GPT-5.6 Terra scores 53.5 on the Respan Index (#14), ahead of MiMo-V2.6-Flash at 51.1 (#18). GPT-5.6 Terra leads on 5 of the 6 benchmarks both report. GPT-5.6 Terra has the larger context window (1.1M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| LMArena Vision (LMArena) |
| 1268 |
| 1248 |
| DeepSWE v1.1 | 69.6% | 67.9% |
Higher is better. Each score links to where it was published.