AI model · Anthropic
Claude Opus 4.1
Model ID: anthropic/claude-opus-4.1
- Input
- $15 per 1M tokens
- Output
- $75 per 1M tokens
- Context
- 200K tokens at once
- Max output
- 32K tokens per reply
- Released
- 5 Aug 2025 Anthropic
What it can do
- YesReasoning
- YesTool calling
- YesImage input
- NoOpen weights
- NoFree to use
Takes image, text, file; gives text.
How its listing describes it
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...
Sources
- Anthropic: Claude Opus 4.1 on OpenRouter — read 2 Oct 2026