OpenAI: GPT-5.2 vs OpenAI: GPT-5.2-Codex
OpenAI: GPT-5.2 wins on more metrics (3 of 4), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-5.2 | OpenAI: GPT-5.2-Codex |
|---|---|---|
| Intelligence Index | 42.2✓ | 40.1 |
| Coding Index | — | — |
| GPQA Diamond | 90%✓ | 90% |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 57 | 64✓ |
| Latency | 711ms✓ | 1.6s |
| Input price /M | $1.75 | $1.75 |
| Output price /M | $14.00 | $14.00 |
| Context window | 400K | 400K |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSONVision |