GPT-5.6 Sol vs GPT-5.6 Terra
GPT-5.6 Sol vs GPT-5.6 Terra: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- GPT-5.6 Sol is 1.1× cheaper than GPT-5.6 Terra for the same mix of input and output tokens.
- Both have the same context window.
- GPT-5.6 Sol scores higher on independent tests (overall index 162.0 vs 159.3).
- GPT-5.6 Sol is both cheaper and better rated: for most uses it is the better choice.
| GPT-5.6 Sol | GPT-5.6 Terra | |
|---|---|---|
| Company | OpenAI | OpenAI |
| Released | Jul 9, 2026 | Jul 9, 2026 |
| Overall index | 162.0 ● | 159.3 |
| GPQA Diamond | 93.5% ● | 93.3% |
| AIME math | 100% ● | 100% |
| FrontierMath | 89.1% ● | 86.0% |
| SimpleQA Verified | 69.7% ● | 43.2% |
| Input (per 1M tokens) | $2 | $2 |
| Output (per 1M tokens) | $10 ● | $12 |
| Cost for 1M input + 1M output tokens | $12.00 ● | $14.00 |
| Providers | 7 | 7 |
| Context | 1.1M | 1.1M |
| Max output | 128K | 128K |
| Inputs | Files, Image, Text | Files, Image, Text |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | — |