GPT-6 Astra scores 70.5 on the Respan Index (#2), ahead of GPT-6.1 Sol at 69.4 (#4). GPT-6 Astra leads on 14 of the 24 benchmarks both report. GPT-6.1 Sol is 5.0x cheaper per token at list price.
* Estimated: no published scores in that category. How the Respan Index works
| 93.7% |
| 93.7% |
| Furniture Assembly (Epoch AI) | 80% | 80% |
| GPQA Diamond | 95.4% | 96% |
| LiveBench Agentic Coding (LiveBench) | 56.8% | 57.3% |
| LiveBench Coding (LiveBench) | 80.7% | 80.4% |
| LiveBench Data Analysis (LiveBench) | 82.7% | 83% |
| LiveBench Instruction Following (LiveBench) | 74.2% | 75.6% |
| LiveBench Language (LiveBench) | 90.1% | 89.4% |
| LiveBench Mathematics (LiveBench) | 96.8% | 96.8% |
| LiveBench Reasoning (LiveBench) | 92.6% | 92.7% |
| Mystery Game Puzzles (Epoch AI) | 80% | 84% |
| OTIS Mock AIME 2024-2025 (Epoch AI) | 100% | 100% |
| SAGE (Vals AI) | 46.5% | 46.4% |
| SimpleQA Verified | 73.9% | 75.6% |
| Terminal-Bench 4.0 (Vals AI) | 55.1% | 59.6% |
| LMArena Agent (LMArena) | 0.1123 | 0.1227 |
| LMArena Elo | 1483 | 1477 |
| LMArena Vision (LMArena) | 1291 | 1284 |
| LMArena WebDev (LMArena) | 1758 | 1788 |
| SimpleBench (SimpleBench) | 82.9% | 86.5% |
Higher is better. Each score links to where it was published.