Anthropic releases new Claude Fable and Mythos 5.2 AI models

Updated 2026-11-10 · told from many outlets at once

Anthropic unveiled two new artificial intelligence models, Claude Fable 5.2 and Claude Mythos 5.2, on Monday. These new versions are more powerful and cheaper than previous models. Claude Fable 5.2 is 30 percent faster than its predecessors.

Anthropic unveiled two new artificial intelligence models, Claude Fable 5.2 and Claude Mythos 5.2.
Mythos 5.2 is available only to vetted organizations in cybersecurity or biomedical research.
Claude Fable 5.2 is 30 percent faster than previous versions.

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