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Anthropic

7 October 2026

Claude Haiku 5.5

Context: —Input: $0.1 / 1MOutput: $0.5 / 1M
What's new
  • Priced at $0.10 per million input tokens and $0.50 per million output tokens up to 100,000 tokens; above that threshold, prices increase to $0.50 and $2.50.
  • Uses a less generous tokenizer than Haiku 4.5.
  • Does not allow reasoning to be disabled and defaults to medium reasoning effort.
Simon Willison's Weblog

A blog and notes on development. The easiest way to reach me is via the social links below.

Contacts
talalaev.misha@gmail.com
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