Model comparison
GPT-5.4 mini vs Qwen3.5 Plus
GPT-5.4 mini is the stronger model overall, scoring 45.0 to 42.9 on the Noometry Index. Qwen3.5 Plus costs 1.9× less per token, which makes it the better buy when GPT-5.4 mini's lead doesn't matter for your workload.
Last verified . 12 shared benchmarks.
Alibaba (Qwen)Summary
- They share 12 benchmarks with published results for both. GPT-5.4 mini scores higher in 1 category and Qwen3.5 Plus in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.4 mini leads 51.5 to 46.0.
- The biggest single-benchmark swing is Mystery Game Puzzles: 11% for GPT-5.4 mini and 17% for Qwen3.5 Plus.
- Qwen3.5 Plus is cheaper at $0.40 / $2.40 per million input/output tokens, against $0.75 / $4.50 for GPT-5.4 mini.
- Qwen3.5 Plus accepts more context: 1M tokens versus 400K.
Side by side
| GPT-5.4 mini | Qwen3.5 Plus | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 45.0 | 42.9 |
| Released | 2026-03-17 | 2026-02-16 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 1M |
| Max output | 128K | 66K |
| Input $ / M tokens | $0.75 | $0.40 |
| Output $ / M tokens | $4.50 | $2.40 |
| Results tracked | 46 | 15 |
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Category by category
Coding Not comparable
GPT-5.4 mini: 45.2 (#72), Qwen3.5 Plus: —
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| ALE-Bench | 1,189 | 621.92 |
| FrontierCode | 27% | — |
| LMArena WebDev | 1397 | — |
| SciCode | 49.9% | — |
| WeirdML | 60.3% | — |
| LMArena Coding | 1438 | — |
Agentic & Tool Use Not comparable
GPT-5.4 mini: 29.9 (#81), Qwen3.5 Plus: —
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| DeepResearch Bench | 36.3% | — |
| Vending-Bench 2 | — | 0.54 |
Reasoning Qwen3.5 Plus leads
GPT-5.4 mini: 30.4 (#85), Qwen3.5 Plus: 32.8 (#74)
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| Chess Puzzles | 24% | 22% |
| Mystery Game Puzzles | 11% | 17% |
| DTBench | 80% | 80.5% |
| LMCA | 40.8% | 36.4% |
| Epoch Capabilities Index | 148.84 | 146.78 |
| ARC-AGI-2 | 18.9% | — |
| Kagi LLM Benchmark | 37.9% | — |
| NYT Connections (extended) | 61.8% | — |
| ARC-AGI-1 | 63.7% | — |
| CritPt | 10% | — |
| Thematic Generalization | 61.7% | — |
| LMArena Hard Prompts | 1424 | — |
| ForecastBench | 57 | — |
Math Qwen3.5 Plus leads
GPT-5.4 mini: 45.5 (#75), Qwen3.5 Plus: 49.6 (#61)
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 88.9% | 86.7% |
| FrontierMath (Feb 2025 set) | 28.3% | 21% |
| FrontierMath Tier 4 (v1) | 2.1% | 2.1% |
| FrontierMath (Tiers 1-3) | 51.2% | — |
| FrontierMath Tier 4 | 9.8% | — |
| ProofBench | 21% | — |
| LMArena Math | 1419 | — |
Knowledge GPT-5.4 mini leads
GPT-5.4 mini: 51.5 (#67), Qwen3.5 Plus: 46.0 (#83)
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | 86.9% | 84.8% |
| SimpleQA Verified | 29.4% | 25.4% |
| Vectara Hallucination Rate | 5.5% | 10.7% |
| LMArena Expert | 1435 | — |
Multimodal Not comparable
GPT-5.4 mini: 39.7 (#56), Qwen3.5 Plus: —
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| LMArena Vision | 1245 | — |
Multilingual Not comparable
GPT-5.4 mini: 51.9 (#96), Qwen3.5 Plus: —
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1405 | — |
| LMArena Chinese | 1446 | — |
| LMArena French | 1440 | — |
| LMArena German | 1409 | — |
| LMArena Japanese | 1374 | — |
| LMArena Korean | 1368 | — |
| LMArena Russian | 1417 | — |
| LMArena Spanish | 1405 | — |
Instruction Following Not comparable
GPT-5.4 mini: 74.1 (#102), Qwen3.5 Plus: —
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1405 | — |
Long Context Too close to call
GPT-5.4 mini: 43.0 (#112), Qwen3.5 Plus: 43.0 (#113)
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1407 | — |
Writing & Preference Not comparable
GPT-5.4 mini: 64.0 (#58), Qwen3.5 Plus: —
| Benchmark | GPT-5.4 mini | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1412 | — |
| 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 Plus?
GPT-5.4 mini is the stronger model overall, scoring 45.0 to 42.9 on the Noometry Index. Qwen3.5 Plus costs 1.9× 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 Plus?
Qwen3.5 Plus is cheaper. It lists at $0.40 per million input tokens and $2.40 per million output tokens; GPT-5.4 mini lists at $0.75 and $4.50.
Which has the bigger context window?
Qwen3.5 Plus does, with 1M tokens against 400K.
How many benchmarks do GPT-5.4 mini and Qwen3.5 Plus share?
12 benchmarks have published results for both models. GPT-5.4 mini has 46 scored results on Noometry and Qwen3.5 Plus has 15.