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Anthropic removed model overview text naming Claude Fable 5 and Claude Mythos 5
The read
Any agent using those modelcard IDs should verify current docs before routing Anthropic work.
The frame
The deletion includes Claude API IDs, Bedrock IDs, Vertex AI IDs, and limited availability notes.
Primary source
Anthropic modelcard →Keep reading
See what Nova3 builds →Related updates
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- Jul 25, 2026Enterprise and Edu users can find skills under Plugins, on the Skills tab in the Plugin Directory.
- Jul 25, 2026Anthropic removed modelcard language for Claude Fable 5 and Claude Mythos 5.
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