Gemini 3.5 Flash scores 42.3 on the Respan Index (#40), ahead of Gemini 3.1 Pro Preview at 41.4 (#42). Gemini 3.1 Pro Preview leads on 16 of the 29 benchmarks both report. Gemini 3.5 Flash is 1.3x cheaper per token at list price.
* Estimated: no published scores in that category. How the Respan Index works
| FrontierMath Tier 4 v2 (Epoch AI) |
| 26.8% |
| 26.8% |
| FrontierMath Tiers 1-3 v2 (Epoch AI) | 59.6% | 62.8% |
| GPQA Diamond | 94.3% | 92.8% |
| LiveBench Agentic Coding (LiveBench) | 44.1% | 49% |
| LiveBench Coding (LiveBench) | 76.5% | 78.2% |
| LiveBench Data Analysis (LiveBench) | 78.5% | 64.9% |
| LiveBench Instruction Following (LiveBench) | 79.1% | 75.6% |
| LiveBench Language (LiveBench) | 85.4% | 84.6% |
| LiveBench Mathematics (LiveBench) | 91% | 88.2% |
| LiveBench Reasoning (LiveBench) | 84% | 82% |
| Mystery Game Puzzles (Epoch AI) | 34% | 32% |
| OTIS Mock AIME 2024-2025 (Epoch AI) | 95.6% | 95.6% |
| SAGE (Vals AI) | 48.7% | 49.9% |
| SimpleQA Verified | 73.5% | 66.2% |
| SWE-bench Verified (Epoch AI) | 75.6% | 79.3% |
| Terminal-Bench 4.0 (Vals AI) | 2.5% | 6.1% |
| Vending-Bench 2 (Andon Labs) | 3774.25 | 5396.42 |
| WeirdML (Håvard Tveit Ihle) | 72.1% | 62.6% |
| LMArena Elo | 1480 | 1477 |
| LMArena Vision (LMArena) | 1279 | 1284 |
| LMArena WebDev (LMArena) | 1446 | 1499 |
| AIME 2026 | 98.3% | 95% |
| Toolathlon-Verified (HKUST) | 61.1% | 67.3% |
| ARC-AGI-2 | 77.1% | 72.1% |
| SimpleBench (SimpleBench) | 79.6% | 76.7% |
Higher is better. Each score links to where it was published.