OpenAI: GPT-5.1 vs OpenAI: GPT-5 Pro
OpenAI: GPT-5.1 is cheaper on output tokens. Choose OpenAI: GPT-5.1 or OpenAI: GPT-5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | OpenAI: GPT-5.1 | OpenAI: GPT-5 Pro |
|---|---|---|
| Provider | Kilo Gateway | Kilo Gateway |
| Input / 1M tokens | $1.25 | $15.00 |
| Output / 1M tokens | $10.00 | $120.00 |
| Context window | 400K | 400K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Nov 2025 | Oct 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.