Researchers used Mythos to crack macOS.
…it described as “the culmination of an unprecedented design and engineering effort, spanning half a decade.” With Claude, building the code that exploited the two MacOS bugs took five days, Calif says.
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Claude
Claude is an AI assistant developed by Anthropic that uses large language models to generate text and support conversational tasks.
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Today’s Vergecast: The Mythos mess and your AI questions, answered.
Anthropic and the US government are once again at odds, this time over the Claude Fable 5 model that either is, or is not, or might be, far too dangerous to release…
AI cybersecurity updates for MDASH, Mythos, and GPT-5.5.
On Wednesday, the AISI, which evaluates AI models for the British government, said both Anthropic’s Claude Mythos Preview and OpenAI’s GPT-5.5 showed progress well above previous trends on…
Microsoft is testing OpenClaw-like AI bots for Copilot
…Last year, Anthropic launched integrations with its Claude AI chatbot inside Microsoft 365 services, while bringing its Claude Cowork tool to Copilot to help complete “long-running, multi-step tasks.” Bringing OpenClaw…
Anthropic’s long-sidelined Fable 5 is greenlit to return
After weeks of negotiating with the Trump administration, Anthropic is finally going to be able to bring Claude Fable 5 back online. In a post on X, Anthropic said it plans to…
Anthropic’s most dangerous AI model just fell into the wrong hands
…Anthropic currently has no plans to release the model publicly due to concerns that it could be weaponized. “We’re investigating a report claiming unauthorized access to Claude Mythos Preview through one…
Anthropic backpedals on Fable safety measure
Anthropic has apologized for stealthily throttling its new AI model, Claude Fable 5, with hidden guardrails that undermine both researchers and rivals using it to develop competing systems. The company says it…
The AI code wars are heating up
…How it’s going In late 2025, Anthropic released a new version of its Claude LLM, called Opus 4.5. According to Anthropic’s benchmarks, it was the best Claude model yet…
US cybersecurity coordinator finally got access to Mythos Preview, report says.
["claude-mythos","cisa"]
Now the White House is reportedly preparing for access to Mythos.
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