Introduction

GPT-5.4 was released as a frontier model for professional work across the API and Codex. It helps developers analyze complex information, build production software, and automate multi-step workflows.

Within the GPT-5.4 generation, gpt-5.4 is the general-purpose model for workflows that move between software engineering, reasoning, writing, and tool use.

This guide covers key features of the GPT-5 model family and how to get the most out of GPT-5.4.