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Claude Haiku 5.5 vs. Haiku 4.5 vs. Sonnet 5.5: Which Anthropic Model Should You Choose?

This story is from 2026-10-08. It is preserved in the archive; the latest stories are on the live feed.

As generative AI development accelerates, model tiers have evolved rapidly. Anthropic’s lineup provides distinct options designed to balance intelligence, speed, and cost: Claude Haiku 4.5 , Claude Haiku 5.5 , and Claude Sonnet 5.5 . Choosing the right model depends on your application requirements…

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  1. 2026-10-08 14:00 · DEV Community — AI
    Claude Haiku 5.5 vs. Haiku 4.5 vs. Sonnet 5.5: Which Anthropic Model Should You Choose?

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