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LiveUpdated 2026-09-22 18:12 UTC

BREAKING: Anthropic releases Claude Opus 5.5, its first release since they started…

BREAKING: Anthropic releases Claude Opus 5.5, its first release since they started “pacing development.” Opus 5.5…

This is a AI post classified by Jev as Frontier models (a model release), kept by the AI Radar because it carries real work, not commentary.

BREAKING: Anthropic releases Claude Opus 5.5, its first release since they started “pacing development.” Opus 5.5 performs better than Fable 5.1, while being 40% cheaper.

Posted by Exec Sum (69.3k followers) 1 h ago · 16 likes · 1.7k views · view the original post on X. Kept by the AI Radar as Frontier models.

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