Guide to Using GPT-5.4: OpenAI's Latest Frontier Model for API and Development
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Summary
The article provides a guide to using GPT-5.4, OpenAI's most capable frontier model, which delivers higher-quality outputs with fewer iterations across ChatGPT, the API, and Codex. It explains that GPT-5.4 is the default model for both general-purpose work and most coding tasks, capable of handling software engineering, reasoning, writing, and tool use within the same workflow. The guide covers key features of the GPT-5 model family and offers practical advice on how to get the most out of GPT-5.4, including migration guidance for users transitioning to the latest models in the OpenAI API.
Key quotes
· 5 pulledGPT-5.4 is our most capable frontier model yet, delivering higher-quality outputs with fewer iterations across ChatGPT, the API, and Codex.
In practice, gpt-5.4 is the default model for both broad general-purpose work and most coding tasks.
Start there when you want one model that can move between software engineering, reasoning, writing, and tool use in the same workflow.
This guide covers key features of the GPT-5 model family and how to get the most out of GPT-5.4.
Learn about how to use and migrate to GPT-5.4 and the GPT-5 model family, the latest models in the OpenAI API.
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