Anthropic launches Claude Haiku 5.5, cutting running costs by about 75%

Anthropic has released Claude Haiku 5.5, calling it the fastest, cheapest and most capable small model in the Haiku lineup. On average, it costs about 75% less to run than Haiku 4.5.

For requests up to 100,000 tokens, input costs $0.10 per million tokens and output costs $0.50. Above that level, prices are $0.50 and $2.50. Anthropic also cut Sonnet 5.5 cache read pricing from $0.20 to $0.10, lowering most agent task costs by about 20%.

In tests, Haiku 5.5 scored 1620 on the GDPval-AA v2.1 knowledge work benchmark and 72.4% on the OSWorld 2.1 offline subset. It is the first Haiku model with adjustable performance settings, letting users balance cost and intelligence. It also serves as a sub-agent for Opus 5.5 and Sonnet 5.5 on coding tasks.