# Gemma 4 31B IT vs Yi-Lightning

> Gemma 4 31B IT is the stronger model overall, scoring 43.5 to 37.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemma-4-31b-it-vs-yi-lightning
- Last updated: 2026-10-11
- Shared benchmarks: 14

## Summary

- They share 14 benchmarks with published results for both. Gemma 4 31B IT scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where Gemma 4 31B IT leads 42.3 to 27.4.
- Gemma 4 31B IT has downloadable open weights; the other is API-only.

## Snapshot

| | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| Provider | Google | 01.AI |
| Noometry Index | 43.5 | 37.1 |
| Rank | 90 | 209 |
| Context | 262K | — |
| Input $/M | $0.09 | — |
| Output $/M | $0.34 | — |
| Weights | Open | Proprietary |

## Coding

- Gemma 4 31B IT: 42.3 (#108)
- Yi-Lightning: 27.4 (#320)

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1459 | 1312 |
| Aider Polyglot | — | 12.9% |
| LMArena WebDev | 1366 | — |
| SciCode | 43.4% | — |
| WeirdML | 52.3% | — |
| ALE-Bench | 925.5 | — |

## Reasoning

- Gemma 4 31B IT: 27.2 (#122)
- Yi-Lightning: 25.9 (#139)

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1448 | 1302 |
| Kagi LLM Benchmark | 63.5% | — |
| NYT Connections (extended) | 70.6% | — |
| CritPt | 1.4% | — |
| Chess Puzzles | 5% | — |
| Thematic Generalization | 53% | — |
| DTBench | 82.7% | — |
| LMCA | 39.3% | — |
| Surface Evolver Bench | 30.6% | — |
| Epoch Capabilities Index | 142.74 | — |

## Math

- Gemma 4 31B IT: 43.2 (#81)
- Yi-Lightning: 36.2 (#172)

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Math | 1465 | 1300 |
| OTIS Mock AIME 2024-2025 | 73.3% | — |

## Knowledge

- Gemma 4 31B IT: 37.9 (#151)
- Yi-Lightning: 35.4 (#185)

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1465 | 1286 |
| GPQA Diamond | 75.8% | — |
| SimpleQA Verified | 10.4% | — |
| Vectara Hallucination Rate | 7.4% | — |

## Multimodal

- Gemma 4 31B IT: 41.6 (#34)
- Yi-Lightning: —

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1277 | — |
| LMArena Document | 1425 | — |

## Multilingual

- Gemma 4 31B IT: 53.8 (#57)
- Yi-Lightning: 42.2 (#196)

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1431 | 1269 |
| LMArena Chinese | 1476 | 1320 |
| LMArena French | 1435 | 1305 |
| LMArena Russian | 1460 | 1255 |
| LMArena Spanish | 1444 | 1315 |
| LMArena German | — | 1267 |
| LMArena Japanese | — | 1228 |
| LMArena Korean | — | 1192 |

## Instruction Following

- Gemma 4 31B IT: 75.5 (#61)
- Yi-Lightning: 67.4 (#196)

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1433 | 1278 |

## Long Context

- Gemma 4 31B IT: 44.2 (#71)
- Yi-Lightning: 39.4 (#181)

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1446 | 1297 |

## Writing & Preference

- Gemma 4 31B IT: 60.5 (#96)
- Yi-Lightning: 50.2 (#184)

| Benchmark | Gemma 4 31B IT | Yi-Lightning |
|---|---|---|
| LMArena Text | 1443 | 1302 |
| LMArena Creative Writing | 1415 | 1280 |
| LMArena Multi-Turn | 1452 | 1311 |
| EQ-Bench Creative Writing | 1368 | — |
| EQ-Bench 4 | 1120 | — |

## FAQ

### Is Gemma 4 31B IT better than Yi-Lightning?

Gemma 4 31B IT is the stronger model overall, scoring 43.5 to 37.1 on the Noometry Index.

### Is Gemma 4 31B IT or Yi-Lightning better for coding?

Gemma 4 31B IT scores higher on coding benchmarks: 42.3 versus 27.4 in the Noometry coding category.

### How many benchmarks do Gemma 4 31B IT and Yi-Lightning share?

14 benchmarks have published results for both models. Gemma 4 31B IT has 35 scored results on Noometry and Yi-Lightning has 18.