Claude Opus 4.1
by Anthropic
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains in multi-file code refactoring, debugging precision, and detail-oriented reasoning. The model supports extended thinking up to 64K tokens and is optimized for tasks involving research, data analysis, and tool-assisted reasoning.
Specifications
Technical details and pricing.
Benchmarks
7 benchmark scores from Artificial Analysis.
Composite Indices
Intelligence, Coding, Math
Standard Benchmarks
Academic and industry benchmarks
Frequently Asked Questions
What is Claude Opus 4.1 good for?
Use Claude Opus 4.1 for everyday tasks like writing, summarizing, brainstorming, and getting clear explanations.
How much does Claude Opus 4.1 cost?
Pricing is based on usage. Current rates are $5.00/1M tokens for input and $25.00/1M tokens for output.
Can I try Claude Opus 4.1 for free?
Yes. You can start a chat instantly and test the model before deciding on a plan.
Does Claude Opus 4.1 support images or audio?
Claude Opus 4.1 can understand images.
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Benchmarks and pricing are sourced from Artificial Analysis where available. OpenRouter specs are used as a fallback.