Claude Opus 4.5 vs GPT-5 nano
GPT-5 nano costs 99% less at typical usage ($0.14 vs $10.0 per 1M tokens). Claude Opus 4.5 scores higher on 11 of 11 tasks.
| Spec | Claude Opus 4.5 | GPT-5 nano |
|---|---|---|
| Input /1M | $5.00 | $0.05 |
| Output /1M | $25.0 | $0.40 |
| Typical /1M | $10.0 | $0.14 |
| Context window | 200k | 400k |
| Speed | Measured | Blazing |
| Privacy | Strong | Standard |
| Open weights | No | No |
Claude Opus 4.5
Steady since we started tracking (Jul 13, 2026)
GPT-5 nano
Steady since we started tracking (Jul 13, 2026)
Quality by task
Coding99/72
Agents99/68
Reasoning98/74
Writing96/76
Chat92/80
Classify90/82
Extract92/80
Summarize94/80
Translate90/80
Vision93/78
General96/76
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Prices are list $/1M tokens, hand-maintained from public provider pricing. Task scores are benchmark-informed 0-100 estimates, not gospel — validate on your own evals before moving production traffic. Not affiliated with any model provider.