GPT-5.2 Codex

GPT-5.2 Codex: a gpt-codex model from OpenAI, ~400K context, knowledge cutoff 2025-08-31

Published

scheduleReleased：December 11, 2025

GPT-5.2 Codex is a gpt-codex model from OpenAI (~400K context, input around $1.75/1M tokens). Suitable for assistants, content generation, knowledge Q&A and business automation

descriptionOverview

Overview

GPT-5.2 Codex is provided by OpenAI, model ID gpt-5.2-codex

Key specs

Context: 400K tokens
Max output: 128K tokens
Knowledge cutoff: 2025-08-31
Input price: $1.75/1M
Output price: $14/1M

Best for

Consider GPT-5.2 Codex when comparing context length, pricing, multimodal support and relay availability

lightbulbUse cases

Image and multimodal Q&A
Visual content analysis
Document and screenshot understanding

thumb_upStrengths

Very long context (~400K), good for long documents and codebases
Supports image and multimodal input
High single-response output limit (~128K)

infoLimitations

Knowledge cutoff 2025-08-31; newer facts need external retrieval
Pricing and availability vary by upstream and relay; verify with official docs and tests

linkReferences

open_in_newhttps://platform.openai.com/docs/models