20h ago

Andrej Karpathy joins Anthropic to conduct research and development on frontier large language models after prior roles at OpenAI and Tesla

He remains committed to education and will resume projects later.

0
Original post

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

8:05 AM · May 19, 2026 View on X
Reposted by

@karpathy Woo, welcome!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:52 PM · May 19, 2026 · 7.2K Views

@karpathy Bigger news than Google IO!! Congrats Andrej!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:35 PM · May 19, 2026 · 39.3K Views

Andrej @karpathy is back in the game! I would have loved for him to rejoin @OpenAI, but I'm happy he's at any frontier lab pushing the field forward. It’s easy to frame this as zero-sum among the labs, but in truth we’re collectively advancing the most important tech of our era.

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:04 PM · May 19, 2026 · 159K Views

@karpathy Will be awesome to work together again!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:28 PM · May 19, 2026 · 23.4K Views

@karpathy Congrats Andrej - sorry to hear you won't be dedicated to education any more, but excited to see what you achieve at Anthropic.

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
10:13 PM · May 19, 2026 · 14.3K Views

"Staying independent is great for freedom, but risks your intuition "drifting" without intimate access to the latest opaque frontier models."

Recognize where your understanding drifts, and return to the "expert" (a frontier lab) to update it. Live like "DAgger".

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:18 PM · May 19, 2026 · 7K Views

He's the chosen one. Knowing Andrej briefly, his passion will remain in education and empowerment. I'm sure he will continue to be a great supporter for the broader community.

4:23 PM · May 19, 2026 · 2K Views

Very happy for Karpathy. Also very lonely times in open science.

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:32 PM · May 19, 2026 · 63.7K Views

.@karpathy at @AnthropicAI = more open-source from them? They're already contributing datasets: https://huggingface.co/Anthropic but would be super cool to see more (massive potential for impact obviously!)

4:29 PM · May 19, 2026 · 13.6K Views

@natolambert

Nathan LambertNathan Lambert@natolambert

Very happy for Karpathy. Also very lonely times in open science.

3:32 PM · May 19, 2026 · 63.7K Views
9:23 PM · May 19, 2026 · 7.8K Views

@karpathy I'm so excited to work together!!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:32 PM · May 19, 2026 · 26.6K Views

@karpathy Congrats on the next thing! Most importantly: have fun with Research & Development. (I will try to keep up with the Reproduce & Debug part :D)

Looking forward to learn from your learnings at the frontier.

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:19 PM · May 19, 2026 · 151.1K Views

As companies approach AGI it would be illogical for most not to go and work there.

AGI is a much bigger deal than most people still seem to believe & it is only by most forecasts a few years away (if not arrived already!).

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:41 PM · May 19, 2026 · 13.2K Views

@Yuchenj_UW I mean Anthropic is also @SpaceX's largest customer!

Yuchen JinYuchen Jin@Yuchenj_UW

Andrej joined Anthropic. Even Elon couldn’t help but praise Anthropic. Anthropic really aura-farmed Google I/O today.

3:50 PM · May 19, 2026 · 30.1K Views
4:24 PM · May 19, 2026 · 1.5K Views

Breaking: Andrej Karpathy just filed his Q1 2026 13F.

Here's everything you need to know about his recent 13F Top 10 positions:

1. VanEck Semiconductor ETF - $SMH - [Put] — $2.04B 2. Nvidia - $NVDA - [Put] — $1.57B 3. Oracle - $ORCL - [Put] — $1.07B 4. Broadcom - $AVGO - [Put] — $1.01B 5. Advanced Micro Devices - $AMD - [Put] — $969M 6. Bloom Energy - $BE — $879M 7. SanDisk - $SNDK — $724M 8. Micron - $MU - [Put] — $584M 9. CoreWeave - $CRWV — $556M 10. Taiwan Semiconductor - $TSM - [Put] — $535M

New positions: • $SMH, $NVDA, $ORCL, $AVGO, $AMD, $MU, $TSM, $ASML, $INTC, $GLW — all puts • $MU [Call] — $422M • $TSM [Call] — $355M • $SNDK [Call] — $389M

Summary: He kept his AI infrastructure longs and opened $8.45B in new puts against tech and semiconductor

atlasatlas@creatine_cycle

BREAKING: after just 4 hours at Anthropic @karpathy will be stepping away to join the A16Z new media team. "I think the next few years at the frontier of attention and growth hacking will be especially formative"

6:23 PM · May 19, 2026 · 604.9K Views
6:45 PM · May 19, 2026 · 576K Views

rsi is here. jesus

Nicholas JosephNicholas Joseph@nickevanjoseph

Excited to welcome Andrej to the Pretraining team! He'll be building a team focused on using Claude to accelerate pretraining research itself. I can’t think of anyone better suited to do it — looking forward to what we build together!

3:34 PM · May 19, 2026 · 228.7K Views
5:34 PM · May 19, 2026 · 8.9K Views

@karpathy congrats Andrej!! We will miss you

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:44 PM · May 19, 2026 · 15.4K Views

Time for some open source!!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:28 PM · May 19, 2026 · 7.5K Views

@karpathy 😲

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:28 PM · May 19, 2026 · 17.1K Views

I feel like everyone and their mother is joining Anthropic lol

6:12 PM · May 19, 2026 · 3.6K Views

@karpathy Woo excited to work with you Andrej!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
6:22 PM · May 19, 2026 · 304 Views

@karpathy Huge hire!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:14 PM · May 19, 2026 · 30.2K Views

@karpathy Welcome!! So excited we get to work together 👋

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:15 PM · May 19, 2026 · 362.9K Views

welcome, Andrej

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:21 PM · May 19, 2026 · 1.3K Views

@karpathy @PaulYacoubian Wow, congrats to Anthropic, and hope you enjoy doing R&D!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:41 PM · May 19, 2026 · 7.2K Views

@karpathy yippee

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:25 PM · May 19, 2026 · 1.7K Views

@karpathy @sammcallister Excited to get to work with you again, Andrej!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:42 PM · May 19, 2026 · 13.2K Views

Some big news in AI, from @karpathy

Congrats, @DarioAmodei, @jackclarkSF and the whole team at @AnthropicAI

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:27 PM · May 19, 2026 · 3.3K Views

@polynoamial @karpathy @OpenAI Very classy.

Noam BrownNoam Brown@polynoamial

Andrej @karpathy is back in the game! I would have loved for him to rejoin @OpenAI, but I'm happy he's at any frontier lab pushing the field forward. It’s easy to frame this as zero-sum among the labs, but in truth we’re collectively advancing the most important tech of our era.

4:04 PM · May 19, 2026 · 159K Views
4:59 PM · May 19, 2026 · 1.7K Views

Unbelievable narrative momentum OpenAI has got to step up their game

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:33 PM · May 19, 2026 · 13K Views

Anthropic has claimed the mandate of heaven.

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:09 PM · May 19, 2026 · 96.4K Views

@karpathy wowow, congrats to Anthropic!

looking forward to seeing new videos and cool repos and products you will build there :)

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:11 PM · May 19, 2026 · 21.3K Views

Andrej joined Anthropic. Even Elon couldn’t help but praise Anthropic. Anthropic really aura-farmed Google I/O today.

3:50 PM · May 19, 2026 · 30.1K Views

@karpathy Welcome to the team!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:57 PM · May 19, 2026 · 24.5K Views

@karpathy @_arohan_ omg

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:45 PM · May 19, 2026 · 408 Views

@karpathy So cool you are going back to R&D. Congrats. Lots of great opportunities in education, as always. Looking forward to learning more from your insights and all your shares.

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:51 PM · May 19, 2026 · 20.3K Views

Wow! Karpathy has joined Anthropic!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:06 PM · May 19, 2026 · 44.5K Views
Boris ChernyBoris Cherny@bcherny

@karpathy Welcome!! So excited we get to work together 👋

3:15 PM · May 19, 2026 · 362.9K Views
3:29 PM · May 19, 2026 · 1.4K Views
Jack ClarkJack Clark@jackclarkSF

@karpathy Will be awesome to work together again!

3:28 PM · May 19, 2026 · 23.4K Views
3:30 PM · May 19, 2026 · 2K Views
Lisan al GaibLisan al Gaib@scaling01

Karpathy hasn't said what exactly he's going to work on, but I don't think he's getting into the weeds of optimizers or hardware or whatever I think he's going to work on something higher-level my best guess is auto-research

4:19 PM · May 19, 2026 · 187.5K Views
4:20 PM · May 19, 2026 · 894 Views

Karpathy is forming a new pre-training team that will focus on teaching Claude to improve Claude.

4:31 PM · May 19, 2026 · 1.1K Views
Lisan al GaibLisan al Gaib@scaling01

Karpathy was literally hired for RSI he's starting a new pre-training team at Anthropic that focuses on autoresearch per Axios

4:28 PM · May 19, 2026 · 177K Views
4:33 PM · May 19, 2026 · 2.1K Views

Confirmed by Anthropic to CNBC.

Andrew CurranAndrew Curran@AndrewCurran_
4:33 PM · May 19, 2026 · 2.1K Views
4:49 PM · May 19, 2026 · 1.1K Views

there are some decisions that reverberate through the universe across space and time and change the texture of reality as we know it

this is one of them

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
8:23 PM · May 19, 2026 · 24.6K Views

@karpathy Welcome!! Excited to work together :D

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:02 PM · May 19, 2026 · 24.1K Views

@karpathy Epic! Once you’re inside can we get a video on how to train mythos in under an hour?

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:40 PM · May 19, 2026 · 112.6K Views

I'm not sure what I'm thinking about it. Anyway, good luck!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:13 PM · May 19, 2026 · 2.1K Views

@karpathy Welcome!!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
9:14 PM · May 19, 2026 · 154 Views

🫨

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:08 PM · May 19, 2026 · 20.5K Views

@karpathy ANDREJ FROM THE TOP ROPE!!!

Congrats!!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:13 PM · May 19, 2026 · 37.7K Views

@karpathy this is awesome 🔥🔥🔥

as if anthropic couldn't accelerate even more!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:31 PM · May 19, 2026 · 8.9K Views

@shaneguML I always appreciate your commitment to reminding people about dagger

Shane GuShane Gu@shaneguML

"Staying independent is great for freedom, but risks your intuition "drifting" without intimate access to the latest opaque frontier models." Recognize where your understanding drifts, and return to the "expert" (a frontier lab) to update it. Live like "DAgger".

4:18 PM · May 19, 2026 · 7K Views
6:32 PM · May 19, 2026 · 123 Views

Whoa!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:44 PM · May 19, 2026 · 4.5K Views

That’s it, they just hired Karpathy. No one else will get hired again. If you have not been hired yet, you are now officially part of the permanent underclass.

7:18 PM · May 19, 2026 · 41.2K Views

claude is happy

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:39 PM · May 19, 2026 · 2.9K Views

@karpathy wowww congrats! what part of R&D will you be working on if you can share?

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:18 PM · May 19, 2026 · 5.3K Views

@swyx cute claude version of this meme 🥺

elieelie@eliebakouch

claude is happy

3:39 PM · May 19, 2026 · 2.9K Views
5:06 PM · May 19, 2026 · 754 Views

rip the greatest YouTuber of all time

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
6:58 PM · May 19, 2026 · 1.7K Views

OH: “This is like LeBron James joining Michael Jordan and the Bulls.”

Every other Frontier Lab: “Shit…”

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
6:08 PM · May 19, 2026 · 517.3K Views

@karpathy Congrats Andrej and @AnthropicAI !

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:19 PM · May 19, 2026 · 349 Views

@karpathy Super congrats Andrej!! Can't wait for more cool educational vids and repos!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:39 PM · May 19, 2026 · 948 Views

Okay, I suppose having Anthropic eventually hire every person on Earth would be *one* form of UBI...

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:52 PM · May 19, 2026 · 2K Views

Polylaborous AI researcher

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
12:02 AM · May 20, 2026 · 6K Views

Anthropic is the New York Yankees of AI at this point.

Near monopoly on S-tier talent

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:23 PM · May 19, 2026 · 14.1K Views

Talking about Thermo Compute live on MTS

MTSMTS@MTSlive

KARPATHY JOINS ANTHROPIC | NEW GEMINI? | GOOGLE X BLACKSTONE | META LAYOFFS https://x.com/i/broadcasts/1NxaragYXaNKj

4:05 PM · May 19, 2026 · 22.7K Views
11:26 PM · May 19, 2026 · 3.9K Views

@rpoo @karpathy !!!

RossRoss@rpoo

@karpathy Excited to work with you again!

3:42 PM · May 19, 2026 · 14.4K Views
4:22 PM · May 19, 2026 · 484 Views

@karpathy Welcome back in the game

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:29 PM · May 19, 2026 · 15.6K Views

My favorite person in AI joined my favorite AI company (well, shared favorite with xAI)

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
5:35 PM · May 19, 2026 · 49K Views

the future is bright, lets get to work

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:41 PM · May 19, 2026 · 61.6K Views

@karpathy welcome!!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:51 PM · May 19, 2026 · 72.8K Views

@karpathy Holy shit

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:36 PM · May 19, 2026 · 4.8K Views

@karpathy anthropic wins

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:33 PM · May 19, 2026 · 38.6K Views

@karpathy Congrats! And big win for Anthropic who will attract top researchers just from your presence

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:25 PM · May 19, 2026 · 1.7K Views

@karpathy Excited to work with you again!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:42 PM · May 19, 2026 · 14.4K Views

> October 2025: "AI agents are slop" > May 2026: joins Anthropic

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:20 PM · May 19, 2026 · 35.9K Views

holy shit

Karpathy joined Anthropic

guess who has the mandate

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:19 PM · May 19, 2026 · 20.7K Views

Andrej probably got more views on this post than Google on the entire Gemini 3.5 Flash launch

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
6:43 PM · May 19, 2026 · 16.1K Views

Karpathy joins Anthropic to build RSI and Yann is still yapping about how LLMs are flawed

4:34 PM · May 19, 2026 · 21.4K Views

im hearing rumors that Anthropic gave Andrej a 6 figure salary

(hourly)

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
7:05 PM · May 19, 2026 · 122.2K Views

@karpathy curious, did you have to go through multiple rounds of interviews?

or did you just say "hi i want to join" then have one interview with the team and they let you in? (because that's what I imagine. you clearly have all of the expertise necessary)

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:22 PM · May 19, 2026 · 183.6K Views

we have entered the kino zone

Lisan al GaibLisan al Gaib@scaling01

> October 2025: "AI agents are slop" > May 2026: joins Anthropic

3:20 PM · May 19, 2026 · 35.9K Views
3:57 PM · May 19, 2026 · 13.4K Views

CTO -> MTS? How about Sensei -> MTS?

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:59 PM · May 19, 2026 · 738 Views

@karpathy Congrats! MTS FTW :)

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:57 PM · May 19, 2026 · 287 Views

WHAT

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:12 PM · May 19, 2026 · 27K Views

this is like a leading franchise recruiting someone who’s simultaneously the best player & the league’s best broadcaster & its most watched developmental coach all in one.

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:43 PM · May 19, 2026 · 69.4K Views

@karpathy this is bigger news than google io!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:27 PM · May 19, 2026 · 60.8K Views

@karpathy Welcome to the team! 😍

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:53 PM · May 19, 2026 · 2.8K Views

What's happening!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:19 PM · May 19, 2026 · 1.4K Views

this was not on my bingo card

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:23 PM · May 19, 2026 · 3.9K Views

@karpathy huge. congrats!!!!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:24 PM · May 19, 2026 · 10.4K Views

@karpathy Congrats Andrej!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:52 PM · May 19, 2026 · 1.1K Views

1) what

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:20 PM · May 19, 2026 · 1.6K Views

@karpathy Congrats Andrej!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:30 PM · May 19, 2026 · 20.9K Views

huge

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:29 PM · May 19, 2026 · 1.9K Views

woah 👀

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:31 PM · May 19, 2026 · 1.6K Views

@karpathy welcome!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:44 PM · May 19, 2026 · 68 Views

Welcome to the team! We’re so excited

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:22 PM · May 19, 2026 · 11.6K Views

WOW

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:22 PM · May 19, 2026 · 6.3K Views

WAT

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:37 PM · May 19, 2026 · 46.4K Views

wowza!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:13 PM · May 19, 2026 · 366 Views

Breaking: Anthropic attains sainthood, officially annointed by AI Jesus

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:29 PM · May 19, 2026 · 3K Views

How funny would it be if he fixed like three things that annoy him and quit

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
7:23 PM · May 19, 2026 · 41K Views

Holy smokes!!! Is it game over for the competitor? What is it about Anthropic that nobody leaves?

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:51 PM · May 19, 2026 · 1.6K Views

@karpathy @yuris woohoo! welcome to the team :)

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:31 PM · May 19, 2026 · 142 Views

woah

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:15 PM · May 19, 2026 · 21.1K Views
Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:24 PM · May 19, 2026 · 5.7K Views

@karpathy wow. congrats both.

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
4:49 PM · May 19, 2026 · 6.8K Views

@karpathy @blknoiz06 Oh shit, congrats

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:43 PM · May 19, 2026 · 7.3K Views

@karpathy Very excited to have you on the team. Welcome!

Andrej KarpathyAndrej Karpathy@karpathy

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

3:05 PM · May 19, 2026 · 21.4M Views
3:38 PM · May 19, 2026 · 4.9K Views
Andrej Karpathy joins Anthropic to conduct research and development on frontier large language models after prior roles at OpenAI and Tesla · Digg