Anthropic

Claude Haiku 5.5

Generally Available

Anthropic's small Claude model released Oct. 7, 2026. The company called it its cheapest, fastest, and most capable small model. Priced at $0.10 input and $0.50 output per million tokens for prompts up to 100,000 tokens, and $0.50 / $2.50 above that. Available on AWS, Google Cloud, Azure, and the Claude Platform as claude-haiku-5-5.

Latest update Oct 8, 2026

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Current status

Shipped Oct. 7, 2026. Anthropic said average run cost is about 75% lower than Haiku 4.5. First Haiku-class model with an adjustable effort setting.

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Upcoming milestones1

Announced next steps from Anthropic that mention Claude Haiku 5.5.

  1. 2026

    Ship Claude Sonnet 5.5 and Claude Haiku 5.5

    TargetComing weeks after 2026-09-28

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In the news1

  1. Anthropic ships Claude Haiku 5.5 and cuts Sonnet cache price

    On Oct. 7, 2026 Anthropic released Claude Haiku 5.5, calling it its cheapest, fastest, and most capable small model, on AWS, Google Cloud, Microsoft Azure, and the Claude Platform as claude-haiku-5-5. Input is $0.10 per million tokens for prompts up to 100,000 tokens and $0.50 above that; output is $0.50 and $2.50. Anthropic said the model costs about 75% less to run than Haiku 4.5 on average. It also halved Sonnet 5.5 cache reads to $0.10 per million tokens and said Max and Team subscribers will receive monthly API credits this week.

    www.anthropic.com

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