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FLUX Pro gets a fine-tuning API

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x.com
Date
Thread · 3 parts

We are excited to announce the launch of the FLUX Pro Finetuning API, bringing unprecedented customization capabilities to our flagship FLUX Pro model line.

Learn more in our blogpost: https://t.co/7h6p4j6bFT

and go try it out in the BFL API: https://t.co/0Q4Fz5WTrS

Context

The FLUX Pro API lets creators teach an image model a particular subject or visual style using their own example images. Black Forest Labs' January 2025 release article describes training a customized version of FLUX Pro, then using text prompts to place the learned content into new images.

This addresses a specific limitation of prompting: a model may have little knowledge of a particular product, person or brand appearance. The examples provide that visual reference during training, so later prompts can work with the customized model when generating new compositions.

Terms in this piece · Glossary
  • fine-tuning — Taking a trained model and training it a bit more on your own examples so it gets better at one specific job.
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