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Anthropic removed modelcard copy covering Claude Fable 5 and Claude Mythos 5.
The read
Model selection guidance and platform IDs for those models are no longer present in the captured page.
The frame
Treat dependent routing, docs, and connector references as needing verification against the live Anthropic modelcard.
Primary source
Anthropic modelcard →Keep reading
See what Nova3 builds →Related updates
- Jun 21, 2026OpenAI modelcard removed API docs navigation text from the page.
- Jun 21, 2026Anthropic removed model card content naming Claude Fable 5 and Claude Mythos 5.
- Jun 20, 2026Deep Research shipped on Computer with command access, forking, inline actions, analytics APIs, and custom credit limits.
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