Gemini 3.1 Pro Preview vs GPT-5.6 Terra
Both have similar output pricing, while GPT-5.6 Terra offers a larger context window. Choose Gemini 3.1 Pro Preview or GPT-5.6 Terra based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 3.1 Pro Preview | GPT-5.6 Terra |
|---|---|---|
| Provider | OpenAI | |
| Input / 1M tokens | $2.00 | $2.00 |
| Output / 1M tokens | $12.00 | $12.00 |
| Context window | 1M | 1.1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | Feb 2026 | — |
| LiveBench score | 77.1 | — |
| LMArena (Chatbot Arena) Elo score | 1480 | 1447 |
| LMArena WebDev Elo score | 1447 | 1522 |
| LMArena Vision Elo score | 1296 | 1271 |
| GPQA Diamond score | 94.4 | 93.3 |
| FrontierMath score | 36.9 | — |
| Epoch Capabilities Index score | — | 159 |
FAQ
Is Gemini 3.1 Pro Preview or GPT-5.6 Terra cheaper?
Gemini 3.1 Pro Preview and GPT-5.6 Terra have comparable output pricing.
Which has the larger context window, Gemini 3.1 Pro Preview or GPT-5.6 Terra?
GPT-5.6 Terra has the larger context window (1.1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.