It says the model can use browsers, plan, code and do knowledge work while posing fewer risks than Mythos and Fable.

Claude Sonnet 5 brings near-Opus 4.8 agentic performance at a mid-tier price, from $2/$10 per million tokens until August 31. Here's what is new.

Anthropic's Claude Sonnet 5, codenamed Fennec, is reportedly being prepared for release on OpenRouter after months of delays and speculation.