Model comparison
Qwen1.5-14B vs Qwen3.5 Plus
Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 32.1 on the Noometry Index.
Last verified . 0 shared benchmarks.
Alibaba (Qwen)Summary
- The widest gap is in math, where Qwen3.5 Plus leads 47.9 to 29.9.
- Qwen1.5-14B has downloadable open weights; the other is API-only.
Side by side
| Qwen1.5-14B | Qwen3.5 Plus | |
|---|---|---|
| Provider | Alibaba (Qwen) | Alibaba (Qwen) |
| Noometry Index | 32.1 | 42.3 |
| Released | 2024-02-04 | 2026-02-16 |
| Weights | Open | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.40 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 17 | 15 |
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Category by category
Coding Not comparable
Qwen1.5-14B: 32.5 (#259), Qwen3.5 Plus: —
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| LMArena Coding | 1138 | — |
| ALE-Bench | — | 621.92 |
Agentic & Tool Use Not comparable
Qwen1.5-14B: —, Qwen3.5 Plus: —
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |
Reasoning Qwen3.5 Plus leads
Qwen1.5-14B: 20.5 (#217), Qwen3.5 Plus: 32.0 (#67)
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| Chess Puzzles | — | 22% |
| LMArena Hard Prompts | 1113 | — |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Epoch Capabilities Index | — | 146.79 |
Math Qwen3.5 Plus leads
Qwen1.5-14B: 29.9 (#214), Qwen3.5 Plus: 47.9 (#55)
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| LMArena Math | 1125 | — |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Qwen3.5 Plus leads
Qwen1.5-14B: 29.3 (#230), Qwen3.5 Plus: 46.0 (#78)
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
| LMArena Expert | 1094 | — |
| MMLU | 68.6% | — |
Multilingual Not comparable
Qwen1.5-14B: 30.8 (#257), Qwen3.5 Plus: —
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1095 | — |
| LMArena Chinese | 1147 | — |
| LMArena French | 1115 | — |
| LMArena German | 1043 | — |
| LMArena Japanese | 1019 | — |
| LMArena Russian | 1046 | — |
| LMArena Spanish | 1085 | — |
Instruction Following Not comparable
Qwen1.5-14B: 57.1 (#266), Qwen3.5 Plus: —
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1102 | — |
Long Context Qwen3.5 Plus leads
Qwen1.5-14B: 33.7 (#252), Qwen3.5 Plus: 42.9 (#109)
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1113 | — |
Writing & Preference Not comparable
Qwen1.5-14B: 33.7 (#270), Qwen3.5 Plus: —
| Benchmark | Qwen1.5-14B | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1128 | — |
| LMArena Creative Writing | 1091 | — |
| LMArena Multi-Turn | 1110 | — |
Frequently asked questions
Is Qwen1.5-14B better than Qwen3.5 Plus?
Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 32.1 on the Noometry Index.
How many benchmarks do Qwen1.5-14B and Qwen3.5 Plus share?
0 benchmarks have published results for both models. Qwen1.5-14B has 17 scored results on Noometry and Qwen3.5 Plus has 15.