OpenAI: GPT-5.3-Codex vs Xiaomi: MiMo-V2.5
Xiaomi: MiMo-V2.5 wins on more metrics (5 of 8), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-5.3-Codex | Xiaomi: MiMo-V2.5 |
|---|---|---|
| Intelligence Index | 44.3✓ | 40.1 |
| Coding Index | — | — |
| GPQA Diamond | 92%✓ | 85% |
| Design Arena Elo | 1206 | 1303✓ |
| Speed (tokens/sec) | 61✓ | 48 |
| Latency | 2.0s | 709ms✓ |
| Input price /M | $1.75 | $0.105✓ |
| Output price /M | $14.00 | $0.280✓ |
| Context window | 400K | 1.0M✓ |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSONVisionAudio |