Introducing the GPT Store

First look at GPT-5

See how a group of leading developers use GPT-5 for the first time.

Introducing GPT-5.1 for developers

GPT-5. 1 is now available in the API, bringing faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools.

Using GPT-4 to deliver a new customer service standard

Ada uses GPT-4 to deliver a new customer service standard

Introducing GPT-4o and more tools to ChatGPT free users

Introducing GPT-4o and more tools to ChatGPT free users We are launching our newest flagship model and making more capabilities available for free in ChatGPT.

Welcome GPT OSS, the new open-source model family from OpenAI!

Fine-tuning now available for GPT-4o

Introducing GPT-4.1 in the API

Introducing GPT-4. 1 in the API—a new family of models with across-the-board improvements, including major gains in coding, instruction following, and long-context understanding.

GPT-3.5 Turbo fine-tuning and API updates

Developers can now bring their own data to customize GPT-3. 5 Turbo for their use cases.

Customizing GPT-3 for your application

Fine-tune with a single command.

Delivering nuanced insights from customer feedback

Using GPT-3 to deliver fast, nuanced insights from customer feedback.

GPT-4

It can generate, edit, and iterate with users on creative and technical writing tasks, such as composing songs, writing screenplays, or learning a user’s writing style.

Introducing GPT-5.2

GPT-5. 2 is our most advanced frontier model for everyday professional work, with state-of-the-art reasoning, long-context understanding, coding, and vision.