Fast-mode variant of [Opus 4.7](/anthropic/claude-opus-4.7) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Model details →Anthropic: Claude Opus 4.7 (Fast) vs OpenAI: o3 Pro
OpenAI: o3 Pro 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 4.7 (Fast) | OpenAI: o3 Pro | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 200K | 🏆 Anthropic: Claude Opus 4.7 (Fast) |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $30.00 | $20.00 | 🏆 OpenAI: o3 Pro |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $150.00 | $80.00 | 🏆 OpenAI: o3 Pro |
| 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 4.7 (Fast) better than OpenAI: o3 Pro?
OpenAI: o3 Pro 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 4.7 (Fast) and OpenAI: o3 Pro?
Input: $30.00 vs $20.00 per 1M tokens. Output: $150.00 vs $80.00 per 1M tokens.
What context windows do Anthropic: Claude Opus 4.7 (Fast) and OpenAI: o3 Pro support?
Anthropic: Claude Opus 4.7 (Fast) supports up to 1M tokens. OpenAI: o3 Pro supports up to 200K tokens.
Do both Anthropic: Claude Opus 4.7 (Fast) and OpenAI: o3 Pro support tool calling?
Anthropic: Claude Opus 4.7 (Fast): yes. OpenAI: o3 Pro: yes.
Compare Anthropic: Claude Opus 4.7 (Fast) with other models
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