GPT-5.3 Codex merges the advanced coding capabilities of GPT-5.2 Codex with the reasoning and professional knowledge of GPT-5 ...

The company says its latest model’s agentic skills also apply to a broader set of knowledge work such as presentations and ...

GPT-5.3-Codex is about more than just writing code ...

OpenAI’s GPT-5.3-Codex expands Codex into a full agentic system, delivering faster performance, top benchmarks, and advanced cybersecurity capabilities.

When OpenAI unveiled GPT-5.3-Codex, this was no longer being positioned as a developer tool but as a general-purpose work agent capable of operating across software engineering, knowledge work, and ...