Why it matters

Anthropic releases cheaper, faster Claude Sonnet 5.5

The Decoder · Anthropic's Claude Sonnet 5.5 nearly matches Opus 5.5 on benchmarks while costing up to 30 percent less per task

Anthropic released Claude Sonnet 5.5, which nearly matches its flagship Opus 5.5 on benchmarks while costing up to 30% less per task.