Claude Sonnet 4
anthropic/claude-4-sonnet-20250522
Usage data date 2026-07-26 · updated daily
Usage and specs
What is Claude Sonnet 4
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%), Sonnet 4 balances capability and computational efficiency, making it suitable for a broad range of applications from routine coding tasks to complex software development projects. Key enhancements include improved autonomous codebase navigation, reduced error rates in agent-driven workflows, and increased reliability in following intricate instructions. Sonnet 4 is optimized for practical everyday use, providing advanced reasoning capabilities while maintaining efficiency and responsiveness in diverse internal and external scenarios. Read more at the [blog post here](https://www.anthropic.com/news/claude-4)
Claude Sonnet 4 capabilities
Input: Image、Text、File Output: Text
Claude Sonnet 4 API pricing
USD list-price snapshot, not independently verified; confirm current pricing and terms on the provider site before purchase.