# Claude 2 vs Yi-Lightning

> Yi-Lightning is the stronger model overall, scoring 36.5 to 24.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-2-vs-yi-lightning
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Yi-Lightning leads 33.5 to 8.7.

## Snapshot

| | Claude 2 | Yi-Lightning |
|---|---|---|
| Provider | Anthropic | 01.AI |
| Noometry Index | 24.7 | 36.5 |
| Rank | 342 | 206 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2: —
- Yi-Lightning: 27.0 (#315)

| Benchmark | Claude 2 | Yi-Lightning |
|---|---|---|
| Aider Polyglot | — | 12.9% |
| LMArena Coding | — | 1313 |
| HumanEval+ | 61.6% | — |

## Reasoning

- Claude 2: 20.8 (#213)
- Yi-Lightning: 24.9 (#137)

| Benchmark | Claude 2 | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | — | 1302 |
| DTBench | 51.9% | — |
| Epoch Capabilities Index | 120.08 | — |

## Math

- Claude 2: 8.7 (#314)
- Yi-Lightning: 33.5 (#173)

| Benchmark | Claude 2 | Yi-Lightning |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | — |
| LMArena Math | — | 1300 |
| MATH Level 5 | 11.7% | — |

## Knowledge

- Claude 2: 17.0 (#282)
- Yi-Lightning: 34.8 (#182)

| Benchmark | Claude 2 | Yi-Lightning |
|---|---|---|
| GPQA Diamond | 34.7% | — |
| LMArena Expert | — | 1286 |
| MMLU | 78.5% | — |
| TriviaQA | 87.5% | — |

## Multilingual

- Claude 2: —
- Yi-Lightning: 42.4 (#191)

| Benchmark | Claude 2 | Yi-Lightning |
|---|---|---|
| LMArena Non-English | — | 1269 |
| LMArena Chinese | — | 1320 |
| LMArena French | — | 1304 |
| LMArena German | — | 1267 |
| LMArena Japanese | — | 1228 |
| LMArena Korean | — | 1192 |
| LMArena Russian | — | 1255 |
| LMArena Spanish | — | 1315 |

## Instruction Following

- Claude 2: —
- Yi-Lightning: 67.6 (#191)

| Benchmark | Claude 2 | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | — | 1278 |

## Long Context

- Claude 2: —
- Yi-Lightning: 39.4 (#176)

| Benchmark | Claude 2 | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | — | 1297 |

## Writing & Preference

- Claude 2: —
- Yi-Lightning: 50.4 (#178)

| Benchmark | Claude 2 | Yi-Lightning |
|---|---|---|
| LMArena Text | — | 1302 |
| LMArena Creative Writing | — | 1280 |
| LMArena Multi-Turn | — | 1311 |

## FAQ

### Is Claude 2 better than Yi-Lightning?

Yi-Lightning is the stronger model overall, scoring 36.5 to 24.7 on the Noometry Index.

### How many benchmarks do Claude 2 and Yi-Lightning share?

0 benchmarks have published results for both models. Claude 2 has 8 scored results on Noometry and Yi-Lightning has 18.