Claude Opus 5 Overview

Claude Opus 5 is Anthropic's high-capability model for complex agentic coding, deep reasoning, long-running tool use, and enterprise knowledge work. It combines a 1M-token context window with vision, configurable effort levels, and reasoning enabled by default, allowing teams to balance latency and cost against capability. It is particularly suited to large codebases, multi-step research and analysis, document-heavy workflows, and agent systems that need sustained, reliable execution.