Anthropic launches Claude Haiku 5.5 with 75% lower average costs

Anthropic launched Claude Haiku 5.5, a small AI model designed for fast, high volume workloads that the company says costs roughly 75% less to run on average than Haiku 4.5. The company describes Haiku 5.5 as its fastest model to date and its most capable small model. It targets tasks such as summarization, database queries, classification, live customer support and browser use. For prompts of up to 100,000 tokens, Haiku 5.5 costs $0.10 per million input tokens and $0.50 per million output tokens. That compares with $1 and $5, respectively, for Haiku 4.5. For prompts above that threshold, pricing rises to $0.50 per million input tokens and $2.50 per million output tokens. Anthropic said roughly 90% of requests to its previous Haiku model fell within the lower pricing tier. Haiku 5.5 is also the first model in the Haiku family with an adjustable effort setting, allowing users to balance cost against reasoning capability. Anthropic’s evaluations showed substantial improvements over Haiku 4.5. On the offline subset of OSWorld 2.1, which tests computer operation, Haiku 5.5 scored 72.4%, compared with 15.7% for its predecessor. On Terminal Bench 4.0, an agentic coding evaluation, it sco...