Gemini 1.5 Pro vs GPT-5.1
Both have similar output pricing, while GPT-5.1 offers a larger context window. Choose Gemini 1.5 Pro or GPT-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 1.5 Pro | GPT-5.1 |
|---|---|---|
| Provider | Google DeepMind | Poe |
| Input / 1M tokens | — | $1.10 |
| Output / 1M tokens | — | $9.00 |
| Context window | — | 400K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Feb 2024 | Nov 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.