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, debu…
Model details →Anthropic: Claude Opus 4.1 vs OpenAI: o1-pro
Anthropic: Claude Opus 4.1 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and provide consistently better answers.
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Opus 4.1 | OpenAI: o1-pro | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 200K | 200K | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $15.00 | $150.00 | 🏆 Anthropic: Claude Opus 4.1 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $75.00 | $600.00 | 🏆 Anthropic: Claude Opus 4.1 |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | — | 🏆 Anthropic: Claude Opus 4.1 |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Anthropic: Claude Opus 4.1 better than OpenAI: o1-pro?
Anthropic: Claude Opus 4.1 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Opus 4.1 and OpenAI: o1-pro?
Input: $15.00 vs $150.00 per 1M tokens. Output: $75.00 vs $600.00 per 1M tokens.
What context windows do Anthropic: Claude Opus 4.1 and OpenAI: o1-pro support?
Anthropic: Claude Opus 4.1 supports up to 200K tokens. OpenAI: o1-pro supports up to 200K tokens.
Do both Anthropic: Claude Opus 4.1 and OpenAI: o1-pro support tool calling?
Anthropic: Claude Opus 4.1: yes. OpenAI: o1-pro: not advertised.