Checked fact 21630 Sep 2026Models and releases

Anthropic says that in its own testing Sonnet 5.5 costs up to 30 percent less per task than its predecessor.

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The exact words it rests on

In our testing, it costs up to 30% less per task than its predecessor.

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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“Anthropic says that in its own testing Sonnet 5.5 costs up to 30 percent less per task than its predecessor.” ai notis, checked 29 Sep 2026. Source: Claude Sonnet 5.5 (Anthropic). https://ainotis.com/c/216

As a reference (APA style)

ai notis. (2026, September 29). Anthropic says that in its own testing Sonnet 5.5 costs up to 30 percent less per task than its predecessor [Checked claim 216]. ai notis. https://ainotis.com/c/216

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