Model comparison
Qwen1.5 4b Chat vs Qwen3.6 Plus
Qwen3.6 Plus is the stronger model overall, scoring 47.5 to 28.8 on the Noometry Index.
Last verified . 13 shared benchmarks.
Alibaba (Qwen)Summary
- They share 13 benchmarks with published results for both. Qwen1.5 4b Chat scores higher in 0 categories and Qwen3.6 Plus in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Qwen3.6 Plus leads 62.2 to 23.8.
- Qwen1.5 4b Chat has downloadable open weights; the other is API-only.
Side by side
| Qwen1.5 4b Chat | Qwen3.6 Plus | |
|---|---|---|
| Provider | Alibaba (Qwen) | Alibaba (Qwen) |
| Noometry Index | 28.8 | 47.5 |
| Released | — | 2026-03-31 |
| Weights | Open | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.50 |
| Output $ / M tokens | — | $3 |
| Results tracked | 13 | 37 |
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Category by category
Coding Qwen3.6 Plus leads
Qwen1.5 4b Chat: 29.1 (#308), Qwen3.6 Plus: 40.8 (#130)
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| LMArena Coding | 999 | 1467 |
| SWE-bench Verified | — | 57.9% |
| LMArena WebDev | — | 1461 |
| SciCode | — | 40.7% |
| ALE-Bench | — | 670.15 |
Agentic & Tool Use Not comparable
Qwen1.5 4b Chat: —, Qwen3.6 Plus: —
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| Vending-Bench 2 | — | 5,115 |
Reasoning Qwen3.6 Plus leads
Qwen1.5 4b Chat: 18.5 (#279), Qwen3.6 Plus: 29.3 (#93)
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| LMArena Hard Prompts | 976 | 1449 |
| NYT Connections (extended) | — | 60.3% |
| CritPt | — | 2.9% |
| Chess Puzzles | — | 17% |
| Thematic Generalization | — | 59.5% |
| Mystery Game Puzzles | — | 12% |
| DTBench | — | 81.9% |
| LMCA | — | 33.1% |
| Epoch Capabilities Index | — | 147.65 |
Math Qwen3.6 Plus leads
Qwen1.5 4b Chat: 30.4 (#234), Qwen3.6 Plus: 51.8 (#54)
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| LMArena Math | 1026 | 1450 |
| FrontierMath (Tiers 1-3) | — | 38.2% |
| OTIS Mock AIME 2024-2025 | — | 93.3% |
| FrontierMath (Feb 2025 set) | — | 26.2% |
| FrontierMath Tier 4 (v1) | — | 8.3% |
Knowledge Qwen3.6 Plus leads
Qwen1.5 4b Chat: 26.7 (#255), Qwen3.6 Plus: 56.1 (#45)
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| LMArena Expert | 980 | 1454 |
| GPQA Diamond | — | 88.4% |
| SimpleQA Verified | — | 44.1% |
Multilingual Qwen3.6 Plus leads
Qwen1.5 4b Chat: 24.1 (#290), Qwen3.6 Plus: 53.3 (#70)
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| LMArena Non-English | 979 | 1424 |
| LMArena Chinese | 1024 | 1477 |
| LMArena German | 902 | 1452 |
| LMArena Russian | 952 | 1434 |
| LMArena French | — | 1455 |
| LMArena Japanese | — | 1389 |
| LMArena Korean | — | 1379 |
| LMArena Spanish | — | 1432 |
Instruction Following Qwen3.6 Plus leads
Qwen1.5 4b Chat: 49.0 (#300), Qwen3.6 Plus: 75.0 (#74)
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| LMArena Instruction Following | 978 | 1425 |
Long Context Qwen3.6 Plus leads
Qwen1.5 4b Chat: 30.1 (#290), Qwen3.6 Plus: 45.2 (#49)
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| LMArena Longer Query | 988 | 1439 |
| CL-bench | — | 20.3% |
Writing & Preference Qwen3.6 Plus leads
Qwen1.5 4b Chat: 23.8 (#309), Qwen3.6 Plus: 62.2 (#82)
| Benchmark | Qwen1.5 4b Chat | Qwen3.6 Plus |
|---|---|---|
| LMArena Text | 997 | 1437 |
| LMArena Creative Writing | 969 | 1404 |
| LMArena Multi-Turn | 977 | 1438 |
Frequently asked questions
Is Qwen1.5 4b Chat better than Qwen3.6 Plus?
Qwen3.6 Plus is the stronger model overall, scoring 47.5 to 28.8 on the Noometry Index.
Is Qwen1.5 4b Chat or Qwen3.6 Plus better for coding?
Qwen3.6 Plus scores higher on coding benchmarks: 40.8 versus 29.1 in the Noometry coding category.
How many benchmarks do Qwen1.5 4b Chat and Qwen3.6 Plus share?
13 benchmarks have published results for both models. Qwen1.5 4b Chat has 13 scored results on Noometry and Qwen3.6 Plus has 37.