# Gemini 3.1 Pro vs Granite 4.2 3B

> Side-by-side benchmark comparison for Gemini 3.1 Pro and Granite 4.2 3B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-pro-vs-granite-4-2-3b
- Last updated: September 10, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Gemini 3.1 Pro and Granite 4.2 3B.

## Summary

- Gemini 3.1 Pro and Granite 4.2 3B do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Gemini 3.1 Pro | Granite 4.2 3B |
|----------|----------|----------|
| Creator | Google | IBM |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 128K |
| Independent public score (not head-to-head) | 69.95 | null |
| Benchmarks Covered | 28 | 9 |
| Pricing (input/output) | $2.00 / $12.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 38.9 (Supported · #121/152)
- Granite 4.2 3B public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Granite 4.2 3B | 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 |
| τ³-bench results | Coming soon | 45.8% | Coming soon |
| BFCL v4 | Coming soon | 52.4% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 46.3 (Supported · #82/151)
- Granite 4.2 3B public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Granite 4.2 3B | 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 | 69.7% | Coming soon |
| SciCode | Coming soon | 24.1% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 79.2 (#12/48)
- Granite 4.2 3B public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Granite 4.2 3B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 83.9% | Coming soon | Coming soon |
| 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% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 50.6 (Unranked · 2 rankable rows)
- Granite 4.2 3B public-lane score: 37.7 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.1 Pro | Granite 4.2 3B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 77.1% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 66.1 (Supported · #21/183)
- Granite 4.2 3B public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Granite 4.2 3B | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 94.3% | Coming soon | Coming soon |
| HLE w/o tools | 45.4% | Coming soon | Coming soon |
| 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 | 54.8% | Coming soon |
| MMLU-Pro | Coming soon | 67.8% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: Coming soon
- Granite 4.2 3B public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Granite 4.2 3B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 74.3% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 54.3 (Unranked · 2 rankable rows)
- Granite 4.2 3B public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Granite 4.2 3B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 36.900% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 16.700% | Coming soon | Coming soon |
| AIME 2025 | Coming soon | 78.3% | Coming soon |
| HMMT Feb 2025 | Coming soon | 66.7% | Coming soon |

## FAQ

### Can I compare Gemini 3.1 Pro and Granite 4.2 3B on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Gemini 3.1 Pro vs Granite 4.2 8B](/compare/gemini-3-1-pro-vs-granite-4-2-8b)
- [Granite 4.2 3B vs Granite 4.2 8B](/compare/granite-4-2-3b-vs-granite-4-2-8b)
- [Gemini 3.1 Pro vs Granite 4.2 30B](/compare/gemini-3-1-pro-vs-granite-4-2-30b)
- [Granite 4.2 3B vs Granite 4.2 30B](/compare/granite-4-2-30b-vs-granite-4-2-3b)

## Explore More

- [Gemini 3.1 Pro profile](/models/gemini-3-1-pro)
- [Granite 4.2 3B profile](/models/granite-4-2-3b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)