Introducing Würstchen: Fast Diffusion for Image Generation

Practical AI: Tools, Models & Frameworks

What changed

Würstchen is a diffusion model, whose text-conditional component works in a highly compressed latent space of images. Compressing data can reduce computational costs for both training and inference by orders of magnitude. We also observed that the Prior (Stage C) adapts extremely fast to new resolutions.

Why it matters

A concrete addition to Practical AI: Tools, Models & Frameworks: it changes what's available to builders today rather than being general commentary.

How it compares

Related prior coverage to compare against:

  • Introducing 4o Image Generation
  • Introducing our latest image generation model in the API
  • The new ChatGPT Images is here

Sources