# Phi 3 Mini 128k Instruct vs Yi-1.5-34B

> Yi-1.5-34B is the stronger model overall, scoring 30.2 to 29.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/phi-3-mini-128k-instruct-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Phi 3 Mini 128k Instruct scores higher in 2 categories and Yi-1.5-34B in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Phi 3 Mini 128k Instruct leads 26.3 to 14.8.

## Snapshot

| | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| Provider | Microsoft | 01.AI |
| Noometry Index | 29.1 | 30.2 |
| Rank | 303 | 286 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- Phi 3 Mini 128k Instruct: 28.3 (#307)
- Yi-1.5-34B: 31.9 (#267)

| Benchmark | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| BigCodeBench Instruct | 29.6% | 33.9% |
| LMArena Coding | 1040 | 1169 |
| BigCodeBench Complete | 40.6% | 43.8% |

## Reasoning

- Phi 3 Mini 128k Instruct: 18.7 (#254)
- Yi-1.5-34B: 21.5 (#195)

| Benchmark | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| LMArena Hard Prompts | 1028 | 1160 |

## Math

- Phi 3 Mini 128k Instruct: 29.2 (#220)
- Yi-1.5-34B: 25.3 (#248)

| Benchmark | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| LMArena Math | 1089 | 1182 |
| MATH Level 5 | — | 25.5% |

## Knowledge

- Phi 3 Mini 128k Instruct: 26.3 (#251)
- Yi-1.5-34B: 14.8 (#290)

| Benchmark | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| LMArena Expert | 984 | 1144 |
| GPQA Diamond | — | 32% |

## Multilingual

- Phi 3 Mini 128k Instruct: 25.4 (#280)
- Yi-1.5-34B: 32.5 (#251)

| Benchmark | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | 1000 | 1121 |
| LMArena Chinese | 1016 | 1213 |
| LMArena French | 1038 | 1155 |
| LMArena German | 1006 | 1111 |
| LMArena Japanese | 899 | 1021 |
| LMArena Korean | 856 | 1005 |
| LMArena Russian | 1004 | 1091 |
| LMArena Spanish | 1058 | 1120 |

## Instruction Following

- Phi 3 Mini 128k Instruct: 52.1 (#289)
- Yi-1.5-34B: 59.4 (#252)

| Benchmark | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | 1023 | 1139 |

## Long Context

- Phi 3 Mini 128k Instruct: 30.3 (#284)
- Yi-1.5-34B: 34.6 (#243)

| Benchmark | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | 996 | 1144 |

## Writing & Preference

- Phi 3 Mini 128k Instruct: 27.3 (#296)
- Yi-1.5-34B: 37.6 (#252)

| Benchmark | Phi 3 Mini 128k Instruct | Yi-1.5-34B |
|---|---|---|
| LMArena Text | 1050 | 1173 |
| LMArena Creative Writing | 1024 | 1135 |
| LMArena Multi-Turn | 989 | 1153 |

## FAQ

### Is Phi 3 Mini 128k Instruct better than Yi-1.5-34B?

Yi-1.5-34B is the stronger model overall, scoring 30.2 to 29.1 on the Noometry Index.

### Is Phi 3 Mini 128k Instruct or Yi-1.5-34B better for coding?

Yi-1.5-34B scores higher on coding benchmarks: 31.9 versus 28.3 in the Noometry coding category.

### How many benchmarks do Phi 3 Mini 128k Instruct and Yi-1.5-34B share?

19 benchmarks have published results for both models. Phi 3 Mini 128k Instruct has 19 scored results on Noometry and Yi-1.5-34B has 21.