Model comparison
Gemini 2.5 Pro vs Gemma 3 12B
Gemini 2.5 Pro is the stronger model overall, scoring 44.9 to 31.8 on the Noometry Index. Gemma 3 12B costs 46× less per token, which makes it the better buy when Gemini 2.5 Pro's lead doesn't matter for your workload.
Last verified . 22 shared benchmarks.
GoogleSummary
- They share 22 benchmarks with published results for both. Gemini 2.5 Pro scores higher in 9 categories and Gemma 3 12B in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Gemini 2.5 Pro leads 55.8 to 26.5.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 84.7% for Gemini 2.5 Pro and 16.7% for Gemma 3 12B.
- Gemma 3 12B is cheaper at $0.05 / $0.15 per million input/output tokens, against $1.25 / $10 for Gemini 2.5 Pro.
- Gemini 2.5 Pro accepts more context: 1.05M tokens versus 131K.
- Gemma 3 12B has downloadable open weights; the other is API-only.
Side by side
| Gemini 2.5 Pro | Gemma 3 12B | |
|---|---|---|
| Provider | ||
| Noometry Index | 44.9 | 31.8 |
| Released | 2025-03-25 | 2025-03-12 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 131K |
| Max output | 66K | 8K |
| Input $ / M tokens | $1.25 | $0.05 |
| Output $ / M tokens | $10 | $0.15 |
| Results tracked | 78 | 24 |
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Category by category
Coding Gemini 2.5 Pro leads
Gemini 2.5 Pro: 42.8 (#86), Gemma 3 12B: 31.2 (#276)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| SciCode | 42.8% | 17.4% |
| LMArena Coding | 1452 | 1281 |
| SWE-bench Verified | 57.6% | — |
| SWE-bench Verified (bash only) | 53.6% | — |
| Aider Polyglot | 83.1% | — |
| LMArena WebDev | 1227 | — |
| GSO | 3.9% | — |
| WeirdML | 54% | — |
| LiveBench Coding | 85.9% | — |
| CadEval | 64% | — |
| ALE-Bench | 785.52 | — |
| AlgoTune | 1.51 | — |
Agentic & Tool Use Gemini 2.5 Pro leads
Gemini 2.5 Pro: 29.1 (#81), Gemma 3 12B: 25.3 (#101)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| Terminal-Bench | 32.6% | — |
| Berkeley Function Calling Leaderboard | — | 30.4% |
| GDPval | 23.3% | — |
| Remote Labor Index | 0.8% | — |
| TheAgentCompany | 30.3% | — |
| τ²-bench Banking | 13.7% | — |
| DeepResearch Bench | 42.8% | — |
| BALROG | 43.3% | — |
| LMArena Search | 1142 | — |
| METR Time Horizons | 55.4% | — |
| Vending-Bench 2 | 573.64 | — |
Reasoning Gemini 2.5 Pro leads
Gemini 2.5 Pro: 28.8 (#85), Gemma 3 12B: 15.2 (#307)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| CritPt | 2% | 0% |
| Chess Puzzles | 20% | 0% |
| LMArena Hard Prompts | 1455 | 1309 |
| DTBench | 82.4% | 48.8% |
| LMCA | 34.8% | 4.5% |
| Epoch Capabilities Index | 145.32 | 123.49 |
| ARC-AGI-2 | 4.9% | — |
| SimpleBench | 62.4% | — |
| Kagi LLM Benchmark | 70.3% | — |
| ARC-AGI-1 | 41% | — |
| EnigmaEval | 5.6% | — |
| LiveBench Reasoning | 89.8% | — |
| LiveBench Data Analysis | 79.9% | — |
| ForecastBench | 61.3 | — |
| LiveBench | 82.3% | — |
Math Gemini 2.5 Pro leads
Gemini 2.5 Pro: 31.9 (#191), Gemma 3 12B: 21.0 (#273)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 84.7% | 16.7% |
| LMArena Math | 1450 | 1307 |
| FrontierMath (Tiers 1-3) | 24.6% | — |
| FrontierMath Tier 4 | 0% | — |
| Omni-MATH | 41.6% | — |
| LiveBench Math | 90.2% | — |
| MATH Level 5 | 95.9% | — |
| FrontierMath (Feb 2025 set) | 14.1% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Gemini 2.5 Pro leads
Gemini 2.5 Pro: 55.8 (#41), Gemma 3 12B: 26.5 (#250)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| GPQA Diamond | 85.3% | 39.5% |
| Vectara Hallucination Rate | 7% | 4.4% |
| LMArena Expert | 1452 | 1248 |
| Humanity's Last Exam | 21.6% | — |
| MMLU-Pro | 86.3% | — |
| Confabulations | 10.6% | — |
| GPQA (HELM) | 74.9% | — |
Multimodal Not comparable
Gemini 2.5 Pro: 44.5 (#16), Gemma 3 12B: —
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| LMArena Vision | 1263 | — |
| GeoBench | 86% | — |
| VPCT | 48% | — |
| LMArena Document | 1421 | — |
| MindCube | — | 46.7% |
| SpatialViz-Bench | 44.7% | — |
Multilingual Gemini 2.5 Pro leads
Gemini 2.5 Pro: 55.5 (#30), Gemma 3 12B: 45.9 (#160)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| LMArena Non-English | 1452 | 1318 |
| LMArena German | 1487 | 1370 |
| LMArena Russian | 1460 | 1335 |
| LMArena Chinese | 1507 | — |
| LMArena French | 1473 | — |
| LMArena Japanese | 1462 | — |
| LMArena Korean | 1435 | — |
| LMArena Spanish | 1473 | — |
Instruction Following Gemini 2.5 Pro leads
Gemini 2.5 Pro: 75.2 (#71), Gemma 3 12B: 68.8 (#179)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| LMArena Instruction Following | 1436 | 1299 |
| LiveBench Instruction Following | 80.6% | — |
| IFEval | 84% | — |
Long Context Gemini 2.5 Pro leads
Gemini 2.5 Pro: 59.7 (#5), Gemma 3 12B: 40.0 (#157)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| LMArena Longer Query | 1449 | 1317 |
| Fiction.LiveBench | 91.7% | — |
Writing & Preference Gemini 2.5 Pro leads
Gemini 2.5 Pro: 63.9 (#60), Gemma 3 12B: 47.7 (#205)
| Benchmark | Gemini 2.5 Pro | Gemma 3 12B |
|---|---|---|
| LMArena Text | 1458 | 1334 |
| LMArena Creative Writing | 1453 | 1331 |
| EQ-Bench Creative Writing | 1421 | 1126 |
| LMArena Multi-Turn | 1453 | 1334 |
| Short-Story Creative Writing | 83.8% | — |
| WildBench | 85.7% | — |
| LiveBench Language | 67.8% | — |
Frequently asked questions
Is Gemini 2.5 Pro better than Gemma 3 12B?
Gemini 2.5 Pro is the stronger model overall, scoring 44.9 to 31.8 on the Noometry Index. Gemma 3 12B costs 46× less per token, which makes it the better buy when Gemini 2.5 Pro's lead doesn't matter for your workload.
Which is cheaper, Gemini 2.5 Pro or Gemma 3 12B?
Gemma 3 12B is cheaper. It lists at $0.05 per million input tokens and $0.15 per million output tokens; Gemini 2.5 Pro lists at $1.25 and $10.
Is Gemini 2.5 Pro or Gemma 3 12B better for coding?
Gemini 2.5 Pro scores higher on coding benchmarks: 42.8 versus 31.2 in the Noometry coding category.
Which has the bigger context window?
Gemini 2.5 Pro does, with 1.05M tokens against 131K.
How many benchmarks do Gemini 2.5 Pro and Gemma 3 12B share?
22 benchmarks have published results for both models. Gemini 2.5 Pro has 78 scored results on Noometry and Gemma 3 12B has 24.