Claude Sonnet 5 is Anthropic’s latest Sonnet-class model, now available in GitHub Copilot. It brings strong coding performance to everyday development and agentic workflows, giving developers a new Sonnet-class option…

Claude Sonnet 5 is the most agentic Sonnet model yet, rivaling Opus 4.8 in performance at lower prices, Anthropic said.

Anthropic's Claude Sonnet 5 is available on GitLab Duo Agent Platform. It's the first model to complete every task in our evaluation suite, delivering higher quality.