Anthropic
Claude Sonnet 5.5
Claude Sonnet 5.5 is a next-generation AI model designed for advanced reasoning, coding, analysis, and complex agentic workflows. It delivers strong performance across software development, long-context understanding, multimodal tasks, and professional knowledge work, offering a balanced combination of intelligence, speed, and efficiency. With enhanced reasoning capabilities and improved instruction following, Claude Sonnet 5.5 excels at writing and debugging code, analyzing complex documents, solving multi-step problems, and powering AI agents that require reliable decision-making and tool usage.
Total Context
1M
Max Output
128K
Released
Sep 28, 2026




