Anthropic lists Claude Fable 5 and Claude Mythos 5 on its model overview.

Builders get Claude API IDs and availability notes for widely released and Project Glasswing models.

Fable 5 is positioned above Opus 4.8 for highest available capability. Mythos 5 is listed under Project Glasswing.

• Jun 16, 2026OpenAI modelcard removed API docs navigation text from the captured page.
• Jun 15, 2026OpenAI pricing page removed published GPT-5.5, GPT-5.4, mini, and Realtime rates
• Jun 15, 2026Google's Gemini Developer API pricing page changed; the added line is not visible.

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