Xiaomi: MiMo-V2.5-Pro wins on more metrics (7 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-5.4 Nano | Xiaomi: MiMo-V2.5-Pro |
|---|---|---|
| Intelligence Index | 38.2 | 42.2✓ |
| Coding Index | 43.9 | 45.5✓ |
| GPQA Diamond | 82% | 87%✓ |
| Design Arena Elo | — | 1335✓ |
| Speed (tokens/sec) | 59✓ | 27 |
| Latency | 553ms | 276ms✓ |
| Input price /M | $0.200✓ | $0.435 |
| Output price /M | $1.25 | $0.870✓ |
| Context window | 400K | 1.0M✓ |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSON |