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Statement on US government directive to suspend access to Fable 5 and Mythos 5

anthropic.com

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Re: Statement on US government directive to suspend access to Fable 5 and Mythos 5

#101
post #54

Anyone lost access yet? Fable is still working for me on https://claude.ai/ and in Claude Code. UPDATE: I lost access at 6:59pm pacific.

Still works for me but I don't know if it's gaslighting me or not... fool me once situation here...

Re: Statement on US government directive to suspend access to Fable 5 and Mythos 5

#103

Interesting to see Anthropic now downplaying the new vulnerabilities that Mythos discovered: > We reviewed a demonstration of this specific technique being used to identify a small number of previously known, minor vulnerabilities. These vulnerabilities all appear relatively simple, and we have found that other publicly-available models are able to discover them as well without requiring a bypass

I think what they're saying is that this prompt/jailbreak only lets Mythos discover some really easy vulnerabilities that it probably fixes from a simple "Find and fix bugs in this code" and that this can be easily done by other models like GPT-5.5. Which is very different from targeted security research.

Re: Statement on US government directive to suspend access to Fable 5 and Mythos 5

#105

So isn’t the only logical conclusion that we have reached the max of model capabilities that the US allows to be made available to the public? Why invest in smarter models with this precedent? And potentially more importantly: if a model like Mythos, which at best is an incremental improvement over Opus, is getting this treatment, how are all the AI investments that are based on the expectation of ASI / AGI / signifi…

I predict in future the best frontier models will be gatekept solely to the wealthy.
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