Customizing GPT-3 for your application

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.

Fine-tuning now available for GPT-4o

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.

New GPT-3 capabilities: Edit & insert

We’ve released new versions of GPT-3 and Codex which can edit or insert content into existing text, rather than just completing existing text.

Introducing the GPT Store