GPT-6.1 Sol scores 69.4 on the Respan Index (#4), ahead of Kimi K2.7 Code at 34.1 (#58). GPT-6.1 Sol leads on 16 of the 16 benchmarks both report. Kimi K2.7 Code is 2.3x cheaper per token at list price. GPT-6.1 Sol has the larger context window (1.1M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| GPQA Diamond |
| 95.4% |
| 87.9% |
| LiveBench Agentic Coding (LiveBench) | 56.8% | 45.7% |
| LiveBench Coding (LiveBench) | 80.7% | 74% |
| LiveBench Data Analysis (LiveBench) | 82.7% | 62.7% |
| LiveBench Instruction Following (LiveBench) | 74.2% | 56.3% |
| LiveBench Language (LiveBench) | 90.1% | 77.9% |
| LiveBench Mathematics (LiveBench) | 96.8% | 79.6% |
| LiveBench Reasoning (LiveBench) | 92.6% | 82.8% |
| OTIS Mock AIME 2024-2025 (Epoch AI) | 100% | 95.6% |
| SimpleQA Verified | 73.9% | 36.5% |
| LMArena WebDev (LMArena) | 1758 | 1473 |
| SimpleBench (SimpleBench) | 82.9% | 57.9% |
Higher is better. Each score links to where it was published.