Claude Fable 5.1 and Claude Mythos 5.1
By denysvitali · 2026-09-01 · 601 points · 569 comments
https://www.anthropic.com/claude-fable-and-mythos-5-1
What's new in Claude Fable 5.1 – https://platform.claude.com/docs/en/models/fable-5-1/whats-n... System Card: https://www-cdn.anthropic.com/0339e6a7c5c7b87f5c07798616dc32...
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