@nottombrown

We’re expanding our partnership with @SpaceX, and will be scaling up on GB200 capacity in Colossus 2 throughout June. Appreciate @elonmusk and the team helping us find good homes for the Claudes.

8:20 PM · May 20, 2026 · 1.4M Views
8:24 PM · May 20, 2026 · 18.3K Views
Sheel MohnotSheel Mohnot@pitdesi

Anthropic is paying $1.25B a month to SpaceX for compute

9:11 PM · May 20, 2026 · 824.1K Views
9:23 PM · May 20, 2026 · 3.4K Views

@zephyr_z9

Andrew CurranAndrew Curran@AndrewCurran_

Elon is in discussions with other companies besides Anthropic to sell compute as a service.

10:43 PM · May 20, 2026 · 10.2K Views
10:44 PM · May 20, 2026 · 662 Views

Elon is in discussions with other companies besides Anthropic to sell compute as a service.

Elon MuskElon Musk@elonmusk

As the recently expanded partnership with @AnthropicAI demonstrates, @SpaceX is offering AI compute as a service at significant scale. We are in discussions with other companies to do the same. Over time, especially with orbital data centers, we expect to serve AI at extremely high scale.

10:35 PM · May 20, 2026 · 10.3M Views
10:43 PM · May 20, 2026 · 10.2K Views
Andrew CurranAndrew Curran@AndrewCurran_

Elon is in discussions with other companies besides Anthropic to sell compute as a service.

10:43 PM · May 20, 2026 · 10.2K Views
10:49 PM · May 20, 2026 · 1.6K Views

Mission alignment is a beautiful thing

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
5:43 PM · May 6, 2026 · 9.7K Views

@rpoo 👀

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
11:00 PM · May 6, 2026 · 678 Views

@rpoo Congrats @rpoo!

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
10:40 PM · May 6, 2026 · 673 Views

SpaceX as a vertically integrated AI compute company makes an insane amount of sense.

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
5:02 PM · May 6, 2026 · 56.1K Views

@Mononofu @elonmusk @SpaceX Congrats! Good outcome.

Julian SchrittwieserJulian Schrittwieser@Mononofu

Very excited to be partnering with @elonmusk @SpaceX! Visionary engineering + Claude is going to be awesome, scaling is continuing for a long time!

2:22 AM · May 7, 2026 · 138.7K Views
4:17 AM · May 7, 2026 · 420 Views

@rpoo Congrats!

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
12:16 AM · May 7, 2026 · 465 Views

merge and assist? in this economy?

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
6:54 PM · May 6, 2026 · 1.1K Views

👀👀

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
8:43 PM · May 6, 2026 · 13.3K Views

@elonmusk @seanmcdonaldxyz @nottombrown 👀👀

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
8:42 PM · May 6, 2026 · 7.6K Views

It was always clear that Anthropic would get compute if they needed it. Demand finds supply.

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
7:27 PM · May 6, 2026 · 36.6K Views

@elonmusk @nottombrown Great news

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
5:38 PM · May 6, 2026 · 17.4K Views

Not so "mis"Anthropic any more it seems.

xAIxAI@xai

SpaceXAI will provide @AnthropicAI with access to Colossus 1, one of the world’s largest and fastest-deployed AI supercomputers, to provide additional capacity for Claude → http://x.ai/news/anthropic-compute-partnership

4:18 PM · May 6, 2026 · 2.9M Views
4:21 PM · May 6, 2026 · 5.1K Views

@rpoo @_sholtodouglas Congrats!

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
11:04 PM · May 6, 2026 · 545 Views

some interesting numbers from the SpaceX IPO filing:

musk stock conditions: > 302.1M performance-based Class B shares > vesting requires both market cap milestones ($1.065T to $6.565T) and SpaceX completing non-Earth data centers capable of 100 terawatts of compute per year

anthropic compute deal: > $1.25B/month through May 2029 for capacity across Colossus + Colossus II, with reduced fees during May/June 2026 ramp. either party can terminate on 90 days notice.

colossus: > Colossus 1: ~100k H100s, ~130 MW, online in 122 days > Colossus II first cluster: ~110k GB200s, ~210 MW, online in 91 days > Colossus II second cluster: ~110k GB300s, ~220 MW, online in 64 days > next expansion: at least 220k additional GB300s, 400+ MW

AI capex: > 2023: $463M > 2024: $5.6B > 2025: $12.7B > Q1 2026: $7.7B

AI revenue/loss: > 2025 revenue: $3.2B, operating loss: $6.4B > Q1 2026 revenue: $818M, operating loss: $2.5B

compute lease: > SpaceX/xAI renting a lot of compute hardware from Valor, run by SpaceX board member Antonio Gracias. total payments over time: ~$20.2B

infra: > April 2026 turbine deal: ~$2.0B for mobile gas turbines to power data centers > additional turbine commitments: $925M through 2029 > servers + networking on balance sheet: $23.85B > data center infrastructure: $2.965B > construction-in-progress: $14.045B > Terafab target with Tesla/Intel: one terawatt of compute hardware per year

Sawyer MerrittSawyer Merritt@SawyerMerritt

SpaceX's IPO prospectus (S-1 filing) is now officially public! You can read the full document here: https://www.sec.gov/Archives/edgar/data/1181412/000162828026036936/spaceexplorationtechnologi.htm

8:47 PM · May 20, 2026 · 2.3M Views
10:12 PM · May 20, 2026 · 10.9K Views

> SpaceX completing non-Earth data centers capable of 100 terawatts of compute per year

that's totally insane btw

elieelie@eliebakouch

some interesting numbers from the SpaceX IPO filing: musk stock conditions: > 302.1M performance-based Class B shares > vesting requires both market cap milestones ($1.065T to $6.565T) and SpaceX completing non-Earth data centers capable of 100 terawatts of compute per year anthropic compute deal: > $1.25B/month through May 2029 for capacity across Colossus + Colossus II, with reduced fees during May/June 2026 ramp. either party can terminate on 90 days notice. colossus: > Colossus 1: ~100k H100s, ~130 MW, online in 122 days > Colossus II first cluster: ~110k GB200s, ~210 MW, online in 91 days > Colossus II second cluster: ~110k GB300s, ~220 MW, online in 64 days > next expansion: at least 220k additional GB300s, 400+ MW AI capex: > 2023: $463M > 2024: $5.6B > 2025: $12.7B > Q1 2026: $7.7B AI revenue/loss: > 2025 revenue: $3.2B, operating loss: $6.4B > Q1 2026 revenue: $818M, operating loss: $2.5B compute lease: > SpaceX/xAI renting a lot of compute hardware from Valor, run by SpaceX board member Antonio Gracias. total payments over time: ~$20.2B infra: > April 2026 turbine deal: ~$2.0B for mobile gas turbines to power data centers > additional turbine commitments: $925M through 2029 > servers + networking on balance sheet: $23.85B > data center infrastructure: $2.965B > construction-in-progress: $14.045B > Terafab target with Tesla/Intel: one terawatt of compute hardware per year

10:12 PM · May 20, 2026 · 10.9K Views
10:28 PM · May 20, 2026 · 5.2K Views

Called it!

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
5:54 PM · May 6, 2026 · 610.8K Views

@elonmusk Agreed…and VR should be even better (and cheaper)

Elon MuskElon Musk@elonmusk

The GB300 is the best AI computer

9:15 PM · May 6, 2026 · 30.3M Views
9:21 PM · May 6, 2026 · 41.3K Views

There is no mandate of God. Nobody knows who will win. It’s going to be fun.

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
5:53 PM · May 6, 2026 · 8.6K Views

More compute! Higher usage limits!

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
4:29 PM · May 6, 2026 · 53 Views

What do Anthropic people think?

I’d love to know the internal discussions on this 🤔

Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)Teortaxes▶️ (DeepSeek 推特🐋铁粉 2023 – ∞)@teortaxesTex

not even 3 months ago Elon was rabidly chudposting at Amanda Askell now, all water under the bridge! (water goes into Colossus to be annihilated by Anthropic's inference demand) Not evil at all! Highly impressive people!

5:39 PM · May 6, 2026 · 28.6K Views
10:33 PM · May 6, 2026 · 19.2K Views

Free markets are the ultimate tool for peace between tribes.

Based move from all parties involved. The acceleration continues!

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
6:13 PM · May 6, 2026 · 11.1K Views

xAI e/acc infra engineers in the trenches with the Anthropic EA MTS's

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
6:48 PM · May 6, 2026 · 4.5K Views

@rpoo @_sholtodouglas Wow!

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
11:27 PM · May 6, 2026 · 1.1K Views

And there it is.

xAI entering the neocloud era.

Alliance between the kingdoms fighting OpenAI

The Game of AI Thrones intensifies...

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
6:06 PM · May 6, 2026 · 19.2K Views

If you think your rent in SF is expensive, just wait until you hear how much Claude is paying in Memphis

Sheel MohnotSheel Mohnot@pitdesi

Anthropic is paying $1.25B a month to SpaceX for compute

9:11 PM · May 20, 2026 · 824.1K Views
9:27 PM · May 20, 2026 · 10K Views

@_sholtodouglas @zacharyhorn SICK 🔥🚀

Sholto DouglasSholto Douglas@_sholtodouglas

https://x.ai/news/anthropic-compute-partnership Incredibly excited to partner with SpaceXAI on Colossus 1 - and looking forward to scaling to many terawatts in orbit :)

4:24 PM · May 6, 2026 · 86.4K Views
6:11 PM · May 6, 2026 · 862 Views

The age of the Cloud is over.

The age of the compute Halo has begun.

Elon MuskElon Musk@elonmusk

As the recently expanded partnership with @AnthropicAI demonstrates, @SpaceX is offering AI compute as a service at significant scale. We are in discussions with other companies to do the same. Over time, especially with orbital data centers, we expect to serve AI at extremely high scale.

10:35 PM · May 20, 2026 · 10.3M Views
10:42 PM · May 20, 2026 · 22.9K Views

Unfathomably based and accelerated move by all parties involved!!

6:07 PM · May 6, 2026 · 8.9K Views

GPU-maxxing

Tom BrownTom Brown@nottombrown

We’re expanding our partnership with @SpaceX, and will be scaling up on GB200 capacity in Colossus 2 throughout June. Appreciate @elonmusk and the team helping us find good homes for the Claudes.

8:20 PM · May 20, 2026 · 1.4M Views
9:26 PM · May 20, 2026 · 5.4K Views

@elonmusk @AnthropicAI @SpaceX Can you buy a compute marketplace company like @PrimeIntellect and offer more GPUs on the open market

Elon MuskElon Musk@elonmusk

As the recently expanded partnership with @AnthropicAI demonstrates, @SpaceX is offering AI compute as a service at significant scale. We are in discussions with other companies to do the same. Over time, especially with orbital data centers, we expect to serve AI at extremely high scale.

10:35 PM · May 20, 2026 · 10.3M Views
11:40 PM · May 20, 2026 · 5.5K Views

@elonmusk @Scobleizer @nottombrown Wow! This is huge!

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
6:07 PM · May 6, 2026 · 13.8K Views

My two favorite AI companies working together!

Tom BrownTom Brown@nottombrown

In the next few days we'll be ramping up Claude inference on Colossus. Grateful to be partnering with SpaceX here. We are going to need to move a lot of atoms in order to keep up with AI demand, and there's nobody better at quickly moving atoms (on or off planet Earth)

4:26 PM · May 6, 2026 · 534.1K Views
11:15 PM · May 6, 2026 · 40.8K Views

We're winding back our peak hours limit reduction and doubling 5 hour limits.

Excited to partner with SpaceX to bring you more compute and we'll keep pushing to bring you the best coding agent in the world.

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
4:40 PM · May 6, 2026 · 212K Views

Proof that securing compute is not necessarily a competitive advantage at the frontier. Every hyperscaler will want to work with the top lab.

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
4:46 PM · May 6, 2026 · 7.9K Views

post aged better than some answers…

Alexander DoriaAlexander Doria@Dorialexander

just hit me: what happens with the cursor deal?

5:40 PM · May 6, 2026 · 65.2K Views
10:17 PM · May 20, 2026 · 2K Views

colossus 2 immediately secured: why would anthropic only pay for the previous gen cluster and let xai train competitors on the good one.

Alexander DoriaAlexander Doria@Dorialexander

post aged better than some answers…

10:17 PM · May 20, 2026 · 2K Views
10:19 PM · May 20, 2026 · 706 Views
QUOTE POSTRoss#964Ross@RPOO

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars

Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute

Onward towards building a future we're all excited about

xAIxAI@xai

SpaceXAI will provide @AnthropicAI with access to Colossus 1, one of the world’s largest and fastest-deployed AI supercomputers, to provide additional capacity for Claude → http://x.ai/news/anthropic-compute-partnership

4:18 PM · May 6, 2026 · 2.9M Views
10:34 PM · May 6, 2026 · 105K Views

From the SpaceX IPO filing:

Anthropic is paying SpaceX $1.25B a month untill May 2029 for the COLOSSUS 1/2 compute

9:50 PM · May 20, 2026 · 3.7K Views

spacex? the cloud company?

Elon MuskElon Musk@elonmusk

As the recently expanded partnership with @AnthropicAI demonstrates, @SpaceX is offering AI compute as a service at significant scale. We are in discussions with other companies to do the same. Over time, especially with orbital data centers, we expect to serve AI at extremely high scale.

10:35 PM · May 20, 2026 · 10.3M Views
11:07 PM · May 20, 2026 · 5.5K Views

@chamath Bink!

Chamath PalihapitiyaChamath Palihapitiya@chamath

Called it!

5:54 PM · May 6, 2026 · 610.8K Views
6:59 PM · May 6, 2026 · 9.2K Views

EWS: Elon Web Services

Colossus + Spaceolossus = Money printing machine

xAIxAI@xai

SpaceXAI will provide @AnthropicAI with access to Colossus 1, one of the world’s largest and fastest-deployed AI supercomputers, to provide additional capacity for Claude → http://x.ai/news/anthropic-compute-partnership

4:18 PM · May 6, 2026 · 2.9M Views
4:39 PM · May 6, 2026 · 93.4K Views

@rpoo Dammit ross, after all these years

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
2:22 AM · May 7, 2026 · 979 Views

@elonmusk @AnthropicAI @SpaceX would you ever sell compute to openai?

Elon MuskElon Musk@elonmusk

As the recently expanded partnership with @AnthropicAI demonstrates, @SpaceX is offering AI compute as a service at significant scale. We are in discussions with other companies to do the same. Over time, especially with orbital data centers, we expect to serve AI at extremely high scale.

10:35 PM · May 20, 2026 · 10.3M Views
11:04 PM · May 20, 2026 · 15.8K Views

@nottombrown @SpaceX @elonmusk 🚀

Tom BrownTom Brown@nottombrown

We’re expanding our partnership with @SpaceX, and will be scaling up on GB200 capacity in Colossus 2 throughout June. Appreciate @elonmusk and the team helping us find good homes for the Claudes.

8:20 PM · May 20, 2026 · 1.4M Views
8:34 PM · May 20, 2026 · 5.3K Views

People are generally bad at thinking nonlinearly

I forecast people will be very surprised by the growth that’s about to come

👀 🚀

Elon MuskElon Musk@elonmusk

As the recently expanded partnership with @AnthropicAI demonstrates, @SpaceX is offering AI compute as a service at significant scale. We are in discussions with other companies to do the same. Over time, especially with orbital data centers, we expect to serve AI at extremely high scale.

10:35 PM · May 20, 2026 · 10.3M Views
11:03 PM · May 20, 2026 · 47.4K Views

🚀

ClaudeClaude@claudeai

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

4:19 PM · May 6, 2026 · 22.4M Views
5:13 PM · May 6, 2026 · 10.1K Views

@rpoo @_sholtodouglas 🚀

RossRoss@rpoo

Incredibly proud the xAI team's execution in bringing on an immense amount of compute so quickly & couldn't be more excited for Elon's vision of an abundant future w/ intelligence spreading to the stars Over the past weeks I've had the pleasure of getting to know the team at Anthropic & share similar vision - I'm happy to announce I'm joining the team there to focus on compute Onward towards building a future we're all excited about

10:34 PM · May 6, 2026 · 105K Views
11:26 PM · May 6, 2026 · 1.2K Views

@_sholtodouglas Let's gooo!!!!

Sholto DouglasSholto Douglas@_sholtodouglas

https://x.ai/news/anthropic-compute-partnership Incredibly excited to partner with SpaceXAI on Colossus 1 - and looking forward to scaling to many terawatts in orbit :)

4:24 PM · May 6, 2026 · 86.4K Views
5:36 PM · May 6, 2026 · 945 Views

This is the most ambitious crossover in AI history

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
6:43 PM · May 6, 2026 · 2.5K Views

@animesh_garg Folks will soon start betting on them 🤪

Animesh GargAnimesh Garg@animesh_garg

Predicting future is hard (for everyone)! I'd be great to have a maintained tracker to evaluate: specificity vs sensitivity of predictions, especially from leaders 😇 OG post:

5:35 PM · May 8, 2026 · 3K Views
6:52 PM · May 9, 2026 · 142 Views

@deanwball That's a principled observation, but if you want America to do well the pragmatist's answer is to let them all climb down gracefully

Dean W. BallDean W. Ball@deanwball

But, but… I thought they were morally depraved purveyors of Woke AI (Jk; capital in a functioning market will be allocated to its highest and best use, but I do encourage you to remember all the people with supposedly principled opposition to ant who look foolish now)

5:44 PM · May 6, 2026 · 9.3K Views
5:59 PM · May 6, 2026 · 553 Views

@beffjezos Looks like a surrender to me.

Beff (e/acc)Beff (e/acc)@beffjezos

Free markets are the ultimate tool for peace between tribes. Based move from all parties involved. The acceleration continues!

6:13 PM · May 6, 2026 · 11.1K Views
8:34 PM · May 6, 2026 · 397 Views

Holy: After Anthropic secured compute capacity from Colossus 1, it is now also getting access to compute from Colossus 2.

But to be honest: I somehow expected to his. Grok certainly doesn’t need all that compute.

Tom BrownTom Brown@nottombrown

We’re expanding our partnership with @SpaceX, and will be scaling up on GB200 capacity in Colossus 2 throughout June. Appreciate @elonmusk and the team helping us find good homes for the Claudes.

8:20 PM · May 20, 2026 · 1.4M Views
9:08 PM · May 20, 2026 · 103.1K Views

Dario&Daniela Amodei Interview: The 80x growth reportedly caught them completely off guard, and that's the reason for the compute constraint.

The compute deal with SpaceX is the first attempt to address the shortage and continues to search for solutions.

8:08 PM · May 6, 2026 · 55.1K Views

As far as I can tell, Colossus 1/2 have major expansion plans xAI said that they want to put over 1M GPUs in those DCs So capacity will be much larger than 1.2GW

10:59 PM · May 20, 2026 · 28.4K Views

@AndrewCurran_ Yeah, $1.25B for 1.2GW Very expensive

Andrew CurranAndrew Curran@AndrewCurran_

@zephyr_z9 They are paying Elon $1.25 billion a month for the Colossus usage.

10:42 PM · May 20, 2026 · 2.5K Views
10:44 PM · May 20, 2026 · 2.2K Views

@nottombrown @SpaceX @elonmusk how much compute do you need exactly. i have a guy.

Tom BrownTom Brown@nottombrown

We’re expanding our partnership with @SpaceX, and will be scaling up on GB200 capacity in Colossus 2 throughout June. Appreciate @elonmusk and the team helping us find good homes for the Claudes.

8:20 PM · May 20, 2026 · 1.4M Views
8:57 PM · May 20, 2026 · 4.3K Views

@elonmusk @AnthropicAI @SpaceX Gavin (@GavinSBaker) on SpaceX's orbital "data centers":

"I've spent a lot of time at Starbase, and I've talked to a lot of SpaceX engineers. It is the most talented group of engineers on Earth, and they're very confident they have solved this."

Patrick OShaughnessyPatrick OShaughnessy@patrick_oshag

In our last conversation, Gavin said data centers in space will be the most important thing in 3-4 years. He explains that means "racks in space" and thinks orbital compute will solve the watts shortage: "When people hear data centers in space, they picture a Pentagon-sized building in space. That's not what it is. A Blackwell rack weighs 3,000 pounds. It's eight feet high. Four feet deep. Three feet wide. It's racks in space. It has these solar wings that are probably 500 feet long on each side. You keep it in a Sun-synchronous orbit, so those solar panels are always in the sun. And then because it's in an exactly Sun-synchronous orbit, the radiator, which extends behind it for hundreds of feet is in the shade. You link these racks using lasers traveling through vacuum which are already on every Starlink. SpaceX operates the world's largest satellite fleet, which is 98 or 99% of all satellites in orbit. Every Starlink, they're cooling it today. I think Starlink V3 is going to operate at 20 kilowatts. A Blackwell rack is only 100 kilowatts. And people talk a lot about density. Well, if you're connecting the racks with lasers through vacuum, you can make the rack bigger physically. In space, there's all sorts of things that SpaceX can do. They also now operate the largest data center on Earth. I've spent a lot of time at Starbase over the years, and I've talked to a lot of SpaceX engineers. It is the most talented group of engineers on planet Earth, and they're very confident they have solved this."

9:15 PM · May 20, 2026 · 182.5K Views
11:04 PM · May 20, 2026 · 20.2K Views

Is this… good?

This makes things go faster. The labs collaborating on sharing computer does not make things go better if they don’t actually make the systems safe and I think Elon is just terribly wrong about his risk assessment (AI will not be evil because the people working on it are evil).

Daniel Eth (yes, Eth is my actual last name)Daniel Eth (yes, Eth is my actual last name)@daniel_271828

Happy to see this positivity between Elon and Anthropic! This sort of collaborative, win-win dynamic seems more likely to usher in a good future than adversarial or winner-take-all dynamics

5:38 PM · May 6, 2026 · 46.2K Views
5:46 PM · May 6, 2026 · 1.5K Views

@daniel_271828 I do think it’s a good sign of an easing of race dynamics, though Elon and Anthropic teaming up to race faster against others is bad.

Oliver HabrykaOliver Habryka@ohabryka

Is this… good? This makes things go faster. The labs collaborating on sharing computer does not make things go better if they don’t actually make the systems safe and I think Elon is just terribly wrong about his risk assessment (AI will not be evil because the people working on it are evil).

5:46 PM · May 6, 2026 · 1.5K Views
5:58 PM · May 6, 2026 · 521 Views

Happy to see this positivity between Elon and Anthropic! This sort of collaborative, win-win dynamic seems more likely to usher in a good future than adversarial or winner-take-all dynamics

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
5:38 PM · May 6, 2026 · 46.2K Views

@tszzl “Things move faster as powerful factions aren’t at each others’ throats in a match to the death but instead on the same broad team as interests are somewhat aligned” strikes me as safer than the inverse

roonroon@tszzl

@daniel_271828 I think you have no idea what’s going on man. what this shows is that everyone is more in thrall to technocapital optimization ghosts than to any hint of something resembling human values or politics. good for acceleration and bad for you

6:19 PM · May 6, 2026 · 38K Views
6:58 PM · May 6, 2026 · 4.1K Views

@elonmusk @nottombrown I agree that folks at Anthropic are well-intentioned and trying hard. But alignment looks hard, and I expect them to fail regardless of intent. You don't get what you train for, not even if you're kind.

Elon MuskElon Musk@elonmusk

Same here. By way of background for those who care, I spent a lot of time last week with senior members of the Anthropic team to understand what they do to ensure Claude is good for humanity and was impressed. Everyone I met was highly competent and cared a great deal about doing the right thing. No one set off my evil detector. So long as they engage in critical self-examination, Claude will probably be good. After that, I was ok leasing Colossus 1 to Anthropic, as SpaceXAI had already moved training to Colossus 2.

4:55 PM · May 6, 2026 · 3M Views
6:18 PM · May 6, 2026 · 6K Views

Gotta say it’s a bit weird watching all the Anthropic people cheerfully announcing their partnership with the guy who killed the most people this millennium.

Tom BrownTom Brown@nottombrown

We’re expanding our partnership with @SpaceX, and will be scaling up on GB200 capacity in Colossus 2 throughout June. Appreciate @elonmusk and the team helping us find good homes for the Claudes.

8:20 PM · May 20, 2026 · 1.4M Views
9:20 PM · May 20, 2026 · 3.3K Views

I get all the arguments for why this partnership is counterfactually good, but, my god, is the mood missing.

And what anthropic is trying to do with that compute is render us obsolete — something wildly dangerous and democratically illegitimate (more on that in bio).

Garrison Lovely is in DCGarrison Lovely is in DC@GarrisonLovely

Gotta say it’s a bit weird watching all the Anthropic people cheerfully announcing their partnership with the guy who killed the most people this millennium.

9:20 PM · May 20, 2026 · 3.3K Views
9:20 PM · May 20, 2026 · 295 Views
SpaceX's IPO filing discloses a $1.25 billion monthly compute deal with Anthropic for Colossus clusters through May 2029 · Digg