# Gemma 2 27B vs Yi-Lightning

> Yi-Lightning is the stronger model overall, scoring 37.1 to 29.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemma-2-27b-vs-yi-lightning
- Last updated: 2026-10-11
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Gemma 2 27B scores higher in 1 category and Yi-Lightning in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Yi-Lightning leads 36.2 to 10.7.
- Gemma 2 27B has downloadable open weights; the other is API-only.

## Snapshot

| | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| Provider | Google | 01.AI |
| Noometry Index | 29.4 | 37.1 |
| Rank | 312 | 209 |
| Context | 8K | — |
| Input $/M | $0.65 | — |
| Output $/M | $0.65 | — |
| Weights | Open | Proprietary |

## Coding

- Gemma 2 27B: 34.1 (#246)
- Yi-Lightning: 27.4 (#320)

| Benchmark | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1211 | 1312 |
| Aider Polyglot | — | 12.9% |
| BigCodeBench Instruct | 42.8% | — |
| LiveBench Coding | 36% | — |
| BigCodeBench Complete | 52.5% | — |

## Reasoning

- Gemma 2 27B: 15.3 (#315)
- Yi-Lightning: 25.9 (#139)

| Benchmark | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1198 | 1302 |
| LiveBench Reasoning | 28.1% | — |
| DTBench | 48% | — |
| LiveBench Data Analysis | 47.9% | — |
| LMCA | 7.1% | — |
| Epoch Capabilities Index | 122.08 | — |
| LiveBench | 38.2% | — |

## Math

- Gemma 2 27B: 10.7 (#311)
- Yi-Lightning: 36.2 (#172)

| Benchmark | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| LMArena Math | 1212 | 1300 |
| OTIS Mock AIME 2024-2025 | 1.4% | — |
| LiveBench Math | 26.5% | — |
| MATH Level 5 | 27.9% | — |

## Knowledge

- Gemma 2 27B: 19.0 (#280)
- Yi-Lightning: 35.4 (#185)

| Benchmark | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1172 | 1286 |
| GPQA Diamond | 36.5% | — |
| Confabulations | 27.1% | — |
| MMLU | 75.7% | — |

## Multilingual

- Gemma 2 27B: 38.6 (#226)
- Yi-Lightning: 42.2 (#196)

| Benchmark | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1217 | 1269 |
| LMArena Chinese | 1221 | 1320 |
| LMArena French | 1247 | 1305 |
| LMArena German | 1209 | 1267 |
| LMArena Japanese | 1175 | 1228 |
| LMArena Korean | 1174 | 1192 |
| LMArena Russian | 1234 | 1255 |
| LMArena Spanish | 1228 | 1315 |

## Instruction Following

- Gemma 2 27B: 60.5 (#249)
- Yi-Lightning: 67.4 (#196)

| Benchmark | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1206 | 1278 |
| LiveBench Instruction Following | 58.1% | — |

## Long Context

- Gemma 2 27B: 37.3 (#218)
- Yi-Lightning: 39.4 (#181)

| Benchmark | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1231 | 1297 |

## Writing & Preference

- Gemma 2 27B: 44.2 (#225)
- Yi-Lightning: 50.2 (#184)

| Benchmark | Gemma 2 27B | Yi-Lightning |
|---|---|---|
| LMArena Text | 1231 | 1302 |
| LMArena Creative Writing | 1241 | 1280 |
| LMArena Multi-Turn | 1224 | 1311 |
| LiveBench Language | 32.6% | — |

## FAQ

### Is Gemma 2 27B better than Yi-Lightning?

Yi-Lightning is the stronger model overall, scoring 37.1 to 29.4 on the Noometry Index.

### Is Gemma 2 27B or Yi-Lightning better for coding?

Gemma 2 27B scores higher on coding benchmarks: 34.1 versus 27.4 in the Noometry coding category.

### How many benchmarks do Gemma 2 27B and Yi-Lightning share?

17 benchmarks have published results for both models. Gemma 2 27B has 34 scored results on Noometry and Yi-Lightning has 18.