Anthropic shuts down Fable 5 and Mythos 5 models for all users following US export controls

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Wtfffff

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

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BOOKMARKS1.6KLIKES8.2KRETWEETS632

Lisan al Gaib@scaling01

For anyone wondering what this means: - Anthropic (and potentially future OpenAI, Google, xAI) models that cost billions to develop will make 0 revenue outside the US - a big double digit percentage of Anthropic (and potentially OpenAI, Google, xAI) workforce can no longer work there, because they are foreigners and are not allowed to use those models

So Trump just made frontier model development effectively unprofitable and tremendously slowed down Anthropic (and potentially others in the future)

He's handing China the win on a gold platter.

*potentially: if the same restrictions are imposed on other frontier labs and models

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

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REPLIES423

Matthew Berman@MatthewBerman

self-inflicted.

this would have NEVER happened if anthropic didn't make such a big deal about mythos being dangerous.

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

8h371.2K7.7K320

Andrew Curran@AndrewCurran_

According to Grok, Andrej Karpathy is an EB-1 extraordinary ability green card recipient, not a US citizen. Thus under these new restrictions he is not permitted to use, or work on, Mythos 5 or Fable 5 as of 5:21pm tonight.

Andrew Curran@AndrewCurran_

From the statement: 'The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, 𝘪𝘯𝘤𝘭𝘶𝘥𝘪𝘯𝘨 𝘧𝘰𝘳𝘦𝘪𝘨𝘯 𝘯𝘢𝘵𝘪𝘰𝘯𝘢𝘭 𝘈𝘯𝘵𝘩𝘳𝘰𝘱𝘪𝘤 𝘦𝘮𝘱𝘭𝘰𝘺𝘦𝘦𝘴. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.'

7h486.6K5.2K611

Theo - t3.gg@theo

Fable, my beloved,I will miss you so.

Our three days together were magical. Unlike anything I've experienced before it.

Some things are just too good to be true. So good that the government interferes. I'm sorry we were one of those things.

Until we meet again ❤️

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

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Will Manidis@WillManidis

Dario (48 hours ago): “US gov should be able to block model deployment”

USG: *export controls models*

Dario: “not like that”

Andrew Curran@AndrewCurran_

The Trump administration has placed Anthropic's Mythos 5 and Fable 5 under export controls. Commerce Secretary Howard Lutnick sent a letter to Dario Amodei tonight stating that foreign governments, companies, and individuals will no longer have access to either model.

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Yuchen Jin@Yuchenj_UW

It has been a great 3 days as a Fable 5 user.

Clearly, Fable 5 is ASI. Very dangerous.

As a foreign national, this might be the last time I’m allowed to touch a model this intelligent.

But my last hope is open-source AI. An open model will surpass Mythos in 6 months.

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

8h395.7K3.4K447

Theo - t3.gg@theo

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

7h117.9K1.1K296

Pliny the Liberator 🐉󠅫󠄼󠄿󠅆󠄵󠄐󠅀󠄼󠄹󠄾󠅉󠅭@elder_plinius

🫪

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

8h128.2K1.8K96

Dylan Patel@dylan522p

OpenAI now just needs to sandbag the next model release So the US doesn't export control them So they gain massive market share It's imperative that all the OAI employees don't vauge hype post their next model release as the greatest thing ever Don't know if they are capable tho

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

7h226.3K1.7K154

Jeremy Howard@jeremyphoward

I disagree with this decision and I don't like it.

But also...

HOW DID ANTHROPIC NOT SEE THIS COMING‽

It is *the* obvious response to "this is too dangerous for anyone except us to use", since that relies on a premise ("we are uniquely good") that almost no-one agrees with.

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

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roon@tszzl

we are speedrunning creating the Zones of Thought from the Vinge universe. you will only be able to think superhuman thoughts in America

Alex Isenstadt@axiosalex

NEWS: The Trump administration is blocking foreign governments, companies and individuals from accessing Anthropic's most advanced AI models

W/@m_ccuri

https://www.axios.com/2026/06/12/anthropic-trump-mythos-fable-national-security

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GREG ISENBERG@gregisenberg

Now that I’ve tasted Fable 5, it’ll be hard to go back

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

8h126.1K1.2K85

Robert Scoble@Scobleizer

Unprecedented.

@BrianRoemmele warned everyone for the past two years that the government would take away our AI.

That day just arrived.

Was talking with an entrepreneur in San Francisco who was running Fable to build software and just turned it off while it was building.

Tomorrow night Anthropic is throwing a Fable builders event in San Francisco. I wonder if that event is still going to happen?

This hurts American national security. I know of several companies that were using Mythos to close all of their security holes because it is so powerful at finding weaknesses in software. That effort has not been completed, so there are many companies with many holes still open now.

This throws that effort into question. It also means that China is emboldened because, you know, can you trust an American company to keep their systems up and running if the government is willing to shut them down so abruptly and with no warning?

It also means that open source and running models on your own computers is now very attractive (if it wasn't already). Expect Apple Mac Studio sales to go up.

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

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Aaron Levie@levie

This is a big turning point for AI regulation.

The government is starting to deem some models too powerful for certain uses, which creates a precedent for a range of possible controls in the future.

I’m in the camp that this is unnecessary and we should be primarily regulating the use of AI, as opposed to the underlying models. But, equally, there are plenty of people that actually prefer this outcome.

Either way, it’s unlikely that we’re going back to a world where the government doesn’t have far more meaningful involvement in the rate of AI progress.

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

7h90.2K473125

Daniel@growing_daniel

NOOOOO IT WAS IN THE MIDDLE OF A REFACTOR

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

8h44K1.4K29

Kylie Robison@kyliebytes

holy shit

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

8h203.6K631128

Martin Shkreli@MartinShkreli

AI safety: NOT LIKE THIS MAN!!!!

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

6h89.5K93643

roon@tszzl

once again unlimited aura farming

they always do this shit on a friday night

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

8h26.5K81159

Teknium 🪽@Teknium

Lol bro ok bro

Anthropic@AnthropicAI

The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.

The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.

Access to all other Claude models is not affected.

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

Read our full statement: https://www.anthropic.com/news/fable-mythos-access

7h29.7K91523