Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...
Model details →Anthropic: Claude Opus 4 vs OpenAI: o3 Pro (batch)
OpenAI: o3 Pro (batch) wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently...
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Opus 4 | OpenAI: o3 Pro (batch) | 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 | $10.00 | 🏆 OpenAI: o3 Pro (batch) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $75.00 | $40.00 | 🏆 OpenAI: o3 Pro (batch) |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| 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 better than OpenAI: o3 Pro (batch)?
OpenAI: o3 Pro (batch) wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Anthropic: Claude Opus 4 and OpenAI: o3 Pro (batch)?
Input: $15.00 vs $10.00 per 1M tokens. Output: $75.00 vs $40.00 per 1M tokens.
What context windows do Anthropic: Claude Opus 4 and OpenAI: o3 Pro (batch) support?
Anthropic: Claude Opus 4 supports up to 200K tokens. OpenAI: o3 Pro (batch) supports up to 200K tokens.
Do both Anthropic: Claude Opus 4 and OpenAI: o3 Pro (batch) support tool calling?
Anthropic: Claude Opus 4: yes. OpenAI: o3 Pro (batch): yes.