… The model is called claude-mythos-1-preview, and it also briefly appeared in the public version of Claude Security. This confirms that Anthropic is preparing the model for public rollout, but it's unclear whether it'll be available across all subscription tiers. …
Anthropic confirms Claude Mythos-class models will roll out to the public By Mayank Parmar May 28, 2026 08:21 PM Anthropic has confirmed that it plans to bring Mythos-class models to the general public after delaying the rollout due to security risks to public and private software. …
Several US federal agencies are taking up Anthropic’s new cybersecurity model to find vulnerabilities, but one is reportedly not getting in on the action: the nation’s central cybersecurity coordinator. …
Anthropic’s tightly controlled rollout of Claude Mythos has taken an awkward turn. After spending weeks insisting the AI model is so capable at cybersecurity that it is too dangerous to release publicly, it appears the model fell into the wrong hands anyway. …
… Anthropic's less risky AI model Lastly, Anthropic's Opus 4.7 is, let's say, a more accessible and friendly version of AI than Mythos . Mythos is a highly advanced AI model that the company says is so potentially dangerous to cybersecurity that it has been kept from public release so far. …
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… The concern is palpable across the industry, and improvements to models — along with improved understanding of their capabilities — are happening at lightning speed. Open-weight models, or models whose trained parameters also known as weights are publicly available, also pose risk. …
… We've additionally added guidance to our CLAUDE.md to ensure model-specific changes are gated to the specific model they're targeting. For any change that could trade off against intelligence, we'll add soak periods, a broader eval suite, and gradual rollouts so we catch issues earlier. …
… Anthropic’s Mythos rollout has missed America’s cybersecurity agency Lauren Feiner Apr 22 Anthropic’s most dangerous AI model just fell into the wrong hands Jess Weatherbed Apr 22 Terrence O'Brien Apr 19 The NSA reportedly has access to Anthropic’s Mythos despite being labeled a supply-chain risk. …
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