OpenAI: GPT-5.6 Sol vs xAI: Grok 4.5
OpenAI: GPT-5.6 Sol and xAI: Grok 4.5 are evenly matched; the right pick depends on your priorities.
| Metric | OpenAI: GPT-5.6 Sol | xAI: Grok 4.5 |
|---|---|---|
| Intelligence Index | 58.9✓ | 53.8 |
| Coding Index | 77.4✓ | 72.4 |
| GPQA Diamond | 94%✓ | 93% |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 48 | 71✓ |
| Latency | 3.7s | 1.3s✓ |
| Input price /M | $5.00 | $2.00✓ |
| Output price /M | $30.00 | $6.00✓ |
| Context window | 1.1M✓ | 500K |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSONVision |