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GPT-5.2 Codex

ProprietaryMultimodal

About

GPT-5.2-Codex is OpenAI's agentic coding model built on GPT-5.2, released December 18, 2025. Optimized for long-horizon professional software engineering tasks including large refactors, multi-file changes, and codebase migrations. Features context compaction for handling tasks exceeding a single context window, enhanced vision for interpreting screenshots, diagrams, and UI, and strengthened safeguards for defensive cybersecurity workflows. Available to paid ChatGPT users and via the Responses API.

Capabilities

VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution

Rankings

Specifications

FamilyGPT-5
Released2025-12-18
ArchitectureDecoder Only
Specializationcoding
LicenseProprietary

Created by

Cutting-edge research and development.

San Francisco, California, United States
Founded 2015
Website