Model comparison
GPT-5.4 mini vs Qwen3.5-9B
GPT-5.4 mini is the stronger model overall, scoring 44.8 to 33.3 on the Noometry Index. Qwen3.5-9B costs 15× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.
Last verified . 8 shared benchmarks.
Alibaba (Qwen)Summary
- They share 8 benchmarks with published results for both. GPT-5.4 mini scores higher in 5 categories and Qwen3.5-9B in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where GPT-5.4 mini leads 29.6 to 14.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 88.9% for GPT-5.4 mini and 61.7% for Qwen3.5-9B.
- Qwen3.5-9B is cheaper at $0.10 / $0.15 per million input/output tokens, against $0.75 / $4.50 for GPT-5.4 mini.
- GPT-5.4 mini accepts more context: 400K tokens versus 262K.
- Qwen3.5-9B has downloadable open weights; the other is API-only.
Side by side
| GPT-5.4 mini | Qwen3.5-9B | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 44.8 | 33.3 |
| Released | 2026-03-17 | 2026-02-23 |
| Weights | Proprietary | Open |
| Context window | 400K | 262K |
| Max output | 128K | 66K |
| Input $ / M tokens | $0.75 | $0.10 |
| Output $ / M tokens | $4.50 | $0.15 |
| Results tracked | 46 | 10 |
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Category by category
Coding GPT-5.4 mini leads
GPT-5.4 mini: 45.0 (#67), Qwen3.5-9B: 35.3 (#213)
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| SciCode | 49.9% | 27.5% |
| FrontierCode | 27% | — |
| LMArena WebDev | 1397 | — |
| WeirdML | 60.3% | — |
| LMArena Coding | 1438 | — |
| ALE-Bench | 1,189 | — |
Agentic & Tool Use GPT-5.4 mini leads
GPT-5.4 mini: 29.6 (#74), Qwen3.5-9B: 14.4 (#143)
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| Terminal-Bench | — | 9.2% |
| DeepResearch Bench | 36.3% | — |
Reasoning GPT-5.4 mini leads
GPT-5.4 mini: 30.3 (#77), Qwen3.5-9B: 22.5 (#178)
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| CritPt | 10% | 0.3% |
| Chess Puzzles | 24% | 12% |
| DTBench | 80% | 71.2% |
| LMCA | 40.8% | 24.5% |
| Epoch Capabilities Index | 148.83 | 139.45 |
| ARC-AGI-2 | 18.9% | — |
| Kagi LLM Benchmark | 37.9% | — |
| NYT Connections (extended) | 61.8% | — |
| ARC-AGI-1 | 63.7% | — |
| Thematic Generalization | 61.7% | — |
| LMArena Hard Prompts | 1424 | — |
| Mystery Game Puzzles | 11% | — |
| ForecastBench | 57 | — |
Math GPT-5.4 mini leads
GPT-5.4 mini: 45.4 (#63), Qwen3.5-9B: 33.5 (#174)
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 88.9% | 61.7% |
| FrontierMath (Tiers 1-3) | 51.2% | — |
| FrontierMath Tier 4 | 9.8% | — |
| MathArena Final-Answer Competitions | — | 48.5% |
| ProofBench | 21% | — |
| LMArena Math | 1418 | — |
| FrontierMath (Feb 2025 set) | 28.3% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |
Knowledge GPT-5.4 mini leads
GPT-5.4 mini: 51.4 (#62), Qwen3.5-9B: 46.0 (#77)
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| GPQA Diamond | 86.9% | 79% |
| SimpleQA Verified | 29.4% | — |
| Vectara Hallucination Rate | 5.5% | — |
| LMArena Expert | 1434 | — |
Multimodal Not comparable
GPT-5.4 mini: 39.0 (#51), Qwen3.5-9B: —
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| LMArena Vision | 1245 | — |
Multilingual Not comparable
GPT-5.4 mini: 52.1 (#94), Qwen3.5-9B: —
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| LMArena Non-English | 1405 | — |
| LMArena Chinese | 1446 | — |
| LMArena French | 1440 | — |
| LMArena German | 1407 | — |
| LMArena Japanese | 1375 | — |
| LMArena Korean | 1369 | — |
| LMArena Russian | 1417 | — |
| LMArena Spanish | 1403 | — |
Instruction Following Not comparable
GPT-5.4 mini: 74.3 (#99), Qwen3.5-9B: —
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| LMArena Instruction Following | 1405 | — |
Long Context Not comparable
GPT-5.4 mini: 42.9 (#107), Qwen3.5-9B: —
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| LMArena Longer Query | 1407 | — |
Writing & Preference Not comparable
GPT-5.4 mini: 64.2 (#56), Qwen3.5-9B: —
| Benchmark | GPT-5.4 mini | Qwen3.5-9B |
|---|---|---|
| LMArena Text | 1411 | — |
| LMArena Creative Writing | 1370 | — |
| EQ-Bench Creative Writing | 1665 | — |
| LMArena Multi-Turn | 1429 | — |
Frequently asked questions
Is GPT-5.4 mini better than Qwen3.5-9B?
GPT-5.4 mini is the stronger model overall, scoring 44.8 to 33.3 on the Noometry Index. Qwen3.5-9B costs 15× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.
Which is cheaper, GPT-5.4 mini or Qwen3.5-9B?
Qwen3.5-9B is cheaper. It lists at $0.10 per million input tokens and $0.15 per million output tokens; GPT-5.4 mini lists at $0.75 and $4.50.
Is GPT-5.4 mini or Qwen3.5-9B better for coding?
GPT-5.4 mini scores higher on coding benchmarks: 45.0 versus 35.3 in the Noometry coding category.
Which has the bigger context window?
GPT-5.4 mini does, with 400K tokens against 262K.
How many benchmarks do GPT-5.4 mini and Qwen3.5-9B share?
8 benchmarks have published results for both models. GPT-5.4 mini has 46 scored results on Noometry and Qwen3.5-9B has 10.