Introducing improvements to the fine-tuning API and expanding our custom models program
OpenAI just gave developers more control over fine-tuning. Here's what changes.

Why it matters
OpenAI is expanding its custom models program with improved fine-tuning APIs, lowering the barrier for enterprises to build proprietary AI without building from scratch. This directly competes with open-source alternatives and signals OpenAI's shift toward developer-first monetization.
The key facts
5 to knowFine-tuning API improvements announced
Custom models program expansion
Developer control features added
Published April 4, 2024
OpenAI official announcement
Go to the source
OpenAI Blogopenai.com
Publisher excerpt: We’re adding new features to help developers have more control over fine-tuning and announcing new ways to build custom models with OpenAI.