Introducing the Gen-4 Image API
May 16, 2025
by Runway
Introducing the Gen-4 Image API

Earlier this month, we released Gen-4 References, our most flexible and general image generation model yet. It became one of our most popular releases ever, with new use cases and workflows being discovered every minute.

Today, we’re making Gen-4 Image, including References, available via the Runway API, allowing anyone to integrate its powerful multimodal generation capabilities directly into their apps, products, platforms and websites.

“Runway’s Gen-4 Image model marks a transformative step for creative teams. Adding this to Runway's API makes it possible to explore product looks and designs with unprecedented flexibility – scaling product visuals across scenes, characters and settings with consistent, repeatable precision. For brands and e-commerce, this unlocks a new level of efficiency in creating library photography and video content that’s both high-quality and endlessly adaptable.”
-- Debora den Iseger, SVP, Head of Content & Innovation at Monks

The Gen-4 Image API costs $0.08 per generated image. To learn more and get started, visit runwayml.com/API.

Example Use Cases

Virtual Try-on

Allow your customers to virtually try on clothing and accessories from your website by simply uploading a photo of themselves.

Gaming

Generate new assets for your video game, on the fly, only with a few visual references from your world.

Interior design

Start from an empty room, visualize any kind of furniture and layout with image references.

Custom creative tools

Build new kinds of creative tools using bounding boxes to precisely define the composition of your scene.

The flexibility of the model, and possibilities for what you can create, are endless. We’ve included an example project to give you a sense of what’s possible. Clone the repo and try it out here.

Get Started