GPT-5.5 vs Qwen3 6
GPT-5.5 
Qwen3 6 Verdict
- GPT-5.5 leads on quality: 66.7 vs 63.3.
- GPT-5.5 is stronger in composite, human preference, knowledge, long context, multimodal, reasoning.
- Qwen3 6 (max) is stronger in agents & tools, coding, instruction following, maths.
- Qwen3 6 (max) is 3.8× cheaper ($2.96 vs $11.25 per 1M blended).
- GPT-5.5 streams 1.4× faster (85 vs 59 tokens per second).
| Metric | GPT-5.5 | Qwen3 6 (max) |
|---|---|---|
| BenchLeader Index | 66.7 | 63.3 |
| Agents & tools score | 68.5 | 72.0 |
| Coding score | 57.2 | 58.2 |
| Composite score | 77.8 | 64.9 |
| Human preference score | 67.9 | 65.9 |
| Instruction following score | 73.6 | 74.2 |
| Knowledge score | 73.9 | 64.0 |
| Long context score | 68.8 | 66.9 |
| Multimodal score | 64.9 | – |
| Reasoning score | 70.1 | 63.2 |
| Maths score | – | 64.2 |
| Blended price $/M | $11.25 | $2.96 |
| Output speed | 85 tok/s | 59 tok/s |
| Time to first answer | 58.6 s | 38.5 s |
| Context window | 1.1M | 246k |
| GPQA Diamond | – | 87.4% |
| OTIS Mock AIME | – | 91.1% |
| SWE-bench Verified (Epoch) | – | 76.7% |
| SimpleQA Verified | – | 52.0% |
| Terminal-Bench | 84.7% | – |
| SimpleBench | 69.0% | 63.0% |
| Remote Labor Index | 6.3% | – |
| APEX-Agents | 38.5% | – |
| FrontierCode | 43.0% | – |
| Epoch Capabilities Index | 159.1 | 149.3 |
| LMArena Text | 1477 | 1460 |
| LMArena Hard Prompts | 1498 | 1482 |
| LMArena Coding | 1509 | 1509 |
| LMArena WebDev | 1458 | 1479 |
| LMArena Vision | 1296 | – |
| LMArena Agent | 3 | – |
| AA Intelligence Index | 38.6 | 28.4 |
| IFBench | 75.8% | 76.6% |
| AA-LCR | 84.3% | 80.7% |
| MMMU-Pro | 79.9% | – |
| AA-Omniscience | 20.5 | 9.2 |
| Terminal-Bench Hard | 60.6% | 43.9% |
| GPQA Diamond (AA) | 93.5% | 88.8% |
| Humanity's Last Exam (AA) | 45.8% | 30.8% |
| SciCode (AA) | 55.8% | – |
| τ²-Bench Telecom (AA) | 93.9% | 95.9% |
| CorpFin | – | 66.5% |
| SWE-bench (Vals) | – | 72.8% |
| HiL-Bench | 39.7% | – |
| EQ-Bench 4 | 1315 | – |
| Kagi LLM Benchmark | 88.8% | – |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
GPT-5.5 vs Qwen3 6: questions
- Is GPT-5.5 better than Qwen3 6?
- GPT-5.5 leads on quality: 66.7 vs 63.3. The BenchLeader Index combines every independent quality benchmark; GPT-5.5 is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is GPT-5.5 better than Qwen3 6 for coding?
- Qwen3 6 scores higher in coding (58 vs 57 on the category index, where 50 is average).
- Is GPT-5.5 better than Qwen3 6 for agentic tasks?
- Qwen3 6 scores higher in agentic tasks (72 vs 69 on the category index, where 50 is average).
- Which is cheaper, GPT-5.5 or Qwen3 6?
- Qwen3 6 is cheaper: $2.96 against $11.25 per million tokens, blended at three input tokens per output token.
- Which is faster, GPT-5.5 or Qwen3 6?
- GPT-5.5 streams faster: 85 against 59 output tokens per second.
- Which has the larger context window?
- GPT-5.5 accepts more context: 1.1M against 246k tokens.