GPT-5.2 vs GPT-5.6 Terra
GPT-5.6 Terra is cheaper on output tokens, while GPT-5.6 Terra offers a larger context window. Choose GPT-5.2 or GPT-5.6 Terra based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.2 | GPT-5.6 Terra |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | $1.75 | $2.00 |
| Output / 1M tokens | $14.00 | $12.00 |
| Context window | 400K | 1.1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | Dec 2025 | — |
| LiveBench score | 75.4 | — |
| Epoch Capabilities Index score | 154 | 160 |
| GPQA Diamond score | 91.4 | 93.3 |
| SWE-bench Multilingual score | 66.7 | — |
| SWE-bench Verified score | 72.8 | — |
| LMArena (Chatbot Arena) Elo score | 1416 | 1448 |
| LMArena WebDev Elo score | 1416 | 1520 |
| LMArena Vision Elo score | 1246 | 1271 |
| FrontierMath score | 40.7 | — |
FAQ
Is GPT-5.2 or GPT-5.6 Terra cheaper?
GPT-5.6 Terra is cheaper on output tokens ($12.00 vs $14.00 per 1M).
Which has the larger context window, GPT-5.2 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.