# Addendum to GPT-5.2 System Card: GPT-5.2-Codex

DevFeed: [Addendum to GPT-5.2 System Card: GPT-5.2-Codex](<https://devfeed.tech/articles/addendum-to-gpt-5-2-system-card-gpt-5-2-codex-6419.md>)

Original publisher: [Read original article](<https://openai.com/index/gpt-5-2-codex-system-card>)

Published: 2025-12-18T00:00:00Z

Content type: article

Language: en

Sources: [OpenAI News](<https://devfeed.tech/sources/openai-news.md>)

Topics: [agentic-coding](<https://devfeed.tech/topics/agentic-coding.md>), [coding](<https://devfeed.tech/topics/coding.md>), [Software Engineering](<https://devfeed.tech/topics/software-engineering.md>), [codex](<https://devfeed.tech/topics/codex.md>), [Cybersecurity](<https://devfeed.tech/topics/cybersecurity.md>), [Windows](<https://devfeed.tech/topics/windows.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>)

Tags: [agentic](<https://devfeed.tech/tags/agentic.md>), [agentic-coding](<https://devfeed.tech/tags/agentic-coding.md>), [codex](<https://devfeed.tech/tags/codex.md>), [coding](<https://devfeed.tech/tags/coding.md>), [context](<https://devfeed.tech/tags/context.md>), [cybersecurity](<https://devfeed.tech/tags/cybersecurity.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [improvements](<https://devfeed.tech/tags/improvements.md>), [model](<https://devfeed.tech/tags/model.md>), [performance](<https://devfeed.tech/tags/performance.md>), [project](<https://devfeed.tech/tags/project.md>), [publication](<https://devfeed.tech/tags/publication.md>), [scale](<https://devfeed.tech/tags/scale.md>), [software](<https://devfeed.tech/tags/software.md>), [software-engineering](<https://devfeed.tech/tags/software-engineering.md>), [windows](<https://devfeed.tech/tags/windows.md>)

## AI overview

GPT-5.2-Codex is an agentic coding model optimized for complex software engineering. The system card describes improvements in long-horizon work, project-scale refactoring and migration tasks, Windows performance, and cybersecurity capabilities, along with model- and product-level safety measures.

## Source excerpt

GPT-5.2-Codex is our most advanced agentic coding model yet for complex, real-world software engineering. A version of GPT-5.2 optimized for agentic coding in Codex, it includes further improvements on long-horizon work through context compaction, stronger performance on project-scale tasks like refactors and migrations, and improved performance in Windows environments--and significantly stronger cybersecurity capabilities.