# Qwen3.5 Plus vs Yi-1.5-34B

> Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 30.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/qwen3-5-plus-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Qwen3.5 Plus scores higher in 4 categories and Yi-1.5-34B in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Qwen3.5 Plus leads 46.0 to 14.8.
- The biggest single-benchmark swing is GPQA Diamond: 84.8% for Qwen3.5 Plus and 32% for Yi-1.5-34B.
- Yi-1.5-34B has downloadable open weights; the other is API-only.

## Snapshot

| | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| Provider | Alibaba (Qwen) | 01.AI |
| Noometry Index | 42.3 | 30.2 |
| Rank | 103 | 286 |
| Context | 1M | — |
| Input $/M | $0.40 | — |
| Output $/M | $2.40 | — |
| Weights | Proprietary | Open |

## Coding

- Qwen3.5 Plus: —
- Yi-1.5-34B: 31.9 (#267)

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| BigCodeBench Instruct | — | 33.9% |
| LMArena Coding | — | 1169 |
| BigCodeBench Complete | — | 43.8% |
| ALE-Bench | 621.92 | — |

## Agentic & Tool Use

- Qwen3.5 Plus: —
- Yi-1.5-34B: —

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| Vending-Bench 2 | 0.54 | — |

## Reasoning

- Qwen3.5 Plus: 32.0 (#67)
- Yi-1.5-34B: 21.5 (#195)

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| Chess Puzzles | 22% | — |
| LMArena Hard Prompts | — | 1160 |
| Mystery Game Puzzles | 17% | — |
| DTBench | 80.5% | — |
| LMCA | 36.4% | — |
| Epoch Capabilities Index | 146.79 | — |

## Math

- Qwen3.5 Plus: 47.9 (#55)
- Yi-1.5-34B: 25.3 (#248)

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 86.7% | — |
| LMArena Math | — | 1182 |
| MATH Level 5 | — | 25.5% |
| FrontierMath (Feb 2025 set) | 21% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |

## Knowledge

- Qwen3.5 Plus: 46.0 (#78)
- Yi-1.5-34B: 14.8 (#290)

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | 84.8% | 32% |
| SimpleQA Verified | 25.4% | — |
| Vectara Hallucination Rate | 10.7% | — |
| LMArena Expert | — | 1144 |

## Multilingual

- Qwen3.5 Plus: —
- Yi-1.5-34B: 32.5 (#251)

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | — | 1121 |
| LMArena Chinese | — | 1213 |
| LMArena French | — | 1155 |
| LMArena German | — | 1111 |
| LMArena Japanese | — | 1021 |
| LMArena Korean | — | 1005 |
| LMArena Russian | — | 1091 |
| LMArena Spanish | — | 1120 |

## Instruction Following

- Qwen3.5 Plus: —
- Yi-1.5-34B: 59.4 (#252)

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | — | 1139 |

## Long Context

- Qwen3.5 Plus: 42.9 (#109)
- Yi-1.5-34B: 34.6 (#243)

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| CL-bench | 19.8% | — |
| CL-bench Life | 12.4% | — |
| LMArena Longer Query | — | 1144 |

## Writing & Preference

- Qwen3.5 Plus: —
- Yi-1.5-34B: 37.6 (#252)

| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| LMArena Text | — | 1173 |
| LMArena Creative Writing | — | 1135 |
| LMArena Multi-Turn | — | 1153 |

## FAQ

### Is Qwen3.5 Plus better than Yi-1.5-34B?

Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 30.2 on the Noometry Index.

### How many benchmarks do Qwen3.5 Plus and Yi-1.5-34B share?

1 benchmark has published results for both models. Qwen3.5 Plus has 15 scored results on Noometry and Yi-1.5-34B has 21.