# Codellama 34b Instruct vs Yi-Lightning

> Yi-Lightning is the stronger model overall, scoring 37.1 to 30.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/codellama-34b-instruct-vs-yi-lightning
- Last updated: 2026-10-12
- Shared benchmarks: 10

## Summary

- They share 10 benchmarks with published results for both. Codellama 34b Instruct scores higher in 1 category and Yi-Lightning in 6 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Yi-Lightning leads 50.2 to 28.2.
- Codellama 34b Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| Provider | Meta | 01.AI |
| Noometry Index | 30.8 | 37.1 |
| Rank | 287 | 209 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Proprietary |

## Coding

- Codellama 34b Instruct: 28.5 (#314)
- Yi-Lightning: 27.4 (#320)

| Benchmark | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1046 | 1312 |
| Aider Polyglot | — | 12.9% |
| BigCodeBench Instruct | 29% | — |
| BigCodeBench Complete | 37.1% | — |
| HumanEval+ | 43.9% | — |
| MBPP+ | 56.3% | — |

## Reasoning

- Codellama 34b Instruct: 19.6 (#255)
- Yi-Lightning: 25.9 (#139)

| Benchmark | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1032 | 1302 |

## Math

- Codellama 34b Instruct: 31.0 (#230)
- Yi-Lightning: 36.2 (#172)

| Benchmark | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| LMArena Math | 1056 | 1300 |

## Knowledge

- Codellama 34b Instruct: —
- Yi-Lightning: 35.4 (#185)

| Benchmark | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| LMArena Expert | — | 1286 |

## Multilingual

- Codellama 34b Instruct: 25.8 (#284)
- Yi-Lightning: 42.2 (#196)

| Benchmark | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1011 | 1269 |
| LMArena Chinese | 976 | 1320 |
| LMArena French | — | 1305 |
| LMArena German | — | 1267 |
| LMArena Japanese | — | 1228 |
| LMArena Korean | — | 1192 |
| LMArena Russian | — | 1255 |
| LMArena Spanish | — | 1315 |

## Instruction Following

- Codellama 34b Instruct: 52.2 (#291)
- Yi-Lightning: 67.4 (#196)

| Benchmark | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1028 | 1278 |

## Long Context

- Codellama 34b Instruct: 30.9 (#284)
- Yi-Lightning: 39.4 (#181)

| Benchmark | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1013 | 1297 |

## Writing & Preference

- Codellama 34b Instruct: 28.2 (#297)
- Yi-Lightning: 50.2 (#184)

| Benchmark | Codellama 34b Instruct | Yi-Lightning |
|---|---|---|
| LMArena Text | 1066 | 1302 |
| LMArena Creative Writing | 1032 | 1280 |
| LMArena Multi-Turn | 1015 | 1311 |

## FAQ

### Is Codellama 34b Instruct better than Yi-Lightning?

Yi-Lightning is the stronger model overall, scoring 37.1 to 30.8 on the Noometry Index.

### Is Codellama 34b Instruct or Yi-Lightning better for coding?

Codellama 34b Instruct scores higher on coding benchmarks: 28.5 versus 27.4 in the Noometry coding category.

### How many benchmarks do Codellama 34b Instruct and Yi-Lightning share?

10 benchmarks have published results for both models. Codellama 34b Instruct has 14 scored results on Noometry and Yi-Lightning has 18.