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

This story is from 2026-10-07. It is preserved in the archive; the latest stories are on the live feed.

Claude Haiku 5.5 is 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. Haiku 5.5 is designed for high-volume, cost-sensitive tasks. It reliably handles quick, repetitive work like summaries and classification,…

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Timeline · 2 reports

  1. 2026-10-07 18:27 · Unite.AI
    Anthropic Releases Claude Haiku 5.5, Cutting Small-Model API Prices
  2. 2026-10-07 18:01 · r/ClaudeAI
    Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released

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  2. I trust Anthropic with my data. I didn't agree to share it with Meta, TikTok and Google. (IMDEA study) — r/ClaudeAI
  3. OpenAI will watermark ChatGPT outputs by default—but only in the EU — Ars Technica AI
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