# Mixtral 8x22B 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-8x22b-vs-phi-3-small-8k-instruct
- Last updated: 2026-10-11
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Mixtral 8x22B scores higher in 5 categories and Phi 3 Small 8k Instruct in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Phi 3 Small 8k Instruct leads 29.1 to 15.1.

## Snapshot

| | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| Provider | Mistral AI | Microsoft |
| Noometry Index | 27.1 | 29.3 |
| Rank | 333 | 314 |
| Context | 64K | — |
| Input $/M | $2 | — |
| Output $/M | $6 | — |
| Weights | Open | Open |

## Coding

- Mixtral 8x22B: 24.2 (#329)
- Phi 3 Small 8k Instruct: 27.9 (#318)

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Coding | 1166 | 1101 |
| WeirdML | 3.2% | — |
| BigCodeBench Instruct | 40.6% | — |
| LiveBench Coding | — | 20.3% |
| BigCodeBench Complete | 50.2% | — |
| HumanEval+ | 72% | — |
| MBPP+ | 64.3% | — |

## Agentic & Tool Use

- Mixtral 8x22B: 23.1 (#127)
- Phi 3 Small 8k Instruct: —

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| Cybench | 7.5% | — |

## Reasoning

- Mixtral 8x22B: 19.9 (#248)
- Phi 3 Small 8k Instruct: 14.8 (#323)

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1150 | 1100 |
| LiveBench Reasoning | — | 15.9% |
| DTBench | 55.1% | — |
| LiveBench Data Analysis | — | 30.3% |
| Adversarial NLI | — | 58.1% |
| BIG-Bench Hard | — | 79.1% |
| Epoch Capabilities Index | 122.03 | — |
| ForecastBench | 56.3 | — |
| HellaSwag | — | 77% |
| LiveBench | — | 24% |
| WinoGrande | — | 81.5% |

## Math

- Mixtral 8x22B: 22.9 (#275)
- Phi 3 Small 8k Instruct: 27.6 (#248)

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Math | 1184 | 1151 |
| Omni-MATH | 16.3% | — |
| LiveBench Math | — | 17.6% |
| MATH Level 5 | 24.2% | — |

## Knowledge

- Mixtral 8x22B: 15.1 (#293)
- Phi 3 Small 8k Instruct: 29.1 (#240)

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Expert | 1113 | 1067 |
| MMLU | 77.8% | 75.7% |
| GPQA Diamond | 34.1% | — |
| MMLU-Pro | 46% | — |
| GPQA (HELM) | 33.4% | — |
| ARC (AI2) Challenge | — | 90.7% |
| OpenBookQA | — | 88% |
| TriviaQA | — | 58.1% |

## Multilingual

- Mixtral 8x22B: 32.8 (#255)
- Phi 3 Small 8k Instruct: 28.5 (#272)

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Non-English | 1128 | 1058 |
| LMArena Chinese | 1116 | 1061 |
| LMArena French | 1166 | 1135 |
| LMArena German | 1141 | 1080 |
| LMArena Japanese | 1037 | 966 |
| LMArena Korean | 1057 | 894 |
| LMArena Russian | 1158 | 1111 |
| LMArena Spanish | 1151 | 1111 |

## Instruction Following

- Mixtral 8x22B: 57.7 (#266)
- Phi 3 Small 8k Instruct: 51.9 (#292)

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Instruction Following | 1147 | 1087 |
| LiveBench Instruction Following | — | 47.2% |
| IFEval | 72.4% | — |

## Long Context

- Mixtral 8x22B: 34.7 (#247)
- Phi 3 Small 8k Instruct: 33.0 (#267)

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Longer Query | 1144 | 1088 |

## Writing & Preference

- Mixtral 8x22B: 36.9 (#262)
- Phi 3 Small 8k Instruct: 31.1 (#284)

| Benchmark | Mixtral 8x22B | Phi 3 Small 8k Instruct |
|---|---|---|
| LMArena Text | 1162 | 1110 |
| LMArena Creative Writing | 1141 | 1083 |
| LMArena Multi-Turn | 1130 | 1068 |
| WildBench | 71.1% | — |
| LiveBench Language | — | 12.9% |

## FAQ

### Is Mixtral 8x22B 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 8x22B or Phi 3 Small 8k Instruct better for coding?

Phi 3 Small 8k Instruct scores higher on coding benchmarks: 27.9 versus 24.2 in the Noometry coding category.

### How many benchmarks do Mixtral 8x22B and Phi 3 Small 8k Instruct share?

18 benchmarks have published results for both models. Mixtral 8x22B has 34 scored results on Noometry and Phi 3 Small 8k Instruct has 32.