o3 scores 23.9 on the Respan Index (#86), ahead of Qwen3.5-Flash at 22.0 (#87). o3 leads on 5 of the 8 benchmarks both report. Qwen3.5-Flash is 20x cheaper per token at list price. Qwen3.5-Flash has the larger context window (1M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| 84.4% |
| 84.4% |
| SAGE (Vals AI) | 41.8% | 42.5% |
| SimpleQA Verified | 49.4% | 20.3% |
| LMArena Elo | 1432 | 1398 |
Higher is better. Each score links to where it was published.