Anthropic model card added Claude Fable 5 and Claude Mythos 5 IDs.

Model routing and connector maps need new Fable and Mythos identifiers, with Mythos tied to Project Glasswing access.

Fable 5 is listed as most capable widely released. Mythos 5 is Project Glasswing successor to Mythos Preview.

• Jun 17, 2026OpenAI model card page removed its visible docs navigation content.
• Jun 16, 2026OpenAI modelcard removed API docs navigation text from the captured page.
• Jun 16, 2026Anthropic lists Claude Fable 5 and Claude Mythos 5 on its model overview.

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