# Llama 3.1-70B vs Yi-Lightning

> Yi-Lightning is the stronger model overall, scoring 37.1 to 29.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/llama-3-1-70b-vs-yi-lightning
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Llama 3.1-70B 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 13.5.
- Llama 3.1-70B has downloadable open weights; the other is API-only.

## Snapshot

| | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| Provider | Meta | 01.AI |
| Noometry Index | 29.6 | 37.1 |
| Rank | 308 | 209 |
| Context | 128K | — |
| Input $/M | $0.40 | — |
| Output $/M | $0.40 | — |
| Weights | Open | Proprietary |

## Coding

- Llama 3.1-70B: 30.3 (#296)
- Yi-Lightning: 27.4 (#320)

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1260 | 1312 |
| Aider Polyglot | — | 12.9% |
| WeirdML | 9% | — |
| BigCodeBench Instruct | 46.1% | — |
| BigCodeBench Complete | 54.8% | — |

## Agentic & Tool Use

- Llama 3.1-70B: 25.1 (#112)
- Yi-Lightning: —

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| TheAgentCompany | 6.9% | — |
| BALROG | 27.9% | — |

## Reasoning

- Llama 3.1-70B: 21.6 (#220)
- Yi-Lightning: 25.9 (#139)

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1241 | 1302 |
| DTBench | 60% | — |
| LMCA | 14.8% | — |
| Epoch Capabilities Index | 125.92 | — |

## Math

- Llama 3.1-70B: 13.5 (#304)
- Yi-Lightning: 36.2 (#172)

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| LMArena Math | 1252 | 1300 |
| OTIS Mock AIME 2024-2025 | 3.6% | — |
| Omni-MATH | 21% | — |
| MATH Level 5 | 36.7% | — |

## Knowledge

- Llama 3.1-70B: 24.2 (#269)
- Yi-Lightning: 35.4 (#185)

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1209 | 1286 |
| GPQA Diamond | 44.2% | — |
| MMLU-Pro | 65.3% | — |
| GPQA (HELM) | 42.6% | — |
| MMLU | 80.1% | — |

## Multilingual

- Llama 3.1-70B: 38.8 (#225)
- Yi-Lightning: 42.2 (#196)

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1219 | 1269 |
| LMArena Chinese | 1215 | 1320 |
| LMArena French | 1261 | 1305 |
| LMArena German | 1222 | 1267 |
| LMArena Japanese | 1132 | 1228 |
| LMArena Korean | 1140 | 1192 |
| LMArena Russian | 1234 | 1255 |
| LMArena Spanish | 1253 | 1315 |

## Instruction Following

- Llama 3.1-70B: 65.3 (#223)
- Yi-Lightning: 67.4 (#196)

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1231 | 1278 |
| IFEval | 82.1% | — |

## Long Context

- Llama 3.1-70B: 37.6 (#214)
- Yi-Lightning: 39.4 (#181)

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1241 | 1297 |

## Writing & Preference

- Llama 3.1-70B: 35.4 (#267)
- Yi-Lightning: 50.2 (#184)

| Benchmark | Llama 3.1-70B | Yi-Lightning |
|---|---|---|
| LMArena Text | 1261 | 1302 |
| LMArena Creative Writing | 1232 | 1280 |
| LMArena Multi-Turn | 1256 | 1311 |
| EQ-Bench Creative Writing | 784 | — |
| WildBench | 75.8% | — |

## FAQ

### Is Llama 3.1-70B better than Yi-Lightning?

Yi-Lightning is the stronger model overall, scoring 37.1 to 29.6 on the Noometry Index.

### Is Llama 3.1-70B or Yi-Lightning better for coding?

Llama 3.1-70B scores higher on coding benchmarks: 30.3 versus 27.4 in the Noometry coding category.

### How many benchmarks do Llama 3.1-70B and Yi-Lightning share?

17 benchmarks have published results for both models. Llama 3.1-70B has 35 scored results on Noometry and Yi-Lightning has 18.