Checked fact 2122 Sep 2026Models and releases

The model id for Claude Opus 5.5 is claude-opus-5-5

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The exact words it rests on

Model ID: claude-opus-5-5

What the source said when we opened it, on 22 Sep 2026.

https://platform.claude.com/docs/en/models/opus-5-5/overview

Checked by the notis newsroom on 22 Sep 2026, against the source above.

Short permanent address

In a sentence

“The model id for Claude Opus 5.5 is claude-opus-5-5.” ai notis, checked 22 Sep 2026. https://ainotis.com/c/21

As a reference (APA style)

ai notis. (2026, September 22). The model id for Claude Opus 5.5 is claude-opus-5-5 [Checked claim 21]. ai notis. https://ainotis.com/c/21

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