Model comparison
Gemini 3.1 Pro Preview vs Grok 3
Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 39.9 on the Noometry Index.
Last verified . 29 shared benchmarks.
GoogleSummary
- They share 29 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 9 categories and Grok 3 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 13.7.
- The biggest single-benchmark swing is ARC-AGI-1: 98% for Gemini 3.1 Pro Preview and 5.5% for Grok 3.
Side by side
| Gemini 3.1 Pro Preview | Grok 3 | |
|---|---|---|
| Provider | xAI | |
| Noometry Index | 56.7 | 39.9 |
| Released | 2026-02-19 | 2025-04-09 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $12 | — |
| Results tracked | 71 | 40 |
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Category by category
Coding Too close to call
Gemini 3.1 Pro Preview: 42.5 (#99), Grok 3: 41.9 (#115)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| WeirdML | 72.1% | 37.2% |
| LMArena Coding | 1484 | 1432 |
| SWE-bench Verified | 75.6% | — |
| DeepSWE | 11.7% | — |
| Aider Polyglot | — | 53.3% |
| LMArena WebDev | 1447 | — |
| SciCode | 58.9% | — |
| GSO | 22.6% | — |
| MirrorCode | 8.9% | — |
| ALE-Bench | 1,161 | — |
| AlgoTune | 2.02 | — |
Agentic & Tool Use Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 37.7 (#34), Grok 3: 30.5 (#76)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| BALROG | 57% | 29.5% |
| Terminal-Bench | 80.2% | — |
| APEX-Agents | 35.3% | — |
| τ²-bench Banking | 26% | — |
| DeepResearch Bench | 47.8% | — |
| PostTrainBench | 22% | — |
| ExploitBench | 26.1% | — |
| GBAEval | 0.8% | — |
| GDP.pdf | 17% | — |
| LMArena Search | 1211 | — |
| METR Time Horizons | 77% | — |
| Vending-Bench 2 | 3,774 | — |
Reasoning Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 71.7 (#12), Grok 3: 13.7 (#333)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| ARC-AGI-2 | 77.1% | 0% |
| SimpleBench | 79.6% | 36.1% |
| ARC-AGI-1 | 98% | 5.5% |
| LMArena Hard Prompts | 1485 | 1434 |
| Epoch Capabilities Index | 154.77 | 138.33 |
| Kagi LLM Benchmark | — | 61.3% |
| NYT Connections (extended) | 97.4% | — |
| CritPt | 17.7% | — |
| Chess Puzzles | 55% | — |
| EnigmaEval | 36.8% | — |
| Thematic Generalization | 79.4% | — |
| EBR-Bench | 14.3% | — |
| Mystery Game Puzzles | 34% | — |
| DTBench | 97.1% | — |
| LMCA | 53.8% | — |
| ForecastBench | 59 | — |
Math Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 62.1 (#34), Grok 3: 38.0 (#145)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 95.6% | 55.6% |
| LMArena Math | 1485 | 1391 |
| FrontierMath (Feb 2025 set) | 36.9% | 3.8% |
| FrontierMath Tier 4 (v1) | 16.7% | 0% |
| FrontierMath (Tiers 1-3) | 59.6% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 86.5% | — |
| ProofBench | 26% | — |
| Omni-MATH | — | 46.4% |
| MATH Level 5 | — | 88.7% |
Knowledge Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 71.8 (#3), Grok 3: 46.2 (#82)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| GPQA Diamond | 94.4% | 75.8% |
| Vectara Hallucination Rate | 10.4% | 5.8% |
| LMArena Expert | 1485 | 1421 |
| Humanity's Last Exam | 46.4% | — |
| SimpleQA Verified | 73.5% | — |
| MMLU-Pro | — | 78.8% |
| Confabulations | — | 14.2% |
| GPQA (HELM) | — | 65% |
Multimodal Not comparable
Gemini 3.1 Pro Preview: 37.9 (#69), Grok 3: —
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| LMArena Vision | 1296 | — |
| Blueprint-Bench 2 | 26.5% | — |
| Furniture Assembly | 26.7% | — |
| LMArena Document | 1444 | — |
Multilingual Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 57.0 (#12), Grok 3: 52.3 (#87)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| LMArena Non-English | 1477 | 1410 |
| LMArena Chinese | 1529 | 1448 |
| LMArena French | 1487 | 1460 |
| LMArena German | 1491 | 1431 |
| LMArena Japanese | 1493 | 1387 |
| LMArena Korean | 1455 | 1373 |
| LMArena Russian | 1498 | 1416 |
| LMArena Spanish | 1479 | 1417 |
Instruction Following Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 77.0 (#32), Grok 3: 75.0 (#73)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| LMArena Instruction Following | 1466 | 1409 |
| IFEval | — | 88.4% |
Long Context Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 47.4 (#18), Grok 3: 38.7 (#192)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1483 | 1439 |
| Fiction.LiveBench | — | 58.3% |
| CL-bench | 20.8% | — |
| CL-bench Life | 16.9% | — |
Writing & Preference Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 66.1 (#37), Grok 3: 55.8 (#141)
| Benchmark | Gemini 3.1 Pro Preview | Grok 3 |
|---|---|---|
| LMArena Text | 1481 | 1426 |
| LMArena Creative Writing | 1482 | 1414 |
| EQ-Bench Creative Writing | 1491 | 1186 |
| LMArena Multi-Turn | 1488 | 1425 |
| Short-Story Creative Writing | — | 76.4% |
| WildBench | — | 84.9% |
| EQ-Bench 4 | 1142 | — |
Frequently asked questions
Is Gemini 3.1 Pro Preview better than Grok 3?
Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 39.9 on the Noometry Index.
Is Gemini 3.1 Pro Preview or Grok 3 better for coding?
They score almost the same on coding (42.5 vs 41.9); test both on your own repository before choosing.
How many benchmarks do Gemini 3.1 Pro Preview and Grok 3 share?
29 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and Grok 3 has 40.