OpenAI: GPT-5.4 Nano wins on more metrics (5 of 8), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Kwaipilot: KAT-Coder-Pro V2 | OpenAI: GPT-5.4 Nano |
|---|---|---|
| Intelligence Index | 43.8 | 44.0✓ |
| Coding Index | 45.6✓ | 43.9 |
| GPQA Diamond | 86%✓ | 82% |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 46 | 63✓ |
| Latency | 2.4s | 610ms✓ |
| Input price /M | $0.300 | $0.200✓ |
| Output price /M | $1.20✓ | $1.25 |
| Context window | 256K | 400K✓ |
| Capabilities | ToolsJSON | ReasoningToolsJSONVision |