# Phi 3 Mini 128k Instruct vs StarCoder 2 15B

> Phi 3 Mini 128k Instruct has enough public results to be ranked (#303); StarCoder 2 15B does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/phi-3-mini-128k-instruct-vs-starcoder-2-15b
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Phi 3 Mini 128k Instruct scores higher in 0 categories and StarCoder 2 15B in 1 category; one gap is clear of the uncertainty.
- The widest gap is in coding, where StarCoder 2 15B leads 36.0 to 28.3.

## Snapshot

| | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| Provider | Microsoft | NVIDIA |
| Noometry Index | 29.1 | 37.5 |
| Rank | 303 | — |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- Phi 3 Mini 128k Instruct: 28.3 (#307)
- StarCoder 2 15B: 36.0

| Benchmark | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| BigCodeBench Complete | 40.6% | 38.4% |
| BigCodeBench Instruct | 29.6% | — |
| LMArena Coding | 1040 | — |
| HumanEval+ | — | 37.8% |

## Reasoning

- Phi 3 Mini 128k Instruct: 18.7 (#254)
- StarCoder 2 15B: —

| Benchmark | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| LMArena Hard Prompts | 1028 | — |
| Epoch Capabilities Index | — | 104.61 |
| WinoGrande | — | 64.3% |

## Math

- Phi 3 Mini 128k Instruct: 29.2 (#220)
- StarCoder 2 15B: —

| Benchmark | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| LMArena Math | 1089 | — |
| GSM8K | — | 57.7% |

## Knowledge

- Phi 3 Mini 128k Instruct: 26.3 (#251)
- StarCoder 2 15B: —

| Benchmark | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| LMArena Expert | 984 | — |
| ARC (AI2) Challenge | — | 47.2% |
| MMLU | — | 64.1% |

## Multilingual

- Phi 3 Mini 128k Instruct: 25.4 (#280)
- StarCoder 2 15B: —

| Benchmark | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| LMArena Non-English | 1000 | — |
| LMArena Chinese | 1016 | — |
| LMArena French | 1038 | — |
| LMArena German | 1006 | — |
| LMArena Japanese | 899 | — |
| LMArena Korean | 856 | — |
| LMArena Russian | 1004 | — |
| LMArena Spanish | 1058 | — |

## Instruction Following

- Phi 3 Mini 128k Instruct: 52.1 (#289)
- StarCoder 2 15B: —

| Benchmark | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| LMArena Instruction Following | 1023 | — |

## Long Context

- Phi 3 Mini 128k Instruct: 30.3 (#284)
- StarCoder 2 15B: —

| Benchmark | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| LMArena Longer Query | 996 | — |

## Writing & Preference

- Phi 3 Mini 128k Instruct: 27.3 (#296)
- StarCoder 2 15B: —

| Benchmark | Phi 3 Mini 128k Instruct | StarCoder 2 15B |
|---|---|---|
| LMArena Text | 1050 | — |
| LMArena Creative Writing | 1024 | — |
| LMArena Multi-Turn | 989 | — |

## FAQ

### Is Phi 3 Mini 128k Instruct better than StarCoder 2 15B?

Phi 3 Mini 128k Instruct has enough public results to be ranked (#303); StarCoder 2 15B does not yet, so treat this comparison as directional.

### Is Phi 3 Mini 128k Instruct or StarCoder 2 15B better for coding?

StarCoder 2 15B scores higher on coding benchmarks: 36.0 versus 28.3 in the Noometry coding category.

### How many benchmarks do Phi 3 Mini 128k Instruct and StarCoder 2 15B share?

1 benchmark has published results for both models. Phi 3 Mini 128k Instruct has 19 scored results on Noometry and StarCoder 2 15B has 7.