Model comparison
GPT-5 Pro vs Qwen3.5 Plus
GPT-5 Pro is the stronger model overall, scoring 46.4 to 42.9 on the Noometry Index. Qwen3.5 Plus costs 46× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.
Last verified . 2 shared benchmarks.
Alibaba (Qwen)Summary
- They share 2 benchmarks with published results for both. GPT-5 Pro scores higher in 2 categories and Qwen3.5 Plus in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5 Pro leads 56.7 to 46.0.
- Qwen3.5 Plus is cheaper at $0.40 / $2.40 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
- Qwen3.5 Plus accepts more context: 1M tokens versus 400K.
Side by side
| GPT-5 Pro | Qwen3.5 Plus | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 46.4 | 42.9 |
| Released | 2025-10-06 | 2026-02-16 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | 1M |
| Max output | 272K | 66K |
| Input $ / M tokens | $15 | $0.40 |
| Output $ / M tokens | $120 | $2.40 |
| Results tracked | 12 | 15 |
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Category by category
Coding Not comparable
GPT-5 Pro: 44.0 (#80), Qwen3.5 Plus: —
Agentic & Tool Use Not comparable
GPT-5 Pro: —, Qwen3.5 Plus: —
| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |
Reasoning GPT-5 Pro leads
GPT-5 Pro: 38.9 (#62), Qwen3.5 Plus: 32.8 (#74)
| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| Epoch Capabilities Index | 150.28 | 146.78 |
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| Kagi LLM Benchmark | 76.8% | — |
| ARC-AGI-1 | 70.2% | — |
| Chess Puzzles | — | 22% |
| EnigmaEval | 18.8% | — |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
Math Qwen3.5 Plus leads
GPT-5 Pro: 48.5 (#63), Qwen3.5 Plus: 49.6 (#61)
| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| FrontierMath Tier 4 (v1) | 14.6% | 2.1% |
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 19.5% | — |
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| FrontierMath (Feb 2025 set) | — | 21% |
Knowledge GPT-5 Pro leads
GPT-5 Pro: 56.7 (#42), Qwen3.5 Plus: 46.0 (#83)
| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| Humanity's Last Exam | 31.6% | — |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
Long Context Not comparable
GPT-5 Pro: —, Qwen3.5 Plus: 43.0 (#113)
| Benchmark | GPT-5 Pro | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
Frequently asked questions
Is GPT-5 Pro better than Qwen3.5 Plus?
GPT-5 Pro is the stronger model overall, scoring 46.4 to 42.9 on the Noometry Index. Qwen3.5 Plus costs 46× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.
Which is cheaper, GPT-5 Pro 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 Pro lists at $15 and $120.
Which has the bigger context window?
Qwen3.5 Plus does, with 1M tokens against 400K.
How many benchmarks do GPT-5 Pro and Qwen3.5 Plus share?
2 benchmarks have published results for both models. GPT-5 Pro has 12 scored results on Noometry and Qwen3.5 Plus has 15.