GPT-6 Sol scores 62.8 on the Respan Index (#8), ahead of Kimi K2.7 Code at 34.1 (#58). GPT-6 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 Sol has the larger context window (1.1M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| 52.9% |
| 45.7% |
| LiveBench Coding (LiveBench) | 81.8% | 74% |
| LiveBench Data Analysis (LiveBench) | 81.2% | 62.7% |
| LiveBench Instruction Following (LiveBench) | 68.6% | 56.3% |
| LiveBench Language (LiveBench) | 85.3% | 77.9% |
| LiveBench Mathematics (LiveBench) | 96.4% | 79.6% |
| LiveBench Reasoning (LiveBench) | 88.7% | 82.8% |
| OTIS Mock AIME 2024-2025 (Epoch AI) | 100% | 95.6% |
| SimpleQA Verified | 60.7% | 36.5% |
| Vending-Bench 2 (Andon Labs) | 14427.85 | 5082.94 |
| LMArena WebDev (LMArena) | 1689 | 1473 |
| SimpleBench (SimpleBench) | 73.1% | 57.9% |
Higher is better. Each score links to where it was published.