Anthropic Claude Sonnet 5 vs Sonnet 4.6 vs Opus 4.8: Agentic Coding Benchmarks, API Pricing, and Cost-Performance Tradeoffs Compared

Anthropic has released Claude Sonnet 5, which achieves coding performance benchmarks approaching those of the more expensive Opus 4.8 model. By offering high-level agentic capabilities at the lower pricing tier typically reserved for Sonnet models, the update provides developers with a more cost-efficient option for complex programming tasks.