Model comparison
Gemini 3 Pro vs o3-mini
Gemini 3 Pro is the stronger model overall, scoring 54.8 to 36.7 on the Noometry Index.
Last verified . 30 shared benchmarks.
GoogleSummary
- They share 30 benchmarks with published results for both. Gemini 3 Pro scores higher in 9 categories and o3-mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3 Pro leads 52.5 to 16.3.
- The biggest single-benchmark swing is SimpleBench: 76.4% for Gemini 3 Pro and 22.8% for o3-mini.
Side by side
| Gemini 3 Pro | o3-mini | |
|---|---|---|
| Provider | OpenAI | |
| Noometry Index | 54.8 | 36.7 |
| Released | 2025-11-18 | 2024-12-20 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $1.10 |
| Output $ / M tokens | — | $4.40 |
| Results tracked | 67 | 51 |
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Category by category
Coding Gemini 3 Pro leads
Gemini 3 Pro: 51.6 (#39), o3-mini: 40.8 (#132)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| GSO | 18.6% | 1.3% |
| WeirdML | 69.9% | 43.7% |
| LMArena Coding | 1481 | 1378 |
| SWE-bench Verified | 72.9% | — |
| SWE-bench Verified (bash only) | 74.2% | — |
| Aider Polyglot | — | 60.4% |
| LMArena WebDev | 1440 | — |
| SWE-bench Multilingual | 68.7% | — |
| SciCode | — | 39.8% |
| LiveBench Coding | — | 82.7% |
| CadEval | — | 54% |
| ALE-Bench | 1,177 | — |
| AlgoTune | 1.83 | — |
Agentic & Tool Use Gemini 3 Pro leads
Gemini 3 Pro: 40.6 (#23), o3-mini: 29.6 (#84)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| Terminal-Bench | 69.4% | — |
| 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% | — |
| Cybench | — | 22.5% |
| DeepResearch Bench | 46.3% | — |
| BALROG | 58.1% | — |
| LMArena Search | 1207 | — |
| METR Time Horizons | 71% | — |
| Vending-Bench 2 | 5,478 | — |
Reasoning Gemini 3 Pro leads
Gemini 3 Pro: 52.5 (#31), o3-mini: 16.3 (#305)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| ARC-AGI-2 | 31.1% | 3% |
| SimpleBench | 76.4% | 22.8% |
| ARC-AGI-1 | 75% | 34.5% |
| CritPt | 6.9% | 0.3% |
| Chess Puzzles | 31% | 17% |
| LMArena Hard Prompts | 1480 | 1366 |
| Epoch Capabilities Index | 152.92 | 140.34 |
| ForecastBench | 61.2 | 59.6 |
| Kagi LLM Benchmark | 80.1% | — |
| NYT Connections (extended) | 94.4% | — |
| EnigmaEval | 18.2% | — |
| LiveBench Reasoning | — | 89.6% |
| Mystery Game Puzzles | — | 7% |
| DTBench | — | 68.8% |
| LiveBench Data Analysis | — | 70.6% |
| LMCA | — | 19% |
| LiveBench | — | 75.9% |
Math Gemini 3 Pro leads
Gemini 3 Pro: 49.9 (#59), o3-mini: 28.1 (#244)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 91.4% | 76.9% |
| LMArena Math | 1476 | 1396 |
| FrontierMath (Feb 2025 set) | 37.6% | 12.4% |
| FrontierMath Tier 4 (v1) | 18.8% | 4.2% |
| FrontierMath (Tiers 1-3) | — | 18.6% |
| FrontierMath Tier 4 | — | 0% |
| MathArena Final-Answer Competitions | 67% | — |
| ProofBench | 20% | — |
| Omni-MATH | 55.5% | — |
| LiveBench Math | — | 77.3% |
| MATH Level 5 | — | 96.5% |
Knowledge Gemini 3 Pro leads
Gemini 3 Pro: 64.4 (#16), o3-mini: 38.3 (#146)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| GPQA Diamond | 92.6% | 77% |
| LMArena Expert | 1475 | 1364 |
| Humanity's Last Exam | 37.5% | — |
| SimpleQA Verified | — | 15.3% |
| MMLU-Pro | 90.3% | — |
| Confabulations | — | 17.9% |
| Vectara Hallucination Rate | 13.6% | — |
| GPQA (HELM) | 80.3% | — |
Multimodal Not comparable
Gemini 3 Pro: 57.6 (#2), o3-mini: —
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| LMArena Vision | 1305 | — |
| GeoBench | 84% | — |
| VPCT | 91% | — |
| LMArena Document | 1434 | — |
Multilingual Gemini 3 Pro leads
Gemini 3 Pro: 56.9 (#16), o3-mini: 45.7 (#164)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| LMArena Non-English | 1474 | 1319 |
| LMArena Chinese | 1523 | 1379 |
| LMArena French | 1492 | 1334 |
| LMArena German | 1515 | 1303 |
| LMArena Japanese | 1510 | 1286 |
| LMArena Korean | 1448 | 1314 |
| LMArena Russian | 1493 | 1304 |
| LMArena Spanish | 1470 | 1321 |
Instruction Following Gemini 3 Pro leads
Gemini 3 Pro: 76.3 (#45), o3-mini: 75.1 (#72)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1458 | 1337 |
| LiveBench Instruction Following | — | 84.4% |
| IFEval | 87.7% | — |
Long Context Gemini 3 Pro leads
Gemini 3 Pro: 44.0 (#79), o3-mini: 33.8 (#256)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| LMArena Longer Query | 1471 | 1343 |
| Fiction.LiveBench | — | 50% |
| CL-bench | 15.8% | — |
Writing & Preference Gemini 3 Pro leads
Gemini 3 Pro: 66.4 (#35), o3-mini: 50.3 (#182)
| Benchmark | Gemini 3 Pro | o3-mini |
|---|---|---|
| LMArena Text | 1479 | 1337 |
| LMArena Creative Writing | 1482 | 1286 |
| LMArena Multi-Turn | 1484 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| EQ-Bench Creative Writing | 1525 | — |
| WildBench | 85.9% | — |
| LiveBench Language | — | 50.7% |
Frequently asked questions
Is Gemini 3 Pro better than o3-mini?
Gemini 3 Pro is the stronger model overall, scoring 54.8 to 36.7 on the Noometry Index.
Is Gemini 3 Pro or o3-mini better for coding?
Gemini 3 Pro scores higher on coding benchmarks: 51.6 versus 40.8 in the Noometry coding category.
How many benchmarks do Gemini 3 Pro and o3-mini share?
30 benchmarks have published results for both models. Gemini 3 Pro has 67 scored results on Noometry and o3-mini has 51.