Model comparison
Qwen3.5 Plus vs Yi-1.5-34B
Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 30.6 on the Noometry Index.
Last verified . 1 shared benchmarks.
Alibaba (Qwen)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.
Side by side
| Qwen3.5 Plus | Yi-1.5-34B | |
|---|---|---|
| Provider | Alibaba (Qwen) | 01.AI |
| Noometry Index | 42.9 | 30.6 |
| Released | 2026-02-16 | 2024-05-13 |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.40 | — |
| Output $ / M tokens | $2.40 | — |
| Results tracked | 15 | 21 |
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Category by category
Coding Not comparable
Qwen3.5 Plus: —, Yi-1.5-34B: 32.4 (#272)
| 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 Not comparable
Qwen3.5 Plus: —, Yi-1.5-34B: —
| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| Vending-Bench 2 | 0.54 | — |
Reasoning Qwen3.5 Plus leads
Qwen3.5 Plus: 32.8 (#74), Yi-1.5-34B: 22.5 (#191)
| 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 | 146.78 | — |
Math Qwen3.5 Plus leads
Qwen3.5 Plus: 49.6 (#61), Yi-1.5-34B: 27.5 (#249)
| 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 leads
Qwen3.5 Plus: 46.0 (#83), Yi-1.5-34B: 14.8 (#295)
| 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 Not comparable
Qwen3.5 Plus: —, Yi-1.5-34B: 32.3 (#256)
| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | — | 1121 |
| LMArena Chinese | — | 1213 |
| LMArena French | — | 1156 |
| LMArena German | — | 1111 |
| LMArena Japanese | — | 1021 |
| LMArena Korean | — | 1005 |
| LMArena Russian | — | 1091 |
| LMArena Spanish | — | 1121 |
Instruction Following Not comparable
Qwen3.5 Plus: —, Yi-1.5-34B: 59.2 (#257)
| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | — | 1139 |
Long Context Qwen3.5 Plus leads
Qwen3.5 Plus: 43.0 (#113), Yi-1.5-34B: 34.6 (#248)
| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| CL-bench | 19.8% | — |
| CL-bench Life | 12.4% | — |
| LMArena Longer Query | — | 1143 |
Writing & Preference Not comparable
Qwen3.5 Plus: —, Yi-1.5-34B: 37.4 (#257)
| Benchmark | Qwen3.5 Plus | Yi-1.5-34B |
|---|---|---|
| LMArena Text | — | 1173 |
| LMArena Creative Writing | — | 1135 |
| LMArena Multi-Turn | — | 1153 |
Frequently asked questions
Is Qwen3.5 Plus better than Yi-1.5-34B?
Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 30.6 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.