OpenAI: GPT-5.6 Sol Pro vs OpenAI: GPT Chat Latest
OpenAI: GPT-5.6 Sol Pro wins on more metrics (2 of 3), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-5.6 Sol Pro | OpenAI: GPT Chat Latest |
|---|---|---|
| Intelligence Index | — | — |
| Coding Index | — | — |
| GPQA Diamond | — | — |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 132✓ | 65 |
| Latency | 11.2s | 1.1s✓ |
| Input price /M | $5.00 | $5.00 |
| Output price /M | $30.00 | $30.00 |
| Context window | 1.1M✓ | 400K |
| Capabilities | ReasoningToolsJSONVision | ToolsJSONVision |