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 ...

The new coding model released Thursday afternoon, entitled GPT-5.3-Codex, builds on OpenAI’s GPT-5.2-Codex model and combines insights from the AI company’s GPT-5.2 model, which excels on non-coding ...

The new model is built to accelerate the capabilities of Codex, the agentic coding tool OpenAI launched earlier this week.

OpenAI has released a new macOS app for Codex, integrating many of the agentic coding practices that have become popular since Codex launched last year.