GPT-5.2 Codex
JSON →A further refined Codex model with enhanced support for multi-language programming and API integration.
Specs
context window 272K tokens
max output 128K tokens
input price $1.75 / 1M tokens
output price $14 / 1M tokens
Capabilities
code-generationfunction-callingstreamingjson-modetool-usevisionprompt-cachingreasoning
Dates
releasedJan 2026
knowledge cutoffAug 2025
Resources
API
full doc /v1/models/gpt-5.2-codex