# Qwen3.5 397B-A17B vs Yi-Lightning

> Qwen3.5 397B-A17B is the stronger model overall, scoring 45.7 to 36.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/qwen3-5-397b-a17b-vs-yi-lightning
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Qwen3.5 397B-A17B scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Qwen3.5 397B-A17B leads 53.3 to 34.8.
- Qwen3.5 397B-A17B has downloadable open weights; the other is API-only.

## Snapshot

| | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| Provider | Alibaba (Qwen) | 01.AI |
| Noometry Index | 45.7 | 36.5 |
| Rank | 60 | 206 |
| Context | 262K | — |
| Input $/M | $0.60 | — |
| Output $/M | $3.60 | — |
| Weights | Open | Proprietary |

## Coding

- Qwen3.5 397B-A17B: 41.7 (#108)
- Yi-Lightning: 27.0 (#315)

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1464 | 1313 |
| Aider Polyglot | — | 12.9% |
| LMArena WebDev | 1400 | — |

## Agentic & Tool Use

- Qwen3.5 397B-A17B: 33.2 (#51)
- Yi-Lightning: —

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| APEX-Agents | 24.9% | — |
| τ²-bench Airline | 81.5% | — |
| τ²-bench Banking | 9.8% | — |
| τ²-bench Retail | 84.4% | — |
| τ²-bench Telecom | 97.8% | — |

## Reasoning

- Qwen3.5 397B-A17B: 33.6 (#62)
- Yi-Lightning: 24.9 (#137)

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1448 | 1302 |
| Kagi LLM Benchmark | 73.7% | — |
| NYT Connections (extended) | 58.9% | — |
| Chess Puzzles | 13% | — |
| Thematic Generalization | 65.1% | — |
| Mystery Game Puzzles | 18% | — |
| DTBench | 87.5% | — |
| LMCA | 37.9% | — |
| Epoch Capabilities Index | 146.64 | — |

## Math

- Qwen3.5 397B-A17B: 44.9 (#64)
- Yi-Lightning: 33.5 (#173)

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Math | 1455 | 1300 |
| FrontierMath (Tiers 1-3) | 31.2% | — |
| OTIS Mock AIME 2024-2025 | 88.9% | — |

## Knowledge

- Qwen3.5 397B-A17B: 53.3 (#53)
- Yi-Lightning: 34.8 (#182)

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1461 | 1286 |
| GPQA Diamond | 86.4% | — |

## Multimodal

- Qwen3.5 397B-A17B: 40.0 (#42)
- Yi-Lightning: —

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1262 | — |

## Multilingual

- Qwen3.5 397B-A17B: 54.0 (#56)
- Yi-Lightning: 42.4 (#191)

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1431 | 1269 |
| LMArena Chinese | 1501 | 1320 |
| LMArena French | 1461 | 1304 |
| LMArena German | 1447 | 1267 |
| LMArena Japanese | 1427 | 1228 |
| LMArena Korean | 1382 | 1192 |
| LMArena Russian | 1429 | 1255 |
| LMArena Spanish | 1443 | 1315 |

## Instruction Following

- Qwen3.5 397B-A17B: 75.2 (#73)
- Yi-Lightning: 67.6 (#191)

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1424 | 1278 |

## Long Context

- Qwen3.5 397B-A17B: 44.1 (#71)
- Yi-Lightning: 39.4 (#176)

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1442 | 1297 |

## Writing & Preference

- Qwen3.5 397B-A17B: 62.5 (#74)
- Yi-Lightning: 50.4 (#178)

| Benchmark | Qwen3.5 397B-A17B | Yi-Lightning |
|---|---|---|
| LMArena Text | 1438 | 1302 |
| LMArena Creative Writing | 1401 | 1280 |
| LMArena Multi-Turn | 1447 | 1311 |
| EQ-Bench Creative Writing | 1478 | — |

## FAQ

### Is Qwen3.5 397B-A17B better than Yi-Lightning?

Qwen3.5 397B-A17B is the stronger model overall, scoring 45.7 to 36.5 on the Noometry Index.

### Is Qwen3.5 397B-A17B or Yi-Lightning better for coding?

Qwen3.5 397B-A17B scores higher on coding benchmarks: 41.7 versus 27.0 in the Noometry coding category.

### How many benchmarks do Qwen3.5 397B-A17B and Yi-Lightning share?

17 benchmarks have published results for both models. Qwen3.5 397B-A17B has 36 scored results on Noometry and Yi-Lightning has 18.