# Gemini 3.1 Pro Preview vs phi-3-medium 14B

> Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 29.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-1-pro-preview-vs-phi-3-medium-14b
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 3 categories and phi-3-medium 14B in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Gemini 3.1 Pro Preview leads 71.8 to 9.1.
- The biggest single-benchmark swing is GPQA Diamond: 94.4% for Gemini 3.1 Pro Preview and 27.6% for phi-3-medium 14B.
- phi-3-medium 14B has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| Provider | Google | Microsoft |
| Noometry Index | 56.7 | 29.7 |
| Rank | 23 | 306 |
| Context | 1.05M | — |
| Input $/M | $2 | — |
| Output $/M | $12 | — |
| Weights | Proprietary | Open |

## Coding

- Gemini 3.1 Pro Preview: 42.5 (#99)
- phi-3-medium 14B: 36.8 (#201)

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| SWE-bench Verified | 75.6% | — |
| DeepSWE | 11.7% | — |
| LMArena WebDev | 1447 | — |
| SciCode | 58.9% | — |
| GSO | 22.6% | — |
| WeirdML | 72.1% | — |
| BigCodeBench Instruct | — | 37.6% |
| LMArena Coding | 1484 | — |
| MirrorCode | 8.9% | — |
| BigCodeBench Complete | — | 48.7% |
| ALE-Bench | 1,161 | — |
| AlgoTune | 2.02 | — |

## Agentic & Tool Use

- Gemini 3.1 Pro Preview: 37.7 (#34)
- phi-3-medium 14B: —

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| Terminal-Bench | 80.2% | — |
| APEX-Agents | 35.3% | — |
| τ²-bench Banking | 26% | — |
| DeepResearch Bench | 47.8% | — |
| PostTrainBench | 22% | — |
| BALROG | 57% | — |
| 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: 71.7 (#12)
- phi-3-medium 14B: —

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| Epoch Capabilities Index | 154.77 | 121.23 |
| ARC-AGI-2 | 77.1% | — |
| SimpleBench | 79.6% | — |
| NYT Connections (extended) | 97.4% | — |
| ARC-AGI-1 | 98% | — |
| CritPt | 17.7% | — |
| Chess Puzzles | 55% | — |
| EnigmaEval | 36.8% | — |
| Thematic Generalization | 79.4% | — |
| EBR-Bench | 14.3% | — |
| LMArena Hard Prompts | 1485 | — |
| Mystery Game Puzzles | 34% | — |
| DTBench | 97.1% | — |
| LMCA | 53.8% | — |
| Adversarial NLI | — | 55.8% |
| BIG-Bench Hard | — | 81.4% |
| ForecastBench | 59 | — |
| HellaSwag | — | 82.4% |
| WinoGrande | — | 81.5% |

## Math

- Gemini 3.1 Pro Preview: 62.1 (#34)
- phi-3-medium 14B: 27.3 (#250)

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 59.6% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 86.5% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| ProofBench | 26% | — |
| LMArena Math | 1485 | — |
| MATH Level 5 | — | 17.6% |
| FrontierMath (Feb 2025 set) | 36.9% | — |
| FrontierMath Tier 4 (v1) | 16.7% | — |

## Knowledge

- Gemini 3.1 Pro Preview: 71.8 (#3)
- phi-3-medium 14B: 9.1 (#306)

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| GPQA Diamond | 94.4% | 27.6% |
| Humanity's Last Exam | 46.4% | — |
| SimpleQA Verified | 73.5% | — |
| Vectara Hallucination Rate | 10.4% | — |
| LMArena Expert | 1485 | — |
| ARC (AI2) Challenge | — | 91.6% |
| MMLU | — | 78% |
| OpenBookQA | — | 87.4% |
| TriviaQA | — | 73.9% |

## Multimodal

- Gemini 3.1 Pro Preview: 37.9 (#69)
- phi-3-medium 14B: —

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| LMArena Vision | 1296 | — |
| Blueprint-Bench 2 | 26.5% | — |
| Furniture Assembly | 26.7% | — |
| LMArena Document | 1444 | — |

## Multilingual

- Gemini 3.1 Pro Preview: 57.0 (#12)
- phi-3-medium 14B: —

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| LMArena Non-English | 1477 | — |
| LMArena Chinese | 1529 | — |
| LMArena French | 1487 | — |
| LMArena German | 1491 | — |
| LMArena Japanese | 1493 | — |
| LMArena Korean | 1455 | — |
| LMArena Russian | 1498 | — |
| LMArena Spanish | 1479 | — |

## Instruction Following

- Gemini 3.1 Pro Preview: 77.0 (#32)
- phi-3-medium 14B: —

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| LMArena Instruction Following | 1466 | — |

## Long Context

- Gemini 3.1 Pro Preview: 47.4 (#18)
- phi-3-medium 14B: —

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| CL-bench | 20.8% | — |
| CL-bench Life | 16.9% | — |
| LMArena Longer Query | 1483 | — |

## Writing & Preference

- Gemini 3.1 Pro Preview: 66.1 (#37)
- phi-3-medium 14B: —

| Benchmark | Gemini 3.1 Pro Preview | phi-3-medium 14B |
|---|---|---|
| LMArena Text | 1481 | — |
| LMArena Creative Writing | 1482 | — |
| EQ-Bench Creative Writing | 1491 | — |
| EQ-Bench 4 | 1142 | — |
| LMArena Multi-Turn | 1488 | — |

## FAQ

### Is Gemini 3.1 Pro Preview better than phi-3-medium 14B?

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 29.7 on the Noometry Index.

### Is Gemini 3.1 Pro Preview or phi-3-medium 14B better for coding?

Gemini 3.1 Pro Preview scores higher on coding benchmarks: 42.5 versus 36.8 in the Noometry coding category.

### How many benchmarks do Gemini 3.1 Pro Preview and phi-3-medium 14B share?

2 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and phi-3-medium 14B has 13.