DeepSeek V4.1 Flash scores 50.9 on the Respan Index (#20), ahead of Grok 4.5 at 43.2 (#38). DeepSeek V4.1 Flash leads on 9 of the 15 benchmarks both report. DeepSeek V4.1 Flash is 5.7x cheaper per token at list price. DeepSeek V4.1 Flash has the larger context window (1M tokens).
* Estimated: no published scores in that category. How the Respan Index works
| LiveBench Instruction Following (LiveBench) |
| 70% |
| 71.5% |
| LiveBench Language (LiveBench) | 81.2% | 82.8% |
| LiveBench Mathematics (LiveBench) | 93.3% | 90.8% |
| LiveBench Reasoning (LiveBench) | 86.7% | 87.2% |
| SAGE (Vals AI) | 47.9% | 35% |
| Terminal-Bench 4.0 (Vals AI) | 19.7% | 8.6% |
| LMArena Agent (LMArena) | 0.0402 | 0.0121 |
| LMArena Elo | 1474 | 1450 |
| LMArena WebDev (LMArena) | 1620 | 1552 |
| SimpleBench (SimpleBench) | 66.7% | 70% |
| GPQA Diamond | 90.9% | 93.4% |
Higher is better. Each score links to where it was published.