Model comparison
Qwen Plus vs Qwen1.5 4b Chat
Qwen Plus is the stronger model overall, scoring 36.7 to 28.3 on the Noometry Index.
Last verified . 12 shared benchmarks.
Alibaba (Qwen)Summary
- They share 12 benchmarks with published results for both. Qwen Plus scores higher in 7 categories and Qwen1.5 4b Chat in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Qwen Plus leads 52.4 to 23.9.
- Qwen1.5 4b Chat has downloadable open weights; the other is API-only.
Side by side
| Qwen Plus | Qwen1.5 4b Chat | |
|---|---|---|
| Provider | Alibaba (Qwen) | Alibaba (Qwen) |
| Noometry Index | 36.7 | 28.3 |
| Released | 2024-01-25 | — |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 33K | — |
| Input $ / M tokens | $0.40 | — |
| Output $ / M tokens | $1.20 | — |
| Results tracked | 20 | 13 |
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Category by category
Coding Qwen Plus leads
Qwen Plus: 38.3 (#163), Qwen1.5 4b Chat: 28.6 (#305)
| Benchmark | Qwen Plus | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Coding | 1328 | 999 |
Reasoning Qwen Plus leads
Qwen Plus: 27.6 (#101), Qwen1.5 4b Chat: 17.7 (#277)
| Benchmark | Qwen Plus | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Hard Prompts | 1317 | 976 |
| Kagi LLM Benchmark | 63.3% | — |
| DTBench | 81.1% | — |
| LMCA | 24% | — |
Math Qwen1.5 4b Chat leads
Qwen Plus: 22.0 (#266), Qwen1.5 4b Chat: 27.9 (#233)
| Benchmark | Qwen Plus | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Math | 1326 | 1026 |
| OTIS Mock AIME 2024-2025 | 17.8% | — |
| MATH Level 5 | 65.3% | — |
| FrontierMath (Feb 2025 set) | 1.7% | — |
Knowledge Qwen Plus leads
Qwen Plus: 27.4 (#245), Qwen1.5 4b Chat: 26.2 (#252)
| Benchmark | Qwen Plus | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Expert | 1328 | 980 |
| GPQA Diamond | 48.1% | — |
Multilingual Qwen Plus leads
Qwen Plus: 45.3 (#170), Qwen1.5 4b Chat: 24.2 (#285)
| Benchmark | Qwen Plus | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Non-English | 1310 | 979 |
| LMArena Chinese | 1347 | 1024 |
| LMArena Russian | 1323 | 952 |
| LMArena German | — | 902 |
| LMArena Japanese | 1251 | — |
Instruction Following Qwen Plus leads
Qwen Plus: 69.0 (#176), Qwen1.5 4b Chat: 49.3 (#295)
| Benchmark | Qwen Plus | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Instruction Following | 1303 | 979 |
Long Context Qwen Plus leads
Qwen Plus: 40.3 (#153), Qwen1.5 4b Chat: 30.1 (#285)
| Benchmark | Qwen Plus | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Longer Query | 1325 | 988 |
Writing & Preference Qwen Plus leads
Qwen Plus: 52.4 (#171), Qwen1.5 4b Chat: 23.9 (#304)
| Benchmark | Qwen Plus | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Text | 1326 | 997 |
| LMArena Creative Writing | 1293 | 969 |
| LMArena Multi-Turn | 1336 | 977 |
Frequently asked questions
Is Qwen Plus better than Qwen1.5 4b Chat?
Qwen Plus is the stronger model overall, scoring 36.7 to 28.3 on the Noometry Index.
Is Qwen Plus or Qwen1.5 4b Chat better for coding?
Qwen Plus scores higher on coding benchmarks: 38.3 versus 28.6 in the Noometry coding category.
How many benchmarks do Qwen Plus and Qwen1.5 4b Chat share?
12 benchmarks have published results for both models. Qwen Plus has 20 scored results on Noometry and Qwen1.5 4b Chat has 13.