GPT-6 Astra scores 70.5 on the Respan Index (#2), ahead of Qwen3.8-Flash-Next at 42.7 (#39). GPT-6 Astra leads on 8 of the 10 benchmarks both report. GPT-6 Astra has the larger context window (1.1M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| LiveBench Instruction Following (LiveBench) |
| 75.6% |
| 77.1% |
| LiveBench Language (LiveBench) | 89.4% | 74.6% |
| LiveBench Mathematics (LiveBench) | 96.8% | 85.8% |
| LiveBench Reasoning (LiveBench) | 92.7% | 87.4% |
| LMArena Agent (LMArena) | 0.1227 | -0.0073 |
| LMArena WebDev (LMArena) | 1788 | 1638 |
Higher is better. Each score links to where it was published.