Checked fact 156015 Oct 2026Safety and security

Anthropic says Claude Opus 5.5, Sonnet 5.5 and Haiku 5.5 are its most evenhanded models, scoring 99% on its political evenhandedness evaluation.

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The exact words it rests on

Claude Opus 5.5, Sonnet 5.5, and Haiku 5.5 are our most evenhanded to date, scoring 99% on our political evenhandedness evaluation.

What the source said when we opened it, on 15 Oct 2026.

The source

Preparing for the 2026 US midterms
Anthropic · 2026-10-14

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Checked by the notis newsroom on 15 Oct 2026, against the source above.

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99% · Claude Opus 5.5, benchmark score (Anthropic political evenhandedness evaluation)
99% · Claude Sonnet 5.5, benchmark score (Anthropic political evenhandedness evaluation)
99% · Claude Haiku 5.5, benchmark score (Anthropic political evenhandedness evaluation)

In the story

Anthropic sets out its safeguards for the 2026 US midterms 15 Oct 2026

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“Anthropic says Claude Opus 5.5, Sonnet 5.5 and Haiku 5.5 are its most evenhanded models, scoring 99% on its political evenhandedness evaluation.” ai notis, checked 15 Oct 2026. Source: Preparing for the 2026 US midterms (Anthropic). https://ainotis.com/c/1560

As a reference (APA style)

ai notis. (2026, October 15). Anthropic says Claude Opus 5.5, Sonnet 5.5 and Haiku 5.5 are its most evenhanded models, scoring 99% on its political evenhandedness evaluation [Checked claim 1560]. ai notis. https://ainotis.com/c/1560

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