Model comparison
Gemini 3.5 Flash vs Grok 3
Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 39.9 on the Noometry Index.
Last verified . 26 shared benchmarks.
GoogleSummary
- They share 26 benchmarks with published results for both. Gemini 3.5 Flash scores higher in 8 categories and Grok 3 in 1 category; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.5 Flash leads 62.8 to 13.7.
- The biggest single-benchmark swing is ARC-AGI-1: 92.5% for Gemini 3.5 Flash and 5.5% for Grok 3.
Side by side
| Gemini 3.5 Flash | Grok 3 | |
|---|---|---|
| Provider | xAI | |
| Noometry Index | 54.2 | 39.9 |
| Released | 2026-05-19 | 2025-04-09 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $1.50 | — |
| Output $ / M tokens | $9 | — |
| Results tracked | 54 | 40 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Gemini 3.5 Flash leads
Gemini 3.5 Flash: 49.4 (#49), Grok 3: 41.9 (#115)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| WeirdML | 62.6% | 37.2% |
| LMArena Coding | 1492 | 1432 |
| SWE-bench Verified | 79.3% | — |
| DeepSWE | 37.4% | — |
| Aider Polyglot | — | 53.3% |
| LMArena WebDev | 1499 | — |
| SciCode | 53.1% | — |
| ALE-Bench | 911.02 | — |
Agentic & Tool Use Grok 3 leads
Gemini 3.5 Flash: 24.7 (#114), Grok 3: 30.5 (#76)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| APEX-Agents | 27.5% | — |
| BALROG | — | 29.5% |
| GBAEval | 6.7% | — |
| GDP.pdf | 14% | — |
| Vending-Bench 2 | 5,396 | — |
Reasoning Gemini 3.5 Flash leads
Gemini 3.5 Flash: 62.8 (#18), Grok 3: 13.7 (#333)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| ARC-AGI-2 | 72.1% | 0% |
| SimpleBench | 76.7% | 36.1% |
| ARC-AGI-1 | 92.5% | 5.5% |
| LMArena Hard Prompts | 1488 | 1434 |
| Epoch Capabilities Index | 154.46 | 138.33 |
| Kagi LLM Benchmark | — | 61.3% |
| NYT Connections (extended) | 92.6% | — |
| CritPt | 13.1% | — |
| Chess Puzzles | 50% | — |
| EnigmaEval | 25.4% | — |
| EBR-Bench | 4.8% | — |
| Mystery Game Puzzles | 32% | — |
| DTBench | 94.7% | — |
| LMCA | 47.1% | — |
| Surface Evolver Bench | 58.1% | — |
| ForecastBench | 59 | — |
Math Gemini 3.5 Flash leads
Gemini 3.5 Flash: 60.7 (#36), Grok 3: 38.0 (#145)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 95.6% | 55.6% |
| LMArena Math | 1504 | 1391 |
| FrontierMath (Feb 2025 set) | 39% | 3.8% |
| FrontierMath Tier 4 (v1) | 14.6% | 0% |
| FrontierMath (Tiers 1-3) | 62.8% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 76.3% | — |
| ProofBench | 31% | — |
| Omni-MATH | — | 46.4% |
| MATH Level 5 | — | 88.7% |
Knowledge Gemini 3.5 Flash leads
Gemini 3.5 Flash: 66.3 (#11), Grok 3: 46.2 (#82)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| GPQA Diamond | 92.8% | 75.8% |
| LMArena Expert | 1495 | 1421 |
| SimpleQA Verified | 66.2% | — |
| MMLU-Pro | — | 78.8% |
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 5.8% |
| GPQA (HELM) | — | 65% |
Multimodal Not comparable
Gemini 3.5 Flash: 45.7 (#15), Grok 3: —
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| LMArena Vision | 1310 | — |
| Blueprint-Bench 2 | 33.6% | — |
| LMArena Document | 1463 | — |
Multilingual Gemini 3.5 Flash leads
Gemini 3.5 Flash: 57.0 (#13), Grok 3: 52.3 (#87)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| LMArena Non-English | 1476 | 1410 |
| LMArena Chinese | 1526 | 1448 |
| LMArena French | 1490 | 1460 |
| LMArena German | 1492 | 1431 |
| LMArena Japanese | 1486 | 1387 |
| LMArena Korean | 1451 | 1373 |
| LMArena Russian | 1493 | 1416 |
| LMArena Spanish | 1480 | 1417 |
Instruction Following Gemini 3.5 Flash leads
Gemini 3.5 Flash: 77.0 (#30), Grok 3: 75.0 (#73)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| LMArena Instruction Following | 1467 | 1409 |
| IFEval | — | 88.4% |
Long Context Gemini 3.5 Flash leads
Gemini 3.5 Flash: 45.4 (#38), Grok 3: 38.7 (#192)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1482 | 1439 |
| Fiction.LiveBench | — | 58.3% |
Writing & Preference Gemini 3.5 Flash leads
Gemini 3.5 Flash: 65.5 (#47), Grok 3: 55.8 (#141)
| Benchmark | Gemini 3.5 Flash | Grok 3 |
|---|---|---|
| LMArena Text | 1482 | 1426 |
| LMArena Creative Writing | 1470 | 1414 |
| LMArena Multi-Turn | 1481 | 1425 |
| Short-Story Creative Writing | — | 76.4% |
| EQ-Bench Creative Writing | — | 1186 |
| WildBench | — | 84.9% |
| EQ-Bench 4 | 1087 | — |
Frequently asked questions
Is Gemini 3.5 Flash better than Grok 3?
Gemini 3.5 Flash is the stronger model overall, scoring 54.2 to 39.9 on the Noometry Index.
Is Gemini 3.5 Flash or Grok 3 better for coding?
Gemini 3.5 Flash scores higher on coding benchmarks: 49.4 versus 41.9 in the Noometry coding category.
How many benchmarks do Gemini 3.5 Flash and Grok 3 share?
26 benchmarks have published results for both models. Gemini 3.5 Flash has 54 scored results on Noometry and Grok 3 has 40.