claude-sonnet-4-20250514

Anthropic's mid-tier powerhouse balancing elite reasoning speeds with a 200k context window for enterprise-grade automation.

Claude 4 Sonnet (version 20250514) hits the sweet spot between raw intelligence and operational efficiency. It delivers a 2x speed increase over the previous 3.5 iteration while maintaining a sub-second Time To First Token (TTFT). This model excels at complex data extraction, multi-step tool use, and high-accuracy coding tasks across 20+ programming languages. By leveraging a refined training set, it minimizes hallucinations in long-form document analysis (up to 500 pages) and provides the reliable performance required for autonomous agent workflows.

https://www.anthropic.com/news/claude-4-sonnet