Models
Claude Mythos 5.2
Same underlying model as Fable 5.2 but with fewer safety restrictions, aimed at researchers in cybersecurity and biomedicine.
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- Anthropic upgrades Claude Fable and Mythos to version 5.2 with faster speeds and lower prices“Claude Fable 5.2 and Claude Mythos 5.2 are upgrades to Anthropic's top-tier technical models, both now generating output up to 30 percent faster than their previous version, Claude Fable 5.1 and Claude Mythos 5.1.”
- New AI models Claude Fable 5.2 and Mythos 5.2 are now easier to use on the command line“Anthropic, the company behind Claude, released Claude Fable 5.2 and Claude Mythos 5.2 on November 9, 2026.”