Concept
OpenAI AI Coding Filter
GPT‑5.3-Codex is the most capable agentic coding model to date, combining the frontier coding performance of GPT‑5.2-Codex with the reasoning and professional knowledge capabilities of GPT‑5.2.
OpenAI AI Coding Filter
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...
OpenAI AI Coding Filter
Introducing GPT-5.1-Codex-Max, a faster, more intelligent agentic coding model for Codex. The model is designed for long-running, project-scale work with enhanced reasoning and token efficiency.
OpenAI AI Coding Filter
This addendum to the GPT-5 system card shares a new model: GPT-5-Codex, a version of GPT-5 further optimized for agentic coding in Codex. GPT-5-Codex adjusts its thinking effort more dynamically based on task complexity, responding quickly to simple...
OpenAI AI Coding Filter
Codex is a cloud-based coding agent. Codex is powered by codex-1, a version of OpenAI o3 optimized for software engineering. codex-1 was trained using reinforcement learning on real-world coding tasks in a variety of environments to generate code that...