Model comparison
Qwen3-4B vs Qwen3.5-9B
Qwen3.5-9B is the stronger model overall, scoring 33.3 to 31.5 on the Noometry Index.
Last verified . 4 shared benchmarks.
Alibaba (Qwen)Summary
- They share 4 benchmarks with published results for both. Qwen3-4B scores higher in 1 category and Qwen3.5-9B in 3 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Qwen3.5-9B leads 46.0 to 33.0.
- The biggest single-benchmark swing is GPQA Diamond: 52.3% for Qwen3-4B and 79% for Qwen3.5-9B.
Side by side
| Qwen3-4B | Qwen3.5-9B | |
|---|---|---|
| Provider | Alibaba (Qwen) | Alibaba (Qwen) |
| Noometry Index | 31.5 | 33.3 |
| Released | 2025-04-29 | 2026-02-23 |
| Weights | Open | Open |
| Context window | — | 262K |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.15 |
| Results tracked | 6 | 10 |
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Category by category
Coding Not comparable
Qwen3-4B: —, Qwen3.5-9B: 35.3 (#213)
| Benchmark | Qwen3-4B | Qwen3.5-9B |
|---|---|---|
| SciCode | — | 27.5% |
Agentic & Tool Use Qwen3-4B leads
Qwen3-4B: 27.3 (#94), Qwen3.5-9B: 14.4 (#143)
| Benchmark | Qwen3-4B | Qwen3.5-9B |
|---|---|---|
| Terminal-Bench | — | 9.2% |
| Berkeley Function Calling Leaderboard | 35.7% | — |
Reasoning Qwen3.5-9B leads
Qwen3-4B: 18.5 (#264), Qwen3.5-9B: 22.5 (#178)
| Benchmark | Qwen3-4B | Qwen3.5-9B |
|---|---|---|
| Chess Puzzles | 4% | 12% |
| CritPt | — | 0.3% |
| DTBench | — | 71.2% |
| LMCA | — | 24.5% |
| Epoch Capabilities Index | — | 139.45 |
Math Qwen3.5-9B leads
Qwen3-4B: 28.5 (#228), Qwen3.5-9B: 33.5 (#174)
| Benchmark | Qwen3-4B | Qwen3.5-9B |
|---|---|---|
| MathArena Final-Answer Competitions | 38.5% | 48.5% |
| OTIS Mock AIME 2024-2025 | 52.2% | 61.7% |
Knowledge Qwen3.5-9B leads
Qwen3-4B: 33.0 (#198), Qwen3.5-9B: 46.0 (#77)
| Benchmark | Qwen3-4B | Qwen3.5-9B |
|---|---|---|
| GPQA Diamond | 52.3% | 79% |
| Vectara Hallucination Rate | 5.7% | — |
Frequently asked questions
Is Qwen3-4B better than Qwen3.5-9B?
Qwen3.5-9B is the stronger model overall, scoring 33.3 to 31.5 on the Noometry Index.
How many benchmarks do Qwen3-4B and Qwen3.5-9B share?
4 benchmarks have published results for both models. Qwen3-4B has 6 scored results on Noometry and Qwen3.5-9B has 10.