Big news: Anthropic has a new version of a Mythos-class model coming later today called Claude Fable, according to a person with knowledge of the release. It’s a neutered version of Mythos with safeguards to protect against its misuse either in cybersecurity hacks or the construction of ...

Anthropic launches Mythos with Fable 5. Six capabilities for agents: 80.3% code reasoning, extended thinking, autonomy. Vision, science acceleration, enterprise pricing

Anthropic plans to release its advanced Claude Mythos AI model soon, following the public release of its Claude Opus 4.8 model.