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 software engineering, achieving leading results …
Model details →Anthropic: Claude Opus 4 vs OpenAI: GPT-5 Pro
Anthropic: Claude Opus 4 and OpenAI: GPT-5 Pro are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
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 accuracy in high-stake…
Model details →Side-by-side comparison
| Capability | Anthropic: Claude Opus 4 | OpenAI: GPT-5 Pro | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 200K | 400K | 🏆 OpenAI: GPT-5 Pro |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $15.00 | $15.00 | Tie |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $75.00 | $120.00 | 🏆 Anthropic: Claude Opus 4 |
| 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: GPT-5 Pro?
Anthropic: Claude Opus 4 and OpenAI: GPT-5 Pro are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between Anthropic: Claude Opus 4 and OpenAI: GPT-5 Pro?
Input: $15.00 vs $15.00 per 1M tokens. Output: $75.00 vs $120.00 per 1M tokens.
What context windows do Anthropic: Claude Opus 4 and OpenAI: GPT-5 Pro support?
Anthropic: Claude Opus 4 supports up to 200K tokens. OpenAI: GPT-5 Pro supports up to 400K tokens.
Do both Anthropic: Claude Opus 4 and OpenAI: GPT-5 Pro support tool calling?
Anthropic: Claude Opus 4: yes. OpenAI: GPT-5 Pro: yes.