GPT-5.5 Pro vs Qwen3 6
GPT-5.5 Pro 
Qwen3 6 Verdict
- GPT-5.5 Pro (xhigh) leads on quality: 67.1 vs 63.3.
- GPT-5.5 Pro (xhigh) is stronger in maths, reasoning.
- Qwen3 6 (max) is stronger in agents & tools, coding, composite, human preference, instruction following, knowledge, long context.
- Qwen3 6 (max) is 23× cheaper ($2.96 vs $67.50 per 1M blended).
- Qwen3 6 (max) streams 15.7× faster (63 vs 4 tokens per second).
| Metric | GPT-5.5 Pro (xhigh) | Qwen3 6 (max) |
|---|---|---|
| BenchLeader Index | 67.1 | 63.3 |
| Maths score | 74.5 | 65.9 |
| Reasoning score | 80.1 | 59.1 |
| Agents & tools score | – | 71.9 |
| Coding score | – | 58.1 |
| Composite score | – | 64.9 |
| Human preference score | – | 65.7 |
| Instruction following score | – | 74.4 |
| Knowledge score | – | 64.0 |
| Long context score | – | 66.8 |
| Blended price $/M | $67.50 | $2.96 |
| Output speed | 4 tok/s | 63 tok/s |
| Time to first answer | 3.5 s | 35.0 s |
| Context window | 1.1M | 246k |
| GPQA Diamond | – | 87.4% |
| FrontierMath Tiers 1–3 | 87.7% | – |
| FrontierMath Tier 4 | 78.0% | – |
| OTIS Mock AIME | – | 91.1% |
| SWE-bench Verified (Epoch) | – | 76.7% |
| SimpleQA Verified | – | 52.0% |
| SimpleBench | – | 63.0% |
| Epoch Capabilities Index | – | 149.3 |
| LMArena Text | – | 1460 |
| LMArena Hard Prompts | – | 1482 |
| LMArena Coding | – | 1509 |
| LMArena WebDev | – | 1479 |
| AA Intelligence Index | – | 28.4 |
| IFBench | – | 76.6% |
| AA-LCR | – | 80.7% |
| AA-Omniscience | – | 9.2 |
| Terminal-Bench Hard | – | 43.9% |
| GPQA Diamond (AA) | – | 88.8% |
| Humanity's Last Exam (AA) | – | 30.8% |
| τ²-Bench Telecom (AA) | – | 95.9% |
| CorpFin | – | 66.5% |
| SWE-bench (Vals) | – | 72.8% |
| ARC-AGI-1 | 95.0% | – |
| ARC-AGI-2 | 84.2% | – |
| CritPt | 30.6% | 3.7% |
| CaseLaw v2 | – | 47.9% |
| Terminal-Bench 2.0 (Vals) | – | 51.7% |
| LMArena Maths | – | 1475 |
| LMArena Creative Writing | – | 1438 |
| LMArena Instruction Following | – | 1449 |
| LMArena Multi-turn | – | 1469 |
| LMArena Longer Queries | – | 1474 |
| Chess Puzzles | – | 20.0% |
| LMCA | 53.9% | 42.5% |
| DTBench | 96.0% | 87.2% |
| Vending-Bench 2 | – | 4254.2 |
Data as of 2026-09-19. Best configuration of each model; every score links to its source on the model pages.
GPT-5.5 Pro vs Qwen3 6: questions
- Is GPT-5.5 Pro better than Qwen3 6?
- GPT-5.5 Pro (xhigh) leads on quality: 67.1 vs 63.3. The BenchLeader Index combines every independent quality benchmark; GPT-5.5 Pro (xhigh) is ahead overall as of 2026-09-19, but check the category scores for your use.
- Which is cheaper, GPT-5.5 Pro or Qwen3 6?
- Qwen3 6 is cheaper: $2.96 against $67.50 per million tokens, blended at three input tokens per output token.
- Which is faster, GPT-5.5 Pro or Qwen3 6?
- Qwen3 6 streams faster: 63 against 4 output tokens per second.
- Which has the larger context window?
- GPT-5.5 Pro accepts more context: 1.1M against 246k tokens.