Anthropic: Claude Opus 4.1

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.

• Context window: 200,000 tokens
• Input: image, text, file
• Output: text
• Pricing: $15/M input tokens, $75/M output tokens

View on OpenRouter. Model data sourced from OpenRouter.