Comparing 2 models
DeepSeek V4.1 Flash vs Gemini 3.5 Flash
Benchmarks through
Verdict
DeepSeek V4.1 Flash and Gemini 3.5 Flash are not yet ranked on the same task, so compare the specifications below. DeepSeek V4.1 Flash costs 41.7x less per input token. Only DeepSeek V4.1 Flash has open weights for self-hosting.
- Choose DeepSeek V4.1 Flash for you need to self-host.
Built from the published task rankings below; ranks come from each task's own weighted benchmarks, so a win on one task says nothing about another.
Measured head to head
Benchmarks both models were run on
| Evaluation | DeepSeek V4.1 Flash | Gemini 3.5 Flash | Source |
|---|---|---|---|
| FrontierMath Tiers 1-3 (Epoch AI) | 67.4% ± 2.8 | 62.8% ± 2.9 | source · 2026-10-08 |
| GPQA Diamond (Epoch AI) | 89.8% ± 1.7 | 92.8% ± 1.6 | source · 2026-10-09 |
| LiveBench Agentic Coding | 77.3% | 49.0% | source · 2026-10-16 |
| LiveBench Coding | 80.0% | 78.2% | source · 2026-10-16 |
| LiveBench Data Analysis | 79.3% | 64.9% | source · 2026-10-16 |
| LiveBench Instruction Following | 70.0% | 75.6% | source · 2026-10-16 |
| LiveBench Language | 81.2% | 84.6% | source · 2026-10-16 |
| LiveBench Math | 93.3% | 88.2% | source · 2026-10-16 |
| LiveBench Reasoning | 86.7% | 82% | source · 2026-10-16 |
| LMArena Creative Writing | 1437 Elo | 1468 Elo | source · 2026-10-15 |
| LMArena Instruction Following | 1473 Elo | 1467 Elo | source · 2026-10-15 |
| LMArena Long Query | 1474 Elo | 1483 Elo | source · 2026-10-15 |
| LMArena Math | 1478 Elo | 1503 Elo | source · 2026-10-15 |
| LMArena Text | 1475 Elo | 1477 Elo | source · 2026-10-15 |
| LMArena Text Factuality | 1468 Elo | 1477 Elo | source · 2026-10-15 |
| LMArena Vision | 1260 Elo | 1284 Elo | source · 2026-10-09 |
| LMArena Vision Diagrams | 1291 Elo | 1309 Elo | source · 2026-10-09 |
| LMArena Vision OCR | 1270 Elo | 1293 Elo | source · 2026-10-09 |
| LMArena WebDev | 1619 Elo | 1499 Elo | source · 2026-10-13 |
| LMArena WebDev Image-to-Web | 1609 Elo | 1501 Elo | source · 2026-10-09 |
| OTIS Mock AIME (Epoch AI) | 98.3% ± 0.6 | 95.6% ± 2.7 | source · 2026-10-08 |
| SimpleQA Verified (Epoch AI) | 42.9% ± 1.6 | 66.2% ± 1.5 | source · 2026-10-13 |
Values are as published by each evaluator, in its own units; rows from different evaluators are not on a common scale.
task evidence
How they place when the question changes
Lower ranks are better. “Best” marks the strongest option in this shortlist for that task.