Claude on X: “Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable …”

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Claude on X: “Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable …” | PeekX

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Claude

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Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released.

On average, it costs around 75% less to run than Claude Haiku 4.5.

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Oct 7, 2026, 6:01 PM UTC

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