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← Back to all updatesPublished ·Anthropic◆ Critical
Anthropic removed Models overview content describing Claude Fable 5 and Mythos 5.
The read
Model selection and availability references for Fable 5 and Mythos 5 are no longer visible in the tracked page body.
The frame
The removed copy stated Fable 5 was generally available June 9, 2026, and Mythos 5 was limited availability.
Primary source
Anthropic modelcard →Keep reading
See what Nova3 builds →Related updates
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