Anthropic releases Sonnet 5.5, which it says is faster and cheaper

Anthropic has released Sonnet 5.5, its mid-range model for coding and creating documents, presentations, and spreadsheets. The company says it is more than 30% faster than Sonnet 5 and uses significantly fewer tokens, which can reduce the cost per task by up to 30%, although the API price has not changed. The model costs $2 per million input tokens and $10 per million output tokens, according to Tecnoblog, and is commercially available with integrations for AWS, Google Cloud, and Microsoft Azure, as well as a zero-data-retention option.

According to Tecnoblog, Anthropic reported scores of 70.6% on Terminal-Bench 4.0 and 80.1% on OSWorld 2.1, above Sonnet 5’s results in those tests. The company also says the model has cyber capabilities comparable to Opus 5 and therefore receives stronger safeguards, including mechanisms to fall back to Sonnet 5 for higher-risk cyber requests. Anthropic plans to release Haiku 5.5 in the coming weeks.