Model comparison
GPT-5.2 vs Qwen3.5 397B-A17B
GPT-5.2 is the stronger model overall, scoring 54.1 to 46.0 on the Noometry Index. Qwen3.5 397B-A17B costs 3.6× less per token, which makes it the better buy when GPT-5.2's lead doesn't matter for your workload.
Last verified . 34 shared benchmarks.
Alibaba (Qwen)Summary
- They share 34 benchmarks with published results for both. GPT-5.2 scores higher in 7 categories and Qwen3.5 397B-A17B in 3 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.2 leads 50.2 to 34.5.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 67.4% for GPT-5.2 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 $1.75 / $14 for GPT-5.2.
- GPT-5.2 accepts more context: 400K tokens versus 262K.
- Qwen3.5 397B-A17B has downloadable open weights; the other is API-only.
Side by side
| GPT-5.2 | Qwen3.5 397B-A17B | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 54.1 | 46.0 |
| Released | 2025-12-11 | 2026-02-01 |
| Weights | Proprietary | Open |
| Context window | 400K | 262K |
| Max output | 128K | 66K |
| Input $ / M tokens | $1.75 | $0.60 |
| Output $ / M tokens | $14 | $3.60 |
| Results tracked | 67 | 36 |
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Category by category
Coding GPT-5.2 leads
GPT-5.2: 51.6 (#37), Qwen3.5 397B-A17B: 42.0 (#114)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena WebDev | 1416 | 1400 |
| LMArena Coding | 1447 | 1465 |
| SWE-bench Verified | 73.8% | — |
| SWE-bench Verified (bash only) | 72.8% | — |
| SWE-bench Multilingual | 66.7% | — |
| GSO | 27.4% | — |
| WeirdML | 72.2% | — |
| ALE-Bench | 1,294 | — |
| AlgoTune | 2.05 | — |
Agentic & Tool Use GPT-5.2 leads
GPT-5.2: 40.2 (#24), Qwen3.5 397B-A17B: 33.3 (#53)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| τ²-bench Airline | 83% | 81.5% |
| τ²-bench Banking | 32.2% | 9.8% |
| τ²-bench Retail | 81.6% | 84.4% |
| τ²-bench Telecom | 89.7% | 97.8% |
| Terminal-Bench | 64.9% | — |
| APEX-Agents | — | 24.9% |
| Berkeley Function Calling Leaderboard | 55.9% | — |
| GDPval | 49.7% | — |
| Remote Labor Index | 2.5% | — |
| DeepResearch Bench | 41.1% | — |
| LMArena Search | 1207 | — |
| METR Time Horizons | 75.3% | — |
| Vending-Bench 2 | 3,591 | — |
Reasoning GPT-5.2 leads
GPT-5.2: 50.2 (#35), Qwen3.5 397B-A17B: 34.5 (#70)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| Kagi LLM Benchmark | 73.3% | 73.7% |
| NYT Connections (extended) | 83.6% | 58.9% |
| Chess Puzzles | 49% | 13% |
| LMArena Hard Prompts | 1445 | 1448 |
| Mystery Game Puzzles | 23% | 18% |
| DTBench | 90.9% | 87.5% |
| LMCA | 43.9% | 37.9% |
| Epoch Capabilities Index | 153.45 | 146.65 |
| ARC-AGI-2 | 52.9% | — |
| SimpleBench | 45.8% | — |
| ARC-AGI-1 | 86.2% | — |
| EnigmaEval | 10.4% | — |
| Thematic Generalization | — | 65.1% |
| EBR-Bench | 23% | — |
| ForecastBench | 60.1 | — |
Math GPT-5.2 leads
GPT-5.2: 60.0 (#38), Qwen3.5 397B-A17B: 46.1 (#73)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 67.4% | 31.2% |
| OTIS Mock AIME 2024-2025 | 96.1% | 88.9% |
| LMArena Math | 1440 | 1454 |
| FrontierMath Tier 4 | 31.7% | — |
| MathArena Final-Answer Competitions | 72% | — |
| ProofBench | 15% | — |
| FrontierMath (Feb 2025 set) | 40.7% | — |
| FrontierMath Tier 4 (v1) | 18.8% | — |
Knowledge GPT-5.2 leads
GPT-5.2: 59.3 (#32), Qwen3.5 397B-A17B: 53.3 (#58)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| GPQA Diamond | 91.4% | 86.4% |
| LMArena Expert | 1445 | 1462 |
| Humanity's Last Exam | 27.8% | — |
| SimpleQA Verified | 37.1% | — |
| Vectara Hallucination Rate | 8.4% | — |
Multimodal GPT-5.2 leads
GPT-5.2: 51.3 (#7), Qwen3.5 397B-A17B: 40.7 (#44)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Vision | 1268 | 1263 |
| VPCT | 84% | — |
| Furniture Assembly | 38.3% | — |
| LMArena Document | 1405 | — |
Multilingual Too close to call
GPT-5.2: 53.4 (#67), Qwen3.5 397B-A17B: 53.7 (#59)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Non-English | 1425 | 1430 |
| LMArena Chinese | 1460 | 1500 |
| LMArena French | 1455 | 1461 |
| LMArena German | 1448 | 1447 |
| LMArena Japanese | 1420 | 1426 |
| LMArena Korean | 1392 | 1384 |
| LMArena Russian | 1440 | 1429 |
| LMArena Spanish | 1433 | 1441 |
Instruction Following Too close to call
GPT-5.2: 74.7 (#89), Qwen3.5 397B-A17B: 75.0 (#77)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Instruction Following | 1417 | 1424 |
Long Context Too close to call
GPT-5.2: 44.0 (#78), Qwen3.5 397B-A17B: 44.1 (#74)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Longer Query | 1428 | 1442 |
| CL-bench | 18.2% | — |
Writing & Preference GPT-5.2 leads
GPT-5.2: 66.8 (#32), Qwen3.5 397B-A17B: 62.3 (#79)
| Benchmark | GPT-5.2 | Qwen3.5 397B-A17B |
|---|---|---|
| LMArena Text | 1439 | 1438 |
| LMArena Creative Writing | 1401 | 1401 |
| EQ-Bench Creative Writing | 1703 | 1478 |
| LMArena Multi-Turn | 1458 | 1446 |
Frequently asked questions
Is GPT-5.2 better than Qwen3.5 397B-A17B?
GPT-5.2 is the stronger model overall, scoring 54.1 to 46.0 on the Noometry Index. Qwen3.5 397B-A17B costs 3.6× less per token, which makes it the better buy when GPT-5.2's lead doesn't matter for your workload.
Which is cheaper, GPT-5.2 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-5.2 lists at $1.75 and $14.
Is GPT-5.2 or Qwen3.5 397B-A17B better for coding?
GPT-5.2 scores higher on coding benchmarks: 51.6 versus 42.0 in the Noometry coding category.
Which has the bigger context window?
GPT-5.2 does, with 400K tokens against 262K.
How many benchmarks do GPT-5.2 and Qwen3.5 397B-A17B share?
34 benchmarks have published results for both models. GPT-5.2 has 67 scored results on Noometry and Qwen3.5 397B-A17B has 36.