GPT-5.4, Explained Simply

GPT-5.4 is OpenAI's newest, smartest AI model, built specifically for complex, professional tasks. It’s designed for developers and professionals who need an AI to handle massive documents, write code, or even navigate computer interfaces to get tough jobs done.

What it does well

This model shines at handling long, complicated tasks without getting confused. It has a feature called "Computer use," which means it can actually look at a computer screen, take screenshots, and interact with user interfaces (like clicking buttons or filling out forms on a website) to help complete tasks. It also uses "Compaction," a clever way to summarize and compress older parts of a conversation so it can keep working on long, ongoing projects without forgetting what it was told to do.

What it costs and what it can handle

While exact prices aren't listed here, the model is available in two versions: standard GPT-5.4 for everyday professional tasks, and GPT-5.4 Pro for really tough problems that need extra computing power. It can handle a 1 million token context window. A "token" is just a piece of a word, so 1 million tokens equals roughly 750,000 words—meaning you could feed it several thick textbooks or massive codebases all at once.

Worth knowing

Right now, GPT-5.4 is only available through OpenAI's developer APIs (the behind-the-scenes code pathways developers use to build apps), not as a standalone consumer app. Also, the "Computer use" feature relies on taking and reading screenshots, which might mean it works a bit slower than standard text chat since it has to process images of your screen.