OpenAI: GPT-5.4 wins on more metrics (5 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-5.4 | Xiaomi: MiMo-V2.5-Pro |
|---|---|---|
| Intelligence Index | 56.8✓ | 53.8 |
| Coding Index | 57.2✓ | 45.5 |
| GPQA Diamond | 92%✓ | 87% |
| Design Arena Elo | 1303 | 1334✓ |
| Speed (tokens/sec) | 62✓ | 38 |
| Latency | 982ms | 255ms✓ |
| Input price /M | $2.50 | $0.435✓ |
| Output price /M | $15.00 | $0.870✓ |
| Context window | 1.1M✓ | 1.0M |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSON |