# Mistral Small 3.1 vs StarCoder 2 15B

> Mistral Small 3.1 has enough public results to be ranked (#263); StarCoder 2 15B does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/mistral-small-3-1-vs-starcoder-2-15b
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Mistral Small 3.1 scores higher in 1 category and StarCoder 2 15B in 0 categories; one gap is clear of the uncertainty.

## Snapshot

| | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| Provider | Mistral AI | NVIDIA |
| Noometry Index | 31.4 | 37.5 |
| Rank | 263 | — |
| Context | 128K | — |
| Input $/M | $0.35 | — |
| Output $/M | $0.56 | — |
| Weights | Open | Open |

## Coding

- Mistral Small 3.1: 37.7 (#175)
- StarCoder 2 15B: 36.0

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| LMArena Coding | 1309 | — |
| BigCodeBench Complete | — | 38.4% |
| HumanEval+ | — | 37.8% |

## Reasoning

- Mistral Small 3.1: 18.9 (#249)
- StarCoder 2 15B: —

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| Epoch Capabilities Index | 127.48 | 104.61 |
| Chess Puzzles | 1% | — |
| LMArena Hard Prompts | 1278 | — |
| WinoGrande | — | 64.3% |

## Math

- Mistral Small 3.1: 13.7 (#295)
- StarCoder 2 15B: —

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 3.9% | — |
| Omni-MATH | 24.8% | — |
| LMArena Math | 1261 | — |
| GSM8K | — | 57.7% |

## Knowledge

- Mistral Small 3.1: 22.6 (#266)
- StarCoder 2 15B: —

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| GPQA Diamond | 41.9% | — |
| MMLU-Pro | 61% | — |
| GPQA (HELM) | 39.2% | — |
| LMArena Expert | 1258 | — |
| ARC (AI2) Challenge | — | 47.2% |
| MMLU | — | 64.1% |

## Multimodal

- Mistral Small 3.1: 32.6 (#93)
- StarCoder 2 15B: —

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| LMArena Vision | 1136 | — |

## Multilingual

- Mistral Small 3.1: 41.4 (#204)
- StarCoder 2 15B: —

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| LMArena Non-English | 1255 | — |
| LMArena Chinese | 1254 | — |
| LMArena French | 1270 | — |
| LMArena German | 1266 | — |
| LMArena Japanese | 1210 | — |
| LMArena Korean | 1206 | — |
| LMArena Russian | 1263 | — |
| LMArena Spanish | 1283 | — |

## Instruction Following

- Mistral Small 3.1: 63.8 (#225)
- StarCoder 2 15B: —

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| IFEval | 75% | — |
| LMArena Instruction Following | 1264 | — |

## Long Context

- Mistral Small 3.1: 39.5 (#172)
- StarCoder 2 15B: —

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| LMArena Longer Query | 1300 | — |

## Writing & Preference

- Mistral Small 3.1: 37.2 (#254)
- StarCoder 2 15B: —

| Benchmark | Mistral Small 3.1 | StarCoder 2 15B |
|---|---|---|
| LMArena Text | 1278 | — |
| LMArena Creative Writing | 1253 | — |
| EQ-Bench Creative Writing | 761 | — |
| WildBench | 78.8% | — |
| LMArena Multi-Turn | 1270 | — |

## FAQ

### Is Mistral Small 3.1 better than StarCoder 2 15B?

Mistral Small 3.1 has enough public results to be ranked (#263); StarCoder 2 15B does not yet, so treat this comparison as directional.

### Is Mistral Small 3.1 or StarCoder 2 15B better for coding?

Mistral Small 3.1 scores higher on coding benchmarks: 37.7 versus 36.0 in the Noometry coding category.

### How many benchmarks do Mistral Small 3.1 and StarCoder 2 15B share?

1 benchmark has published results for both models. Mistral Small 3.1 has 28 scored results on Noometry and StarCoder 2 15B has 7.