Releases
2 matching — model launches, API releases, product updates, financial events and news.
September 20262
Sep 1, 2026
Claude Fable 5.1 releasedModel release
Anthropic released Claude Fable 5.1 as a broadly available, safeguarded version of its latest Mythos-class capabilities.
Sep 1, 2026
Claude Mythos 5.1 released to vetted organizationsModel release
Anthropic released Claude Mythos 5.1 to vetted cyberdefenders and life-sciences organizations through trusted-access programs.

