Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis...
Model details →Claude Opus 5 vs OpenAI: GPT-5 Pro
Claude Opus 5 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and...
Model details →Side-by-side comparison
| Capability | Claude Opus 5 | OpenAI: GPT-5 Pro | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 400K | 🏆 Claude Opus 5 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $5.00 | $15.00 | 🏆 Claude Opus 5 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $25.00 | $120.00 | 🏆 Claude Opus 5 |
| 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 Claude Opus 5 better than OpenAI: GPT-5 Pro?
Claude Opus 5 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Claude Opus 5 and OpenAI: GPT-5 Pro?
Input: $5.00 vs $15.00 per 1M tokens. Output: $25.00 vs $120.00 per 1M tokens.
What context windows do Claude Opus 5 and OpenAI: GPT-5 Pro support?
Claude Opus 5 supports up to 1M tokens. OpenAI: GPT-5 Pro supports up to 400K tokens.
Do both Claude Opus 5 and OpenAI: GPT-5 Pro support tool calling?
Claude Opus 5: yes. OpenAI: GPT-5 Pro: yes.
Compare Claude Opus 5 with other models
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