Artificial Analysis on X: “Anthropic has released Claude Haiku 5.5, scoring 43 on the Artificial …”

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Anthropic has released Claude Haiku 5.5, scoring 43 on the Artificial Analysis Intelligence Index - up 26 points one year after the last Haiku release

Haiku 5.5 is the first Haiku model with Anthropic’s effort settings and adaptive thinking, and Anthropic has introduced tiered

Oct 7, 2026, 7:12 PM UTC

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Artificial Analysis on X: “Anthropic has released Claude Haiku 5.5, scoring 43 on the Artificial …” | PeekX