MoonshotAI: Kimi K2.6 wins on more metrics (5 of 8), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | MoonshotAI: Kimi K2.6 | OpenAI: GPT-5.6 Luna |
|---|---|---|
| Intelligence Index | 44.2 | 51.2✓ |
| Coding Index | 61.8 | 71.4✓ |
| GPQA Diamond | 91% | 91% |
| Design Arena Elo | 1351✓ | — |
| Speed (tokens/sec) | 133✓ | 60 |
| Latency | 412ms✓ | 1.7s |
| Input price /M | $0.650✓ | $1.00 |
| Output price /M | $3.41✓ | $6.00 |
| Context window | 262K | 1.1M✓ |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSONVision |