GPT-5.6 Terra vs Gemini 3 Pro
Both have similar output pricing, while GPT-5.6 Terra offers a larger context window. Choose GPT-5.6 Terra or Gemini 3 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.6 Terra | Gemini 3 Pro |
|---|---|---|
| Provider | OpenAI | OpenCode |
| Input / 1M tokens | $2.00 | $2.00 |
| Output / 1M tokens | $12.00 | $12.00 |
| Context window | 1.1M | 1M |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Nov 2025 |
| LMArena (Chatbot Arena) Elo score | 1447 | 1479 |
| LMArena WebDev Elo score | 1522 | 1440 |
| Epoch Capabilities Index score | 159 | 153 |
| LMArena Vision Elo score | 1271 | 1305 |
| GPQA Diamond score | 93.3 | — |
| LiveBench score | — | 73.5 |
| SWE-bench Multilingual score | — | 68.7 |
FAQ
Is GPT-5.6 Terra or Gemini 3 Pro cheaper?
GPT-5.6 Terra and Gemini 3 Pro have comparable output pricing.
Which has the larger context window, GPT-5.6 Terra or Gemini 3 Pro?
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.