Introducing Claude Sonnet 5

Anthropic News

Anthropic released Claude Sonnet 5, a model designed to handle autonomous tasks like planning and tool use with performance approaching the more expensive Opus 4.8 model. Pricing is set at $2 per million input tokens and $10 per million output tokens through August 31, 2026, then increases to $3 and $15 respectively. The model becomes the default for Free and Pro users and is available across all Claude plans and platforms.