# Mixtral 8x7B vs Phi 3 Small 8k Instruct

> Phi 3 Small 8k Instruct is the stronger model overall, scoring 29.3 to 27.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/mixtral-8x7b-vs-phi-3-small-8k-instruct
- Last updated: 2026-10-12
- Shared benchmarks: 24

## Summary

- They share 24 benchmarks with published results for both. Mixtral 8x7B scores higher in 5 categories and Phi 3 Small 8k Instruct in 3 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Phi 3 Small 8k Instruct leads 29.1 to 11.0.

## Snapshot

| | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| Provider | Mistral AI | Microsoft |
| Noometry Index | 27.1 | 29.3 |
| Rank | 334 | 314 |
| Context | 32K | — |
| Input $/M | $0.70 | — |
| Output $/M | $0.70 | — |
| Weights | Open | Open |

## Coding

- Mixtral 8x7B: 32.8 (#269)
- Phi 3 Small 8k Instruct: 27.9 (#318)

| Benchmark | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Coding | 1126 | 1101 |
| LiveBench Coding | — | 20.3% |
| HumanEval+ | 39.6% | — |
| MBPP+ | 49.7% | — |

## Reasoning

- Mixtral 8x7B: 18.2 (#285)
- Phi 3 Small 8k Instruct: 14.8 (#323)

| Benchmark | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1115 | 1100 |
| Adversarial NLI | 55.2% | 58.1% |
| HellaSwag | 86.7% | 77% |
| WinoGrande | 77.2% | 81.5% |
| LiveBench Reasoning | — | 15.9% |
| DTBench | 49.6% | — |
| LiveBench Data Analysis | — | 30.3% |
| BIG-Bench Hard | — | 79.1% |
| Epoch Capabilities Index | 118.47 | — |
| ForecastBench | 56.3 | — |
| LiveBench | — | 24% |
| PIQA | 83.6% | — |

## Math

- Mixtral 8x7B: 18.8 (#289)
- Phi 3 Small 8k Instruct: 27.6 (#248)

| Benchmark | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Math | 1147 | 1151 |
| Omni-MATH | 10.5% | — |
| LiveBench Math | — | 17.6% |
| MATH Level 5 | 10% | — |
| GSM8K | 74.4% | — |

## Knowledge

- Mixtral 8x7B: 11.0 (#301)
- Phi 3 Small 8k Instruct: 29.1 (#240)

| Benchmark | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Expert | 1088 | 1067 |
| ARC (AI2) Challenge | 87.3% | 90.7% |
| MMLU | 70.6% | 75.7% |
| OpenBookQA | 85.8% | 88% |
| TriviaQA | 82.2% | 58.1% |
| GPQA Diamond | 30.6% | — |
| MMLU-Pro | 33.5% | — |
| GPQA (HELM) | 29.6% | — |

## Multilingual

- Mixtral 8x7B: 29.6 (#266)
- Phi 3 Small 8k Instruct: 28.5 (#272)

| Benchmark | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Non-English | 1077 | 1058 |
| LMArena Chinese | 1055 | 1061 |
| LMArena French | 1166 | 1135 |
| LMArena German | 1114 | 1080 |
| LMArena Japanese | 931 | 966 |
| LMArena Korean | 968 | 894 |
| LMArena Russian | 1090 | 1111 |
| LMArena Spanish | 1111 | 1111 |

## Instruction Following

- Mixtral 8x7B: 51.0 (#297)
- Phi 3 Small 8k Instruct: 51.9 (#292)

| Benchmark | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Instruction Following | 1109 | 1087 |
| LiveBench Instruction Following | — | 47.2% |
| IFEval | 57.5% | — |

## Long Context

- Mixtral 8x7B: 33.4 (#260)
- Phi 3 Small 8k Instruct: 33.0 (#267)

| Benchmark | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Longer Query | 1103 | 1088 |

## Writing & Preference

- Mixtral 8x7B: 34.2 (#270)
- Phi 3 Small 8k Instruct: 31.1 (#284)

| Benchmark | Mixtral 8x7B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Text | 1132 | 1110 |
| LMArena Creative Writing | 1109 | 1083 |
| LMArena Multi-Turn | 1115 | 1068 |
| WildBench | 67.3% | — |
| LiveBench Language | — | 12.9% |

## FAQ

### Is Mixtral 8x7B better than Phi 3 Small 8k Instruct?

Phi 3 Small 8k Instruct is the stronger model overall, scoring 29.3 to 27.1 on the Noometry Index.

### Is Mixtral 8x7B or Phi 3 Small 8k Instruct better for coding?

Mixtral 8x7B scores higher on coding benchmarks: 32.8 versus 27.9 in the Noometry coding category.

### How many benchmarks do Mixtral 8x7B and Phi 3 Small 8k Instruct share?

24 benchmarks have published results for both models. Mixtral 8x7B has 38 scored results on Noometry and Phi 3 Small 8k Instruct has 32.