Checked fact 21430 Sep 2026Models and releases

The API model name is claude-sonnet-5-5. Quote: "claude-sonnet-5-5"

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The exact words it rests on

Developers can get started on the Claude Platform with claude-sonnet-5-5.

What the source said when we opened it, on 29 Sep 2026.

The source

Claude Sonnet 5.5
Anthropic · 2026-09-28

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Checked

Checked by the notis newsroom on 29 Sep 2026, against the source above.

In the story

Anthropic releases Claude Sonnet 5.5, which it says is faster than Sonnet 5 30 Sep 2026

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In a sentence

“The API model name is claude-sonnet-5-5. Quote: "claude-sonnet-5-5".” ai notis, checked 29 Sep 2026. Source: Claude Sonnet 5.5 (Anthropic). https://ainotis.com/c/214

As a reference (APA style)

ai notis. (2026, September 29). The API model name is claude-sonnet-5-5. Quote: "claude-sonnet-5-5" [Checked claim 214]. ai notis. https://ainotis.com/c/214

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