Opus 5.5 spotted in Claude Code, Anthropic release imminent

kimmonismus · x · 2026-09-23

A user spotted Opus 5.5 already appearing in Claude Code, suggesting an imminent Anthropic release. Unconfirmed sighting, but the most direct signal yet of the new flagship model shipping soon.

Related event: Claude Opus 5.5 Spotted in Claude Code Ahead of Launch(3 posts)→

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