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← Back to all updatesPublished ·Anthropic◆ Critical
Anthropic model card no longer lists Claude Fable 5 and Claude Mythos 5.
The read
Operators lose an official reference for model selection, availability, channels, and Project Glasswing access language.
The frame
The removed text stated Fable 5 was generally available June 9, 2026, while Mythos 5 was limited availability through Project Glasswing.
Primary source
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