# Gemini 3.1 Flash Lite vs Phi 3 Medium 4k Instruct

> Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.4 to 32.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-1-flash-lite-vs-phi-3-medium-4k-instruct
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Gemini 3.1 Flash Lite scores higher in 8 categories and Phi 3 Medium 4k Instruct in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Gemini 3.1 Flash Lite leads 61.0 to 34.3.
- Phi 3 Medium 4k Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| Provider | Google | Microsoft |
| Noometry Index | 40.4 | 32.4 |
| Rank | 141 | 246 |
| Context | 1.05M | — |
| Input $/M | $0.25 | — |
| Output $/M | $1.50 | — |
| Weights | Proprietary | Open |

## Coding

- Gemini 3.1 Flash Lite: 37.5 (#179)
- Phi 3 Medium 4k Instruct: 32.3 (#263)

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Coding | 1400 | 1130 |
| LMArena WebDev | 1256 | — |
| SciCode | 41.9% | — |
| WeirdML | 52.2% | — |
| ALE-Bench | 797.73 | — |

## Agentic & Tool Use

- Gemini 3.1 Flash Lite: 29.9 (#72)
- Phi 3 Medium 4k Instruct: —

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| DeepResearch Bench | 37.3% | — |

## Reasoning

- Gemini 3.1 Flash Lite: 22.3 (#181)
- Phi 3 Medium 4k Instruct: 20.8 (#214)

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1407 | 1127 |
| Kagi LLM Benchmark | 67.2% | — |
| NYT Connections (extended) | 8.2% | — |
| CritPt | 1.1% | — |
| Chess Puzzles | 25% | — |
| EnigmaEval | 3% | — |
| Thematic Generalization | 63.3% | — |
| DTBench | 76.8% | — |
| LMCA | 35% | — |
| Epoch Capabilities Index | 144.45 | — |
| ForecastBench | 54.4 | — |

## Math

- Gemini 3.1 Flash Lite: 39.5 (#82)
- Phi 3 Medium 4k Instruct: 30.9 (#202)

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Math | 1427 | 1173 |
| FrontierMath (Tiers 1-3) | 27.7% | — |
| OTIS Mock AIME 2024-2025 | 80% | — |

## Knowledge

- Gemini 3.1 Flash Lite: 41.7 (#95)
- Phi 3 Medium 4k Instruct: 29.6 (#226)

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Expert | 1397 | 1108 |
| GPQA Diamond | 81.8% | — |
| Humanity's Last Exam | 8.6% | — |
| Vectara Hallucination Rate | 8.2% | — |

## Multimodal

- Gemini 3.1 Flash Lite: 38.7 (#57)
- Phi 3 Medium 4k Instruct: —

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Vision | 1240 | — |

## Multilingual

- Gemini 3.1 Flash Lite: 52.5 (#82)
- Phi 3 Medium 4k Instruct: 30.8 (#258)

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Non-English | 1410 | 1094 |
| LMArena Chinese | 1461 | 1108 |
| LMArena French | 1423 | 1109 |
| LMArena German | 1429 | 1101 |
| LMArena Japanese | 1411 | 1042 |
| LMArena Korean | 1393 | 954 |
| LMArena Russian | 1420 | 1145 |
| LMArena Spanish | 1420 | 1095 |

## Instruction Following

- Gemini 3.1 Flash Lite: 72.9 (#126)
- Phi 3 Medium 4k Instruct: 57.8 (#263)

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Instruction Following | 1376 | 1114 |

## Long Context

- Gemini 3.1 Flash Lite: 42.5 (#117)
- Phi 3 Medium 4k Instruct: 33.9 (#250)

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Longer Query | 1394 | 1120 |

## Writing & Preference

- Gemini 3.1 Flash Lite: 61.0 (#90)
- Phi 3 Medium 4k Instruct: 34.3 (#267)

| Benchmark | Gemini 3.1 Flash Lite | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Text | 1416 | 1138 |
| LMArena Creative Writing | 1401 | 1106 |
| LMArena Multi-Turn | 1417 | 1088 |

## FAQ

### Is Gemini 3.1 Flash Lite better than Phi 3 Medium 4k Instruct?

Gemini 3.1 Flash Lite is the stronger model overall, scoring 40.4 to 32.4 on the Noometry Index.

### Is Gemini 3.1 Flash Lite or Phi 3 Medium 4k Instruct better for coding?

Gemini 3.1 Flash Lite scores higher on coding benchmarks: 37.5 versus 32.3 in the Noometry coding category.

### How many benchmarks do Gemini 3.1 Flash Lite and Phi 3 Medium 4k Instruct share?

17 benchmarks have published results for both models. Gemini 3.1 Flash Lite has 38 scored results on Noometry and Phi 3 Medium 4k Instruct has 17.