Anthropic releases Claude Haiku 5.5 small model

Anthropic released Claude Haiku 5.5. Its OSWorld 2.1 score rose from 15.7% in the previous generation to 72.4%, average operating costs fell by about 75%, and the Haiku line gained adaptive reasoning and a 1-million-token context window for the first time.

Anthropic released Claude Haiku 5.5, the first Haiku-series update in about a year. Its pricing matches OpenAI's GPT-6 Luna. On the same day, Anthropic also cut prices for Sonnet 5.5 and its subscription plans.

Anthropic released Claude Haiku 5.5. Its official benchmark scores exceed GPT-6 Luna across the board, making it the new small-model gatekeeper, replacing DeepSeek V4.1 Flash and GLM-5.3-Flash.

Anthropic released the fast, low-cost Claude Haiku 5.5 at $0.10 per million input tokens and $0.50 per million output tokens, exactly matching GPT-6 Luna, released by OpenAI last month. Above 100,000 tokens, Haiku 5.5 rises to $0.50/$2.50, while Luna does not rise to $0.20/$0.75 until 272,000 tokens.

AWS announced that Claude Haiku 5.5 is available on Amazon Bedrock and Claude Platform on AWS.

Anthropic released Claude Haiku 5.5, its fastest and least expensive small model so far. Average prices are about 75% lower than Haiku 4.5; for prompts under 100,000 tokens, prices are up to 90% lower, while prompts above that threshold cost five times as much.

Anthropic released its latest model, Claude Haiku 5.5. According to a post by @claudeai cited in the source, it is the company's cheapest, fastest, and most capable small model so far, with average operating costs about 75% lower than Claude Haiku 4.5.