Model comparison
GPT-5 Mini vs Qwen3.5 Plus
Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 41.8 on the Noometry Index.
Last verified . 13 shared benchmarks.
Alibaba (Qwen)Summary
- They share 13 benchmarks with published results for both. GPT-5 Mini scores higher in 0 categories and Qwen3.5 Plus in 4 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.5 Plus leads 32.8 to 23.9.
- The biggest single-benchmark swing is GPQA Diamond: 75% for GPT-5 Mini and 84.8% for Qwen3.5 Plus.
- GPT-5 Mini is cheaper at $0.25 / $2 per million input/output tokens, against $0.40 / $2.40 for Qwen3.5 Plus.
- Qwen3.5 Plus accepts more context: 1M tokens versus 400K.
Side by side
| GPT-5 Mini | Qwen3.5 Plus | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 41.8 | 42.9 |
| Released | 2025-08-07 | 2026-02-16 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 1M |
| Max output | 128K | 66K |
| Input $ / M tokens | $0.25 | $0.40 |
| Output $ / M tokens | $2 | $2.40 |
| Results tracked | 60 | 15 |
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Category by category
Coding Not comparable
GPT-5 Mini: 40.1 (#146), Qwen3.5 Plus: —
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| ALE-Bench | 799.77 | 621.92 |
| SWE-bench Verified | 64.7% | — |
| SWE-bench Verified (bash only) | 59.8% | — |
| SWE-bench Multilingual | 39.7% | — |
| SciCode | 39.2% | — |
| WeirdML | 52.7% | — |
| LMArena Coding | 1406 | — |
| AlgoTune | 1.38 | — |
Agentic & Tool Use Not comparable
GPT-5 Mini: 31.1 (#70), Qwen3.5 Plus: —
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | -31.18 | 0.54 |
| Terminal-Bench | 34.8% | — |
| Berkeley Function Calling Leaderboard | 55.5% | — |
Reasoning Qwen3.5 Plus leads
GPT-5 Mini: 23.9 (#168), Qwen3.5 Plus: 32.8 (#74)
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| Chess Puzzles | 30% | 22% |
| Mystery Game Puzzles | 10% | 17% |
| DTBench | 80.5% | 80.5% |
| LMCA | 34.2% | 36.4% |
| Epoch Capabilities Index | 145.52 | 146.78 |
| ARC-AGI-2 | 4.4% | — |
| Kagi LLM Benchmark | 70.3% | — |
| ARC-AGI-1 | 54.3% | — |
| CritPt | 0% | — |
| EnigmaEval | 8.2% | — |
| LMArena Hard Prompts | 1380 | — |
| ForecastBench | 61 | — |
Math Qwen3.5 Plus leads
GPT-5 Mini: 46.7 (#69), Qwen3.5 Plus: 49.6 (#61)
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 86.7% | 86.7% |
| FrontierMath (Feb 2025 set) | 27.2% | 21% |
| FrontierMath Tier 4 (v1) | 6.3% | 2.1% |
| FrontierMath (Tiers 1-3) | 46.7% | — |
| FrontierMath Tier 4 | 12.2% | — |
| ProofBench | 9% | — |
| Omni-MATH | 72.2% | — |
| LMArena Math | 1378 | — |
| MATH Level 5 | 97.8% | — |
Knowledge Too close to call
GPT-5 Mini: 45.6 (#86), Qwen3.5 Plus: 46.0 (#83)
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | 75% | 84.8% |
| SimpleQA Verified | 21.6% | 25.4% |
| Vectara Hallucination Rate | 12.9% | 10.7% |
| Humanity's Last Exam | 19.4% | — |
| MMLU-Pro | 83.5% | — |
| Confabulations | 13.3% | — |
| GPQA (HELM) | 75.6% | — |
| LMArena Expert | 1379 | — |
Multimodal Not comparable
GPT-5 Mini: 35.6 (#85), Qwen3.5 Plus: —
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| LMArena Vision | 1202 | — |
| VPCT | 40.2% | — |
Multilingual Not comparable
GPT-5 Mini: 48.9 (#137), Qwen3.5 Plus: —
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1363 | — |
| LMArena Chinese | 1385 | — |
| LMArena French | 1386 | — |
| LMArena German | 1366 | — |
| LMArena Japanese | 1341 | — |
| LMArena Korean | 1308 | — |
| LMArena Russian | 1362 | — |
| LMArena Spanish | 1355 | — |
Instruction Following Not comparable
GPT-5 Mini: 76.2 (#46), Qwen3.5 Plus: —
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| IFEval | 92.7% | — |
| LMArena Instruction Following | 1357 | — |
Long Context Qwen3.5 Plus leads
GPT-5 Mini: 41.9 (#132), Qwen3.5 Plus: 43.0 (#113)
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| Fiction.LiveBench | 69.4% | — |
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1355 | — |
Writing & Preference Not comparable
GPT-5 Mini: 55.2 (#148), Qwen3.5 Plus: —
| Benchmark | GPT-5 Mini | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1373 | — |
| LMArena Creative Writing | 1325 | — |
| Short-Story Creative Writing | 83.1% | — |
| EQ-Bench Creative Writing | 1313 | — |
| WildBench | 85.5% | — |
| LMArena Multi-Turn | 1363 | — |
Frequently asked questions
Is GPT-5 Mini better than Qwen3.5 Plus?
Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 41.8 on the Noometry Index.
Which is cheaper, GPT-5 Mini or Qwen3.5 Plus?
GPT-5 Mini is cheaper. It lists at $0.25 per million input tokens and $2 per million output tokens; Qwen3.5 Plus lists at $0.40 and $2.40.
Which has the bigger context window?
Qwen3.5 Plus does, with 1M tokens against 400K.
How many benchmarks do GPT-5 Mini and Qwen3.5 Plus share?
13 benchmarks have published results for both models. GPT-5 Mini has 60 scored results on Noometry and Qwen3.5 Plus has 15.