GPT-5.4 Pro vs Qwen3.5 397B A17B
GPT-5.4 Pro 
Qwen3.5 397B A17B Verdict
- GPT-5.4 Pro leads on quality: 64.3 vs 57.0.
- GPT-5.4 Pro is stronger in knowledge, multimodal, reasoning.
- Qwen3.5 397B A17B is stronger in instruction following, agents & tools, coding, composite, human preference, long context, maths.
- Qwen3.5 397B A17B is 174× cheaper ($0.387 vs $67.50 per 1M blended).
- Qwen3.5 397B A17B streams 83.8× faster (84 vs 1 tokens per second).
| Metric | GPT-5.4 Pro | Qwen3.5 397B A17B |
|---|---|---|
| BenchLeader Index | 64.3 | 57.0 |
| Instruction following score | 67.3 | 73.1 |
| Knowledge score | 73.6 | 45.9 |
| Multimodal score | 69.8 | 60.8 |
| Reasoning score | 75.3 | 63.0 |
| Agents & tools score | – | 64.5 |
| Coding score | – | 51.6 |
| Composite score | – | 48.3 |
| Human preference score | – | 63.6 |
| Long context score | – | 62.5 |
| Maths score | – | 50.1 |
| Blended price $/M | $67.50 | $0.387 |
| Output speed | 1 tok/s | 84 tok/s |
| Time to first answer | 6.3 s | 40.2 s |
| Context window | 1.1M | 262k |
| GPQA Diamond | – | 85.9% |
| FrontierMath Tiers 1–3 | – | 29.5% |
| OTIS Mock AIME | – | 88.9% |
| Humanity's Last Exam | 44.3% | – |
| SimpleBench | 74.1% | – |
| Epoch Capabilities Index | 158.9 | 147.0 |
| LMArena Text | – | 1442 |
| LMArena Hard Prompts | – | 1464 |
| LMArena Coding | – | 1491 |
| LMArena WebDev | – | 1399 |
| LMArena Vision | – | 1265 |
| AA Intelligence Index | – | 19.1 |
| IFBench | – | 78.8% |
| AA-LCR | – | 77.3% |
| MMMU-Pro | – | 77.3% |
| AA-Omniscience | – | -30.8 |
| Terminal-Bench Hard | – | 40.9% |
| GPQA Diamond (AA) | – | 89.3% |
| Humanity's Last Exam (AA) | – | 29.0% |
| SciCode (AA) | – | 44.8% |
| τ²-Bench Telecom (AA) | – | 95.6% |
| AIME 2026 | – | 94.2% |
| HMMT February 2026 | – | 87.9% |
| MultiChallenge | 69.2% | – |
| VISTA | 53.9% | – |
| MultiNRC | 62.3% | – |
| TutorBench | 56.6% | – |
Data as of 2026-09-13. Best configuration of each model; every score links to its source on the model pages.
GPT-5.4 Pro vs Qwen3.5 397B A17B: questions
- Is GPT-5.4 Pro better than Qwen3.5 397B A17B?
- GPT-5.4 Pro leads on quality: 64.3 vs 57.0. The BenchLeader Index combines every independent quality benchmark; GPT-5.4 Pro is ahead overall as of 2026-09-13, but check the category scores for your use.
- Which is cheaper, GPT-5.4 Pro or Qwen3.5 397B A17B?
- Qwen3.5 397B A17B is cheaper: $0.387 against $67.50 per million tokens, blended at three input tokens per output token.
- Which is faster, GPT-5.4 Pro or Qwen3.5 397B A17B?
- Qwen3.5 397B A17B streams faster: 84 against 1 output tokens per second.
- Which has the larger context window?
- GPT-5.4 Pro accepts more context: 1.1M against 262k tokens.