Model comparison
Gemini 3.5 Flash vs Gemini 3 Pro
Gemini 3.5 Flash and Gemini 3 Pro score almost the same on the Noometry Index (54.2 vs 54.8), so choose on price, context window or the category you care about most.
Last verified . 39 shared benchmarks.
GoogleSummary
- They share 39 benchmarks with published results for both. Gemini 3.5 Flash scores higher in 6 categories and Gemini 3 Pro in 4 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where Gemini 3 Pro leads 40.6 to 24.7.
- The biggest single-benchmark swing is ARC-AGI-2: 72.1% for Gemini 3.5 Flash and 31.1% for Gemini 3 Pro.
Side by side
| Gemini 3.5 Flash | Gemini 3 Pro | |
|---|---|---|
| Provider | ||
| Noometry Index | 54.2 | 54.8 |
| Released | 2026-05-19 | 2025-11-18 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $1.50 | — |
| Output $ / M tokens | $9 | — |
| Results tracked | 54 | 67 |
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Category by category
Coding Gemini 3 Pro leads
Gemini 3.5 Flash: 49.4 (#49), Gemini 3 Pro: 51.6 (#39)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| SWE-bench Verified | 79.3% | 72.9% |
| LMArena WebDev | 1499 | 1440 |
| WeirdML | 62.6% | 69.9% |
| LMArena Coding | 1492 | 1481 |
| ALE-Bench | 911.02 | 1,177 |
| DeepSWE | 37.4% | — |
| SWE-bench Verified (bash only) | — | 74.2% |
| SWE-bench Multilingual | — | 68.7% |
| SciCode | 53.1% | — |
| GSO | — | 18.6% |
| AlgoTune | — | 1.83 |
Agentic & Tool Use Gemini 3 Pro leads
Gemini 3.5 Flash: 24.7 (#114), Gemini 3 Pro: 40.6 (#23)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| Vending-Bench 2 | 5,396 | 5,478 |
| Terminal-Bench | — | 69.4% |
| APEX-Agents | 27.5% | — |
| Berkeley Function Calling Leaderboard | — | 72.5% |
| GDPval | — | 40.3% |
| Remote Labor Index | — | 1.3% |
| τ²-bench Airline | — | 80.5% |
| τ²-bench Banking | — | 18% |
| τ²-bench Retail | — | 75.9% |
| τ²-bench Telecom | — | 91% |
| DeepResearch Bench | — | 46.3% |
| BALROG | — | 58.1% |
| GBAEval | 6.7% | — |
| GDP.pdf | 14% | — |
| LMArena Search | — | 1207 |
| METR Time Horizons | — | 71% |
Reasoning Gemini 3.5 Flash leads
Gemini 3.5 Flash: 62.8 (#18), Gemini 3 Pro: 52.5 (#31)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| ARC-AGI-2 | 72.1% | 31.1% |
| SimpleBench | 76.7% | 76.4% |
| NYT Connections (extended) | 92.6% | 94.4% |
| ARC-AGI-1 | 92.5% | 75% |
| CritPt | 13.1% | 6.9% |
| Chess Puzzles | 50% | 31% |
| EnigmaEval | 25.4% | 18.2% |
| LMArena Hard Prompts | 1488 | 1480 |
| Epoch Capabilities Index | 154.46 | 152.92 |
| ForecastBench | 59 | 61.2 |
| Kagi LLM Benchmark | — | 80.1% |
| EBR-Bench | 4.8% | — |
| Mystery Game Puzzles | 32% | — |
| DTBench | 94.7% | — |
| LMCA | 47.1% | — |
| Surface Evolver Bench | 58.1% | — |
Math Gemini 3.5 Flash leads
Gemini 3.5 Flash: 60.7 (#36), Gemini 3 Pro: 49.9 (#59)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| MathArena Final-Answer Competitions | 76.3% | 67% |
| OTIS Mock AIME 2024-2025 | 95.6% | 91.4% |
| ProofBench | 31% | 20% |
| LMArena Math | 1504 | 1476 |
| FrontierMath (Feb 2025 set) | 39% | 37.6% |
| FrontierMath Tier 4 (v1) | 14.6% | 18.8% |
| FrontierMath (Tiers 1-3) | 62.8% | — |
| FrontierMath Tier 4 | 26.8% | — |
| Omni-MATH | — | 55.5% |
Knowledge Gemini 3.5 Flash leads
Gemini 3.5 Flash: 66.3 (#11), Gemini 3 Pro: 64.4 (#16)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| GPQA Diamond | 92.8% | 92.6% |
| LMArena Expert | 1495 | 1475 |
| Humanity's Last Exam | — | 37.5% |
| SimpleQA Verified | 66.2% | — |
| MMLU-Pro | — | 90.3% |
| Vectara Hallucination Rate | — | 13.6% |
| GPQA (HELM) | — | 80.3% |
Multimodal Gemini 3 Pro leads
Gemini 3.5 Flash: 45.7 (#15), Gemini 3 Pro: 57.6 (#2)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| LMArena Vision | 1310 | 1305 |
| LMArena Document | 1463 | 1434 |
| GeoBench | — | 84% |
| VPCT | — | 91% |
| Blueprint-Bench 2 | 33.6% | — |
Multilingual Too close to call
Gemini 3.5 Flash: 57.0 (#13), Gemini 3 Pro: 56.9 (#16)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| LMArena Non-English | 1476 | 1474 |
| LMArena Chinese | 1526 | 1523 |
| LMArena French | 1490 | 1492 |
| LMArena German | 1492 | 1515 |
| LMArena Japanese | 1486 | 1510 |
| LMArena Korean | 1451 | 1448 |
| LMArena Russian | 1493 | 1493 |
| LMArena Spanish | 1480 | 1470 |
Instruction Following Too close to call
Gemini 3.5 Flash: 77.0 (#30), Gemini 3 Pro: 76.3 (#45)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| LMArena Instruction Following | 1467 | 1458 |
| IFEval | — | 87.7% |
Long Context Gemini 3.5 Flash leads
Gemini 3.5 Flash: 45.4 (#38), Gemini 3 Pro: 44.0 (#79)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| LMArena Longer Query | 1482 | 1471 |
| CL-bench | — | 15.8% |
Writing & Preference Too close to call
Gemini 3.5 Flash: 65.5 (#47), Gemini 3 Pro: 66.4 (#35)
| Benchmark | Gemini 3.5 Flash | Gemini 3 Pro |
|---|---|---|
| LMArena Text | 1482 | 1479 |
| LMArena Creative Writing | 1470 | 1482 |
| LMArena Multi-Turn | 1481 | 1484 |
| EQ-Bench Creative Writing | — | 1525 |
| WildBench | — | 85.9% |
| EQ-Bench 4 | 1087 | — |
Frequently asked questions
Is Gemini 3.5 Flash better than Gemini 3 Pro?
Gemini 3.5 Flash and Gemini 3 Pro score almost the same on the Noometry Index (54.2 vs 54.8), so choose on price, context window or the category you care about most.
Is Gemini 3.5 Flash or Gemini 3 Pro better for coding?
Gemini 3 Pro scores higher on coding benchmarks: 51.6 versus 49.4 in the Noometry coding category.
How many benchmarks do Gemini 3.5 Flash and Gemini 3 Pro share?
39 benchmarks have published results for both models. Gemini 3.5 Flash has 54 scored results on Noometry and Gemini 3 Pro has 67.