GPT-5.2-Codex vs GPT-5.3-Codex
OpenAI vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.3-Codex has the higher intelligence index (91.5 vs 89.9)
- •GPT-5.2-Codex is faster
| GPT-5.2-Codex | GPT-5.3-Codex | |
|---|---|---|
| Intelligence index | 89.9 | 91.5 |
| Developer | OpenAI | OpenAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 400,000 tokens | 400,000 tokens |
| Input price | $1.75 / 1M | $1.75 / 1M |
| Output price | $14.00 / 1M | $14.00 / 1M |
| Speed | 106 tok/s | 73 tok/s |
| Released | January 14, 2026 | February 24, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
Shared benchmarks
GPT-5.2-Codex
GPT-5.3-Codex
GPQA Diamond
89.9
91.5
Humanity’s Last Exam
33.5
39.9