Claude Opus 4.6 (Fast) vs GPT-5 Pro
GPT-5 Pro is cheaper on output tokens, while Claude Opus 4.6 (Fast) offers a larger context window. Choose Claude Opus 4.6 (Fast) or GPT-5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Opus 4.6 (Fast) | GPT-5 Pro |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input / 1M tokens | $30.00 | $15.00 |
| Output / 1M tokens | $150.00 | $120.00 |
| Context window | 1M | 400K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Oct 2025 |
| LiveBench score | 76.8 | 71.3 |
| Epoch Capabilities Index score | — | 151 |
FAQ
Is Claude Opus 4.6 (Fast) or GPT-5 Pro cheaper?
GPT-5 Pro is cheaper on output tokens ($120.00 vs $150.00 per 1M).
Which has the larger context window, Claude Opus 4.6 (Fast) or GPT-5 Pro?
Claude Opus 4.6 (Fast) has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.