# Phi-3.5-mini vs Phi 3 Mini 128k Instruct

> Phi 3 Mini 128k Instruct has enough public results to be ranked (#303); Phi-3.5-mini does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/phi-3-5-mini-vs-phi-3-mini-128k-instruct
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Phi-3.5-mini scores higher in 1 category and Phi 3 Mini 128k Instruct in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in coding, where Phi-3.5-mini leads 34.0 to 28.3.

## Snapshot

| | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| Provider | Microsoft | Microsoft |
| Noometry Index | 36.4 | 29.1 |
| Rank | — | 303 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- Phi-3.5-mini: 34.0 (#231)
- Phi 3 Mini 128k Instruct: 28.3 (#307)

| Benchmark | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| BigCodeBench Instruct | 32.8% | 29.6% |
| BigCodeBench Complete | 38.5% | 40.6% |
| LMArena Coding | — | 1040 |

## Reasoning

- Phi-3.5-mini: —
- Phi 3 Mini 128k Instruct: 18.7 (#254)

| Benchmark | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Hard Prompts | — | 1028 |
| PIQA | 81% | — |

## Math

- Phi-3.5-mini: —
- Phi 3 Mini 128k Instruct: 29.2 (#220)

| Benchmark | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Math | — | 1089 |
| GSM8K | 86.2% | — |

## Knowledge

- Phi-3.5-mini: —
- Phi 3 Mini 128k Instruct: 26.3 (#251)

| Benchmark | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Expert | — | 984 |
| BoolQ | 78% | — |

## Multilingual

- Phi-3.5-mini: —
- Phi 3 Mini 128k Instruct: 25.4 (#280)

| Benchmark | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| 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-3.5-mini: —
- Phi 3 Mini 128k Instruct: 52.1 (#289)

| Benchmark | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Instruction Following | — | 1023 |

## Long Context

- Phi-3.5-mini: —
- Phi 3 Mini 128k Instruct: 30.3 (#284)

| Benchmark | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Longer Query | — | 996 |

## Writing & Preference

- Phi-3.5-mini: —
- Phi 3 Mini 128k Instruct: 27.3 (#296)

| Benchmark | Phi-3.5-mini | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Text | — | 1050 |
| LMArena Creative Writing | — | 1024 |
| LMArena Multi-Turn | — | 989 |

## FAQ

### Is Phi-3.5-mini better than Phi 3 Mini 128k Instruct?

Phi 3 Mini 128k Instruct has enough public results to be ranked (#303); Phi-3.5-mini does not yet, so treat this comparison as directional.

### Is Phi-3.5-mini or Phi 3 Mini 128k Instruct better for coding?

Phi-3.5-mini scores higher on coding benchmarks: 34.0 versus 28.3 in the Noometry coding category.

### How many benchmarks do Phi-3.5-mini and Phi 3 Mini 128k Instruct share?

2 benchmarks have published results for both models. Phi-3.5-mini has 5 scored results on Noometry and Phi 3 Mini 128k Instruct has 19.