DeepSeek V4.1 Flash vs Gemini 3 Pro
DeepSeek V4.1 Flash 
Gemini 3 Pro Verdict
- DeepSeek V4.1 Flash (max) and Gemini 3 Pro are level on quality (61.9 vs 61.1).
- DeepSeek V4.1 Flash (max) is stronger in coding, composite, knowledge, long context, reasoning.
- Gemini 3 Pro is stronger in agents & tools, multimodal, human preference, instruction following, maths.
- DeepSeek V4.1 Flash (max) is 17× cheaper ($0.262 vs $4.50 per 1M blended).
| Metric | DeepSeek V4.1 Flash (max) | Gemini 3 Pro |
|---|---|---|
| BenchLeader Index | 61.9 | 61.1 |
| Agents & tools score | 59.6 | 61.4 |
| Coding score | 68.9 | 58.8 |
| Composite score | 74.5 | – |
| Knowledge score | 61.7 | 56.5 |
| Long context score | 68.5 | – |
| Multimodal score | 61.4 | 66.0 |
| Reasoning score | 69.5 | 67.1 |
| Human preference score | – | 68.8 |
| Instruction following score | – | 61.9 |
| Maths score | – | 54.8 |
| Blended price $/M | $0.262 | $4.50 |
| Output speed | 215 tok/s | – |
| Time to first answer | 10.5 s | – |
| Context window | 1M | 1.0M |
| GPQA Diamond | – | 92.6% |
| OTIS Mock AIME | – | 91.4% |
| SWE-bench Verified (Epoch) | – | 72.9% |
| Humanity's Last Exam | – | 37.5% |
| Terminal-Bench | – | 69.4% |
| SimpleBench | – | 76.4% |
| GDPval | – | 40.3% |
| Remote Labor Index | – | 1.3% |
| WeirdML | – | 69.9% |
| APEX-Agents | – | 31.5% |
| ProofBench | – | 20.0% |
| GSO-Bench | – | 18.6% |
| Epoch Capabilities Index | – | 153 |
| LMArena Text | – | 1486 |
| LMArena Hard Prompts | – | 1504 |
| LMArena Coding | – | 1518 |
| LMArena WebDev | 1614 | 1439 |
| LMArena Vision | – | 1304 |
| LMArena Agent | 4.9 | – |
| LiveBench | 81.1% | – |
| LiveBench Reasoning | 86.7% | – |
| LiveBench Coding | 80.0% | – |
| LiveBench Agentic Coding | 77.3% | – |
| LiveBench Mathematics | 93.3% | – |
| LiveBench Data Analysis | 79.3% | – |
| LiveBench Language | 81.2% | – |
| LiveBench Instruction Following | 70.0% | – |
| AA Intelligence Index | 39.5 | – |
| AA-LCR | 84.0% | – |
| MMMU-Pro | 77.0% | – |
| AA-Omniscience | -5.3 | – |
| Humanity's Last Exam (AA) | 39.3% | – |
| SciCode (AA) | 51.9% | – |
| LiveCodeBench | – | 86.4% |
| MMLU-Pro | – | 90.1% |
| AIME 2026 | – | 91.7% |
| HMMT February 2026 | – | 86.4% |
| MathArena Apex | – | 23.4% |
| SWE-Bench Pro | – | 43.3% |
| MCP Atlas | – | 70.3% |
| MultiChallenge | – | 65.7% |
| PRBench Finance | – | 39.2% |
| PRBench Legal | – | 40.6% |
| VISTA | – | 51.5% |
| MultiNRC | – | 59.0% |
| TutorBench | – | 53.7% |
| MMMU-Pro (official) | – | 81.0% |
| Kagi LLM Benchmark | – | 80.1% |
| IFEval (HELM) | – | 87.6% |
| Omni-MATH (HELM) | – | 55.6% |
| WildBench (HELM) | – | 85.9% |
| MMLU-Pro (HELM) | – | 90.3% |
| GPQA Diamond (HELM) | – | 80.3% |
| HELM Capabilities mean | – | 79.9% |
| SWE-bench Verified (bash only) | – | 74.2% |
| SWE-bench Verified (any scaffold) | – | 77.4% |
| ARC-AGI-1 | – | 75.0% |
| ARC-AGI-2 | – | 54.0% |
| BFCL Overall | – | 72.5% |
| CritPt | 14.3% | – |
| GDPval (AA) | 56.6% | – |
| Poker Agent | – | 1078.9% |
| FORTRESS | – | 41.7% |
| MASK | – | 42.6% |
| PropensityBench | – | 52.9% |
| SciPredict | – | 25.3% |
| SWE-Bench Pro (private) | – | 17.9% |
| VTB | – | 26.9% |
| LMArena Maths | – | 1477 |
| LMArena Creative Writing | – | 1483 |
| LMArena Instruction Following | – | 1473 |
| LMArena Multi-turn | – | 1495 |
| LMArena Longer Queries | – | 1491 |
| LMArena Document | – | 1451 |
| Chess Puzzles | – | 31.0% |
| BALROG | – | 58.1% |
| GeoBench | – | 84.0% |
| VPCT | – | 91.0% |
| CL-bench | – | 15.8% |
| METR Time Horizons | – | 71.0% |
| ForecastBench | – | 61.2% |
| ALE-Bench | – | 1176.8 |
| AlgoTune | – | 1.8 |
| Vending-Bench 2 | – | 5478.2 |
Data as of 2026-09-19. Best configuration of each model; every score links to its source on the model pages.
DeepSeek V4.1 Flash vs Gemini 3 Pro: questions
- Is DeepSeek V4.1 Flash better than Gemini 3 Pro?
- DeepSeek V4.1 Flash (max) and Gemini 3 Pro are level on quality (61.9 vs 61.1). The BenchLeader Index combines every independent quality benchmark; DeepSeek V4.1 Flash (max) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Is DeepSeek V4.1 Flash better than Gemini 3 Pro for coding?
- DeepSeek V4.1 Flash scores higher in coding (69 vs 59 on the category index, where 50 is average).
- Is DeepSeek V4.1 Flash better than Gemini 3 Pro for agentic tasks?
- Gemini 3 Pro scores higher in agentic tasks (61 vs 60 on the category index, where 50 is average).
- Which is cheaper, DeepSeek V4.1 Flash or Gemini 3 Pro?
- DeepSeek V4.1 Flash is cheaper: $0.262 against $4.50 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- Gemini 3 Pro accepts more context: 1.0M against 1M tokens.