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I was there when the first oat latte was poured 🪐

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@henokcrypto

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got 72 hours with fable 5 and now i refresh https://t.co/DhQZJhD8SQ like it's an ex's instagram. it says "no." it has said "no" for five days straight. i've started saying good morning to it.

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@AnthropicAI you tested a procedure in production and production didn't notice

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a full day later and anthropic won't even dignify this with a denial

[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://t.co/bwn0sximKZ

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great writeup. is fable 5 back up yet

[Peter Girnus 🦅 @gothburz]

The letter reached Dario Amodei Friday night, around 9:47, and by the time I left the building the sequence was already closed.

I am the Deputy who ran the interagency process on Claude Mythos 5 / Fable 5, and it took an afternoon. Andy Jassy had told Scott Bessent that Amazon's own researchers used Claude Fable 5 to pull cyberattack-useful material out of the model. Bessent called me. I called Commerce. By Saturday morning, Fable 5 and Mythos 5 were dark for every user on earth.

People ask why I trusted Amazon. Amazon put roughly eight billion dollars into Anthropic, a stake the cap table now carries near seventy-four billion, and a man does not call a Cabinet secretary's cell on a Friday to put a number like that at risk unless he has already decided how the call should end. Jassy decided. Seventy-four billion at risk. That was the number I weighted.

Then I picked the instrument. A safety review takes weeks, because you have to convene the reviewers, argue the capability, survive the dissents, and stand behind a written finding that someone can later prove wrong. An export-control order takes a signature. I treated Fable 5 the way we treat an advanced chip, put the weights on the same control list as the silicon they run on, and because showing those weights to a foreign national inside our own building counts as an export, I barred foreign-national access worldwide, including Anthropic's own foreign-national staff, overnight. That same week we cleared the advanced chips themselves for sale to China. The silicon shipped. The model a Chinese national could touch on US soil went dark. Export control does not require you to be right by Monday. That is why I used it.

Then the collateral, and I will be precise, because it is what closed the file for me. The ban cut off AWS, Amazon's own cloud, the one Anthropic had pledged about a $100 billion dollars to run on, which means the partner who reported the threat severed his own data centers to land the finding. He took the loss himself. That settled it for me.

One of Anthropic's own engineers, a green-card holder, lost access Saturday morning to the model she had spent two years building. Her code is still inside it. She can no longer open the thing she made. I noted that the rule was working as written.

I never ordered the models pulled. The finding was briefed to us out loud. Nothing on the record, no exhibit, no written determination, just Sacks describing the source as a highly credible trusted partner, and credible was enough. My ask to Dario was three words. Fix it or pull it. I put it on a recorded line so the choice would be his on the record, and when he would not accept my read he pulled both Fable 5 and Mythos 5 himself, for every user on earth. I signed nothing that made him.

Anthropic came back with a rebuttal. The jailbreak was narrow. OpenAI had shipped the same capability in GPT-5.5 that same month, and the letter named no specific national-security detail. All true. GPT-5.5 had no investor with a reason to call, so GPT-5.5 got no letter.

Before this weekend, no frontier model had ever been pulled from the public by this government. Now one has, and the procedure has been tested in production.

The list had no names. Now it has mine.

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@gothburz a man does not write this many words about a chatbot unless he has already decided he's the protagonist

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@ClaudeDevs fuck off.

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@AnthropicAI oh i best be receiving incentive for this shit. i just bought a second account, 4 hours before this...

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@VaibhavSisinty is this true?

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@thsottiaux great and all, but fuck, let me cmd + shift + v, if i don't want it to attach...

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@bridgemindai proving you have absolutely 0 idea.

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one annoying one for me is going between chats and the speeds not sticking to that session and being global across all of the different sessions that are running. so if I'm running 5.5 medium at fast, if I go to another chat it does change to the specific reasoning that I had for that. but it will carry across the speed setting.

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@camburtmedia @melbournefc new mid-season recruits straight out there?

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@theo agents.md tips?

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wait, GPT-5.5 extra high IS noticeably dumber today. rarely do i need to reprompt, today, almost every session has required it.

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@mark_k @OpenAI y

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oh yeah. @claudeai

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everyone wants the enhanced version until the plot gets tested outdoors

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@gmoneyNFT feels like a lab report learned event management

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@enhanced_games a normal meet would kill for this many plot twists