OpenAI: GPT-5.5 wins on more metrics (6 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-5.5 | Qwen: Qwen3.6 Plus |
|---|---|---|
| Intelligence Index | 56.7✓ | 50.0 |
| Coding Index | 56.2✓ | 42.9 |
| GPQA Diamond | 93%✓ | 88% |
| Design Arena Elo | 1354✓ | 1288 |
| Speed (tokens/sec) | 37✓ | 36 |
| Latency | 3.7s | 1.2s✓ |
| Input price /M | $5.00 | $0.325✓ |
| Output price /M | $30.00 | $1.95✓ |
| Context window | 1.1M✓ | 1M |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSONVision |