Anthropic releases Claude Haiku 5.5, its fastest and cheapest model

Anthropic has released Claude Haiku 5.5, which the author describes as its fastest and cheapest model to date. The source says it costs about 75% less to run than Claude Haiku 4.5 and is the first Haiku model with an adjustable effort setting.

The attached benchmark table reports Haiku 5.5 scores on tasks including computer use (OSWorld 2.1 offline subset, 72.4%) and Terminal-Bench 4.0 (39.2%), compared with Haiku 4.5 and other models.