Models / openai / GPT-5.2 Codex

GPT-5.2 Codex

JSON →
openaillm

A further refined Codex model with enhanced support for multi-language programming and API integration.

textcode-generationfunction-callingstreamingjson-modetool-usevisionprompt-cachingreasoning
homepage ↗docs ↗
Specs
Context & limits
272K
context window
128K
max output
Lifecycle
Dates
released2026-01-20
knowledge cutoff2025-08-01
Resources
homepagehttps://openai.com/index/gpt-5/ ↗
docshttps://platform.openai.com/docs/models ↗