# Gemini 3.1 Pro vs Gemma 4 12B

> Side-by-side benchmark comparison for Gemini 3.1 Pro and Gemma 4 12B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-pro-vs-gemma-4-12b
- Last updated: September 4, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Gemini 3.1 Pro if you want the stronger benchmark profile. Gemma 4 12B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3.1 Pro leads overall 69.82 to 46.64.
- The clearest category separation is in multimodal & grounded, where the averages are 79.2 for Gemini 3.1 Pro and 26.1 for Gemma 4 12B.
- The biggest single benchmark swing is HLE w/o tools in Knowledge, with scores of 45.4% and 5.2%.
- Gemini 3.1 Pro also has the larger context window at 1M.

## Model Snapshot

| Property | Gemini 3.1 Pro | Gemma 4 12B |
|----------|----------|----------|
| Creator | Google | Google |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Overall Score | 69.82 | 46.64 |
| Benchmarks Covered | 28 | 12 |
| Pricing (input/output) | $2.00 / $12.00 | N/A |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: 40.1 (Supported · #120/151)
- Gemma 4 12B public-lane score: 47.9 (Estimated · #81/151)

| Benchmark | Gemini 3.1 Pro | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| Claw-Eval | 57.8% | Coming soon | Coming soon |
| DeepSearchQA | 69.7% | Coming soon | Coming soon |
| τ²-bench results | 95.6% | Coming soon | Coming soon |
| Gert Labs | 56.87% | Coming soon | Coming soon |
| ResearchClawBench | 13.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 70.8% | Coming soon | Coming soon |

### Coding

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: 46.3 (Supported · #99/183)
- Gemma 4 12B public-lane score: 46.6 (Estimated · #97/183)

| Benchmark | Gemini 3.1 Pro | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 82.9% | Coming soon | Coming soon |
| React Native Evals | 78.9% | Coming soon | Coming soon |
| Vibe Code Bench | 32.03% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 88.5% | Coming soon | Coming soon |
| SWE-bench (Vals) | 78.8% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 72.0% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: 79.2 (#12/48)
- Gemma 4 12B public-lane score: 26.1 (#44/48)

| Benchmark | Gemini 3.1 Pro | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 83.9% | 69.1% | Gemini 3.1 Pro |
| CharXiv | 80.2% | Coming soon | Coming soon |
| ERQA | 69.4% | Coming soon | Coming soon |
| SimpleVQA | 72.4% | Coming soon | Coming soon |
| ScreenSpot Pro | 84.4% | Coming soon | Coming soon |
| ZeroBench | 29.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 81.3% | 48.7% | Gemini 3.1 Pro |
| MathVision | Coming soon | 79.7% | Coming soon |

### Reasoning

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: 50.7 (Unranked · 2 rankable rows)
- Gemma 4 12B public-lane score: 34 (Unranked · 4 rankable rows)

| Benchmark | Gemini 3.1 Pro | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 77.1% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.4% | Coming soon | Coming soon |
| BBH | Coming soon | 53% | Coming soon |
| MRCRv2 | Coming soon | 43.4% | Coming soon |

### Knowledge

- Winner: Gemini 3.1 Pro
- Gemini 3.1 Pro public-lane score: 65.6 (Supported · #24/181)
- Gemma 4 12B public-lane score: 40.4 (Supported · #138/181)

| Benchmark | Gemini 3.1 Pro | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 94.3% | 78.8% | Gemini 3.1 Pro |
| HLE w/o tools | 45.4% | 5.2% | Gemini 3.1 Pro |
| HealthBench Hard | 20.6% | Coming soon | Coming soon |
| MedXpertQA (Text) | 71.5% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 95.5% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 91.0% | Coming soon | Coming soon |
| GPQA | Coming soon | 78.8% | Coming soon |
| MMLU-Pro | Coming soon | 77.2% | Coming soon |
| MMMLU | Coming soon | 83.4% | Coming soon |

### Instruction Following

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: Coming soon
- Gemma 4 12B public-lane score: 89.8 (#21/120)

### Mathematics

- Winner: Coming soon
- Gemini 3.1 Pro public-lane score: 54.3 (Unranked · 2 rankable rows)
- Gemma 4 12B public-lane score: 57.6 (Unranked · 1 rankable row)

| Benchmark | Gemini 3.1 Pro | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 36.900% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 16.700% | Coming soon | Coming soon |
| AIME26 | Coming soon | 77.5% | Coming soon |

## FAQ

### Which is better overall, Gemini 3.1 Pro or Gemma 4 12B?

Gemini 3.1 Pro is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.1 Pro and Gemma 4 12B?

The widest category gap is in multimodal & grounded, where the averages are 79.2 for Gemini 3.1 Pro and 26.1 for Gemma 4 12B.

### How many benchmarks does Gemini 3.1 Pro cover on BenchLM?

Gemini 3.1 Pro currently has 28 sourced benchmark scores on BenchLM.

### How many benchmarks does Gemma 4 12B cover on BenchLM?

Gemma 4 12B currently has 12 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.1 Pro vs Gemma 4 31B](/compare/gemini-3-1-pro-vs-gemma-4-31b)
- [Gemma 4 12B vs Gemma 4 31B](/compare/gemma-4-12b-vs-gemma-4-31b)
- [Gemini 3.1 Pro vs Gemma 4 26B A4B](/compare/gemini-3-1-pro-vs-gemma-4-26b-a4b)
- [Gemma 4 12B vs Gemma 4 26B A4B](/compare/gemma-4-12b-vs-gemma-4-26b-a4b)

## Explore More

- [Gemini 3.1 Pro profile](/models/gemini-3-1-pro)
- [Gemma 4 12B profile](/models/gemma-4-12b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)