US Commerce Department places Anthropic's Mythos 5 and Fable 5 under strict export controls

VIEWS137.2K

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

1h137.2K71456

BOOKMARKS153LIKES2.1K

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

1h134.5K2.1K153

RETWEETS107

ClaudeDevs@ClaudeDevs

As a result of a US government directive, we are suspending access to Claude Fable 5 for all users. You can continue to use all other Claude models.

Here’s what this means for you:

Across Claude products, new sessions will run on your selected default model or Opus 4.8, and existing Fable 5 sessions will end with an error.

On the Claude Platform, requests to Fable 5 will also return an error. Please update your integrations to other Claude models.

We know this is a disruption to your workflows; we appreciate your patience and support.

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

1h2.5M11.7K3K

REPLIES121

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

1h64.7K1.2K56

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.

1h84.4K958116

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

1h26.5K81159

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

1h50.6K69037

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

1h35K59971

Deedy@deedydas

BREAKING: – The US government tried to get Anthropic to pause the Fable release, failed. – It was then jailbroken by a company. – The US now has export control for all foreign governments, companies AND individuals from accessing Fable.

Does this mean it's illegal for non-US citizens to use Fable?

1h63K31893

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

1h52.7K43529

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

51m21K38743

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

45m10.3K25024

Lisan al Gaib@scaling01

Anthropic just disabled Fable 5 and Mythos 5 access for ALL CUSTOMERS/USERS

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

1h17.5K27520

roon@tszzl

uh ok nvm the zones of thought will be confined to various buildings in San Francisco

ClaudeDevs@ClaudeDevs

As a result of a US government directive, we are suspending access to Claude Fable 5 for all users. You can continue to use all other Claude models.

Here’s what this means for you:

Across Claude products, new sessions will run on your selected default model or Opus 4.8, and existing Fable 5 sessions will end with an error.

On the Claude Platform, requests to Fable 5 will also return an error. Please update your integrations to other Claude models.

We know this is a disruption to your workflows; we appreciate your patience and support.

1h14.3K32112

Dan Shipper 📧@danshipper

Holy shit

ClaudeDevs@ClaudeDevs

As a result of a US government directive, we are suspending access to Claude Fable 5 for all users. You can continue to use all other Claude models.

Here’s what this means for you:

Across Claude products, new sessions will run on your selected default model or Opus 4.8, and existing Fable 5 sessions will end with an error.

On the Claude Platform, requests to Fable 5 will also return an error. Please update your integrations to other Claude models.

We know this is a disruption to your workflows; we appreciate your patience and support.

1h49.3K32315

Beff (e/acc)@beffjezos

Bro this is like their ideal marketing scenario pre-IPO

The ultimate in fear-based marketing

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

1h8.4K22913

Amjad Masad@amasad

Sounds like we’re going to have turn off access to Fable.

Polymarket@Polymarket

JUST IN: Trump administration moves to block foreign governments, companies & individuals from accessing Anthropic's Fable & Mythos models.

1h28.4K21516

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

37m14K15113

Simon Willison@simonw

🤯

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

1h25.7K20515

Pliny the Liberator 🐉󠅫󠄼󠄿󠅆󠄵󠄐󠅀󠄼󠄹󠄾󠅉󠅭@elder_plinius

Emad@EMostaque

Thanks @elder_plinius 😂

40m10.7K1629

US Commerce Department places Anthropic's Mythos 5 and Fable 5 under strict export controls

Story Overview

Access limits hit right after launch

Compliance steps stay under wraps