Model comparison
GPT-5 Pro vs Qwen3.5 397B-A17B
GPT-5 Pro and Qwen3.5 397B-A17B score almost the same on the Noometry Index (46.4 vs 46.0), so choose on price, context window or the category you care about most.
Last verified . 3 shared benchmarks.
Alibaba (Qwen)Summary
- They share 3 benchmarks with published results for both. GPT-5 Pro scores higher in 4 categories and Qwen3.5 397B-A17B in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5 Pro leads 38.9 to 34.5.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 55.8% for GPT-5 Pro and 31.2% for Qwen3.5 397B-A17B.
- Qwen3.5 397B-A17B is cheaper at $0.60 / $3.60 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
- GPT-5 Pro accepts more context: 400K tokens versus 262K.
- Qwen3.5 397B-A17B has downloadable open weights; the other is API-only.
Side by side
| GPT-5 Pro | Qwen3.5 397B-A17B | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 46.4 | 46.0 |
| Released | 2025-10-06 | 2026-02-01 |
| Weights | Proprietary | Open |
| Context window | 400K | 262K |
| Max output | 272K | 66K |
| Input $ / M tokens | $15 | $0.60 |
| Output $ / M tokens | $120 | $3.60 |
| Results tracked | 12 | 36 |
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Category by category
Coding GPT-5 Pro leads
GPT-5 Pro: 44.0 (#80), Qwen3.5 397B-A17B: 42.0 (#114)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena WebDev | — | 1400 |
| WeirdML | 60.4% | — |
| LMArena Coding | — | 1465 |
| AlgoTune | 1.31 | — |
Agentic & Tool Use Not comparable
GPT-5 Pro: —, Qwen3.5 397B-A17B: 33.3 (#53)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| APEX-Agents | — | 24.9% |
| τ²-bench Airline | — | 81.5% |
| τ²-bench Banking | — | 9.8% |
| τ²-bench Retail | — | 84.4% |
| τ²-bench Telecom | — | 97.8% |
Reasoning GPT-5 Pro leads
GPT-5 Pro: 38.9 (#62), Qwen3.5 397B-A17B: 34.5 (#70)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| Kagi LLM Benchmark | 76.8% | 73.7% |
| Epoch Capabilities Index | 150.28 | 146.65 |
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| NYT Connections (extended) | — | 58.9% |
| ARC-AGI-1 | 70.2% | — |
| Chess Puzzles | — | 13% |
| EnigmaEval | 18.8% | — |
| Thematic Generalization | — | 65.1% |
| LMArena Hard Prompts | — | 1448 |
| Mystery Game Puzzles | — | 18% |
| DTBench | — | 87.5% |
| LMCA | — | 37.9% |
Math GPT-5 Pro leads
GPT-5 Pro: 48.5 (#63), Qwen3.5 397B-A17B: 46.1 (#73)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 55.8% | 31.2% |
| FrontierMath Tier 4 | 19.5% | — |
| OTIS Mock AIME 2024-2025 | — | 88.9% |
| LMArena Math | — | 1454 |
| FrontierMath Tier 4 (v1) | 14.6% | — |
Knowledge GPT-5 Pro leads
GPT-5 Pro: 56.7 (#42), Qwen3.5 397B-A17B: 53.3 (#58)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| GPQA Diamond | — | 86.4% |
| Humanity's Last Exam | 31.6% | — |
| LMArena Expert | — | 1462 |
Multimodal Not comparable
GPT-5 Pro: —, Qwen3.5 397B-A17B: 40.7 (#44)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Vision | — | 1263 |
Multilingual Not comparable
GPT-5 Pro: —, Qwen3.5 397B-A17B: 53.7 (#59)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Non-English | — | 1430 |
| LMArena Chinese | — | 1500 |
| LMArena French | — | 1461 |
| LMArena German | — | 1447 |
| LMArena Japanese | — | 1426 |
| LMArena Korean | — | 1384 |
| LMArena Russian | — | 1429 |
| LMArena Spanish | — | 1441 |
Instruction Following Not comparable
GPT-5 Pro: —, Qwen3.5 397B-A17B: 75.0 (#77)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Instruction Following | — | 1424 |
Long Context Not comparable
GPT-5 Pro: —, Qwen3.5 397B-A17B: 44.1 (#74)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Longer Query | — | 1442 |
Writing & Preference Not comparable
GPT-5 Pro: —, Qwen3.5 397B-A17B: 62.3 (#79)
| Benchmark | GPT-5 Pro | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Text | — | 1438 |
| LMArena Creative Writing | — | 1401 |
| EQ-Bench Creative Writing | — | 1478 |
| LMArena Multi-Turn | — | 1446 |
Frequently asked questions
Is GPT-5 Pro better than Qwen3.5 397B-A17B?
GPT-5 Pro and Qwen3.5 397B-A17B score almost the same on the Noometry Index (46.4 vs 46.0), so choose on price, context window or the category you care about most.
Which is cheaper, GPT-5 Pro or Qwen3.5 397B-A17B?
Qwen3.5 397B-A17B is cheaper. It lists at $0.60 per million input tokens and $3.60 per million output tokens; GPT-5 Pro lists at $15 and $120.
Is GPT-5 Pro or Qwen3.5 397B-A17B better for coding?
GPT-5 Pro scores higher on coding benchmarks: 44.0 versus 42.0 in the Noometry coding category.
Which has the bigger context window?
GPT-5 Pro does, with 400K tokens against 262K.
How many benchmarks do GPT-5 Pro and Qwen3.5 397B-A17B share?
3 benchmarks have published results for both models. GPT-5 Pro has 12 scored results on Noometry and Qwen3.5 397B-A17B has 36.