sonnet-5

Anthropic has released Claude Sonnet 5, its new mid-tier model optimized for agentic tasks, priced at $2 per million input tokens through August 31 before rising to $3/1M. The model scores 63.2% on agentic coding benchmarks, approaching Opus 4.8's 69.2% performance at a significantly lower price point.

Anthropic has released Claude Sonnet 5, replacing Sonnet 4.6 as its medium-sized model. The company claims improved agentic performance approaching Opus 4.8 levels while maintaining lower pricing at $2 per million input tokens and $10 per million output tokens through August 31.