Fine-tuning now available for GPT-4o

Customizing GPT-3 for your application

Fine-tune with a single command.

Introducing vision to the fine-tuning API

Developers can now fine-tune GPT-4o with images and text to improve vision capabilities

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.

Spring Update

Introducing GPT-4o and making more capabilities available for free in ChatGPT.

GPT-4o System Card

Fine-tuning GPT-3 to scale video creation

Fine-tuning GPT-3 to power and scale done-for-you video creation.