Claude Opus 4
Anthropic's most powerful model — exceptional reasoning, coding, and nuanced analysis for the most complex tasks.
Anthropic's most powerful model — exceptional reasoning, coding, and nuanced analysis for the most complex tasks.
Claude Opus 4.6 is Anthropic’s most capable model, designed for complex tasks that require exceptional reasoning, deep analysis, and nuanced understanding. It’s the model professional developers and researchers reach for when accuracy and depth matter more than speed or cost.
Available through Claude Pro ($20/mo), Claude Max ($100/mo), and the Anthropic API ($15/million input tokens).
Capabilities: industry-leading reasoning benchmarks, exceptional long-form writing quality, strongest coding performance on complex multi-file tasks, superior analysis of legal documents and financial reports, and the most nuanced understanding of context of any publicly available model.
The 200,000 token context window enables processing entire legal contracts, codebases, or academic papers in a single session. Extended Thinking mode allows Opus to reason step-by-step through highly complex problems before responding.
Pros: Best reasoning and analysis quality, 200K context window, Extended Thinking for deep problems, best coding for complex tasks, extremely nuanced writing.
Cons: Most expensive Claude model, slower than Sonnet and Haiku, overkill for simple tasks, Pro plan has usage limits.
Best for: Senior developers tackling complex problems, legal professionals analysing contracts, researchers processing technical literature, and anyone who needs the absolute highest quality AI output.