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US Export Controls Force Anthropic to Suspend Fable 5, Mythos 5 as EU Reviews Fallout

aiai-governanceai-policy-regulationai-legal-safety 310 posts · 143 accounts

Anthropic suspended Fable 5 and Mythos 5 after the US government directed the company to limit foreign-national access to the models on national-security grounds. Politico reported that Amazon CEO Andy Jassy was among tech leaders who warned the White House that Fable’s guardrails could be bypassed, leading to three calls with Chief Executive Officer Dario Amodei before export controls were imposed. The White House has described the curbs as a last resort after hours of pressing Anthropic to pull the models, while Anthropic says it got a 90-minute deadline and no details on the threat.

Reuters reported that the European Commission is examining the practical consequences of the move, extending the dispute beyond Washington and Silicon Valley. The episode has also prompted calls, including from Representative Ro Khanna, for an independent AI-safety agency, while critics argue the US is making decisions on frontier AI without clear rules or public transparency.

From the sources (25 posts)

@tradfi

*ANTHROPIC FACES EXPORT CONTROLS BLOCKING FOREIGN ACCESS TO ADVANCED MYTHOS 5, FABLE 5 MODELS *ANTHROPIC FACES POTENTIAL FINANCIAL AND CIVIL PENALTIES FOR FAILURE TO COMPLY WITH NEW MANDATES

@financialjuice

Trump administration blocks overseas access to Anthropic's leading AI - Axios

@financialjuice

Trump administration blocks foreign access to Anthropic’s most powerful AI: Axios

@axios

Scoop: Trump admin blocks foreign access to Anthropic's most powerful AI

@phildstewart

TRUMP ADMIN BLOCKS FOREIGN ACCESS TO ANTHROPIC'S MOST POWERFUL AI - AXIOS

@techmeme

Source: Howard Lutnick told Anthropic that Mythos 5 and Fable 5 would be subject to export controls after a company claimed it was able to jailbreak Mythos (Axios) (Visit Techmeme dot com for the link and full context!)

@polymarket

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

@mtslive

SITUATION DETECTED: The Trump administration is placing export controls on Anthropic’s Mythos and Fable 5 models, blocking foreign governments, companies, and individuals from access, per Axios.

@deanwball

If this is true, it is just baffling. An administration whose posture is that we *should* export advanced AI chips to China, which also wants to ban… Britain (and every other non-American on Earth)… from using our best models? I have no wor

@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

@andrewcurran_

This allegedly was triggered by a successful jailbreak of Mythos by an unnamed group who reported it to the government. We will hopefully get details soon.

@apples_jimmy

“ and to all foreign persons within the country “ ?? Do ants own staff not get to work on this / not use it personally now lol

@deanwball

If implemented as this reporting suggests, Anthropic’s latest models would be subject to export controls to all *non-Americans,* including non-American nationals based in the US. This means you should expect to have to prove your citizenshi

@tszzl

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

@deredleritt3r

Anthropic gets what it wanted.

@deanwball

I can’t tell if this is lawfare against Anthropic in particular or extreme national-security hawkery. Regardless, it is simply cartoonish.

@andrewcurran_

Apparently the administration asked Anthropic to not release Mythos 5 or Fable 5 at all, and this is a reaction to them doing it anyway.

@deredleritt3r

No third-party assessment necessary here - according to Axios, this was prompted by "another company [that] claimed it was able to jailbreak Mythos, alarming the administration about possible national security risks". "The model needs to r

@axios

RT @m_ccuri: Scoop: Anthropic is now facing export controls for its most advanced models. It will need a license to export to any locatio…

@axios

RT @axiosalex: NEWS: The Trump administration is blocking foreign governments, companies and individuals from accessing Anthropic's most ad…

@zooko

RT @WillManidis: Dario (48 hours ago): “US gov should be able to block model deployment” USG: *export controls models* Dario: “not like t…

@tradfi

*ANTHROPIC TO DISABLE FABLE 5 AND MYTHOS 5 FOR ALL CUSTOMERS FOLLOWING US GOVT EXPORT DIRECTIVE: BLOG

@financialjuice

Anthropic: net impact of order requires immediate shutdown of Fable 5 and Mythos 5 for all clients to guarantee compliance

@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 A

@financialjuice

Anthropic: received directive from U.S. government at 5:21pm, letter lacks specific national security details

Preview built on a synthetic news corpus (16 weeks, Apr–Jul 2026). Impact calls are model reads, not price data.

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