NanoGPT
GPT 5.2 Codex
gpt-codex
Model ID openai/gpt-5.2-codex
Provider NanoGPT
Family gpt-codex
Status -
Knowledge Cutoff -
Release Date 2026-01-14
Input Modalities text, image, pdf
Output Modalities text
Context Window 400000
Input Limit 400000
Output Limit 128000
Tool Calling Yes
Reasoning Yes
Structured Output Yes
Temperature Control -
Open Weights No
Input Cost / 1M tokens $1.75
Output Cost / 1M tokens $14.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens -
Cache Write Cost / 1M tokens -