LATEST MODEL
GPT-5.2-Codex
OpenAI Released December 2025
OpenAI's specialized coding model for Codex agent, tuned for long-horizon multi-file work
GPT-5.2-Codex
OpenAI • December 2025
Latest
Training Data
Up to August 2025
GPT-5.2-Codex
December 2025
Parameters
~1.7 trillion
Training Method
Code-specialized Training
Context Window
400,000 tokens
Knowledge Cutoff
August 2025
Key Features
Long-horizon Coding • Multi-file Refactors • Context Compaction • Enhanced Cybersecurity
Capabilities
Coding: Maximum
Refactoring: Outstanding
Migrations: Outstanding
What's New in This Version
Tuned for long-horizon, multi-file work with context compaction and enhanced cybersecurity capabilities
OpenAI's specialized coding model for Codex agent, tuned for long-horizon multi-file work
What's New in This Version
Tuned for long-horizon, multi-file work with context compaction and enhanced cybersecurity capabilities
Technical Specifications
Parameters ~1.7 trillion
Context Window 400,000 tokens
Training Method Code-specialized Training
Knowledge Cutoff August 2025
Training Data Up to August 2025
Key Features
Long-horizon Coding Multi-file Refactors Context Compaction Enhanced Cybersecurity
Capabilities
Coding: Maximum
Refactoring: Outstanding
Migrations: Outstanding
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