Anthropic Offers Mythos Upgrade for Cyber Partners and a ‘Safe’ Version for the Rest of You

Anthropic has released two new AI models, Claude Fable 5 and Claude Mythos 5, with the latter restricted to industry partners due to security concerns. The public-facing Fable 5 includes guardrails that reroute sensitive cybersecurity and biology queries to an older model.
Why it matters
This reflects the growing tension between AI capability advancement and the need for safety protocols to prevent the misuse of powerful generative models.
Photograph: Ludovic Marin/Getty Images Comment Loader Save Story Save this story Comment Loader Save Story Save this story Anthropic released two new AI models called Claude Fable 5 and Claude Mythos 5 on Tuesday, which the company says have greater capabilities than the Mythos Preview model it released in April to a limited set of tech industry partners. Anthropic has said the initial, limited release stemmed from concerns that the model’s capabilities could be exploited by bad actors to develop hacking tools that could catch defenders off guard.
The article objectively reports on corporate product strategy and safety measures without taking a side on AI regulation.
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