# Mistral Small 3.1 vs Phi 3 Medium 4k Instruct

> Phi 3 Medium 4k Instruct is the stronger model overall, scoring 32.4 to 31.4 on the Noometry Index.

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

## Summary

- They share 17 benchmarks with published results for both. Mistral Small 3.1 scores higher in 5 categories and Phi 3 Medium 4k Instruct in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Phi 3 Medium 4k Instruct leads 30.9 to 13.7.

## Snapshot

| | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| Provider | Mistral AI | Microsoft |
| Noometry Index | 31.4 | 32.4 |
| Rank | 263 | 246 |
| Context | 128K | — |
| Input $/M | $0.35 | — |
| Output $/M | $0.56 | — |
| Weights | Open | Open |

## Coding

- Mistral Small 3.1: 37.7 (#175)
- Phi 3 Medium 4k Instruct: 32.3 (#263)

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Coding | 1309 | 1130 |

## Reasoning

- Mistral Small 3.1: 18.9 (#249)
- Phi 3 Medium 4k Instruct: 20.8 (#214)

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1278 | 1127 |
| Chess Puzzles | 1% | — |
| Epoch Capabilities Index | 127.48 | — |

## Math

- Mistral Small 3.1: 13.7 (#295)
- Phi 3 Medium 4k Instruct: 30.9 (#202)

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Math | 1261 | 1173 |
| OTIS Mock AIME 2024-2025 | 3.9% | — |
| Omni-MATH | 24.8% | — |

## Knowledge

- Mistral Small 3.1: 22.6 (#266)
- Phi 3 Medium 4k Instruct: 29.6 (#226)

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Expert | 1258 | 1108 |
| GPQA Diamond | 41.9% | — |
| MMLU-Pro | 61% | — |
| GPQA (HELM) | 39.2% | — |

## Multimodal

- Mistral Small 3.1: 32.6 (#93)
- Phi 3 Medium 4k Instruct: —

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Vision | 1136 | — |

## Multilingual

- Mistral Small 3.1: 41.4 (#204)
- Phi 3 Medium 4k Instruct: 30.8 (#258)

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Non-English | 1255 | 1094 |
| LMArena Chinese | 1254 | 1108 |
| LMArena French | 1270 | 1109 |
| LMArena German | 1266 | 1101 |
| LMArena Japanese | 1210 | 1042 |
| LMArena Korean | 1206 | 954 |
| LMArena Russian | 1263 | 1145 |
| LMArena Spanish | 1283 | 1095 |

## Instruction Following

- Mistral Small 3.1: 63.8 (#225)
- Phi 3 Medium 4k Instruct: 57.8 (#263)

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Instruction Following | 1264 | 1114 |
| IFEval | 75% | — |

## Long Context

- Mistral Small 3.1: 39.5 (#172)
- Phi 3 Medium 4k Instruct: 33.9 (#250)

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Longer Query | 1300 | 1120 |

## Writing & Preference

- Mistral Small 3.1: 37.2 (#254)
- Phi 3 Medium 4k Instruct: 34.3 (#267)

| Benchmark | Mistral Small 3.1 | Phi 3 Medium 4k Instruct |
|---|---|---|
| LMArena Text | 1278 | 1138 |
| LMArena Creative Writing | 1253 | 1106 |
| LMArena Multi-Turn | 1270 | 1088 |
| EQ-Bench Creative Writing | 761 | — |
| WildBench | 78.8% | — |

## FAQ

### Is Mistral Small 3.1 better than Phi 3 Medium 4k Instruct?

Phi 3 Medium 4k Instruct is the stronger model overall, scoring 32.4 to 31.4 on the Noometry Index.

### Is Mistral Small 3.1 or Phi 3 Medium 4k Instruct better for coding?

Mistral Small 3.1 scores higher on coding benchmarks: 37.7 versus 32.3 in the Noometry coding category.

### How many benchmarks do Mistral Small 3.1 and Phi 3 Medium 4k Instruct share?

17 benchmarks have published results for both models. Mistral Small 3.1 has 28 scored results on Noometry and Phi 3 Medium 4k Instruct has 17.