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← Back to all updatesPublished ·Anthropic◆ Critical
Anthropic removed Claude Fable 5 and Mythos 5 model guidance from the model card
The read
Builders lose official routing, availability, and access details for those Claude 5 model entries on this page
The frame
The removed text named Claude Fable 5 as Anthropic's most capable widely released model and tied Mythos 5 to Project Glasswing.
Primary source
Anthropic modelcard →Keep reading
See what Nova3 builds →Related updates
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