Stable Diffusion 3.5 Released: A Comprehensive Guide

Last updated on: Oct 23, 2024

Stability AI has just released its most powerful model yet, Stable Diffusion 3.5, which comes as a complete package with three distinct versions.

In this update, you will learn about:

  1. The 8 Billion Parameter Model and Key Features of Stable Diffusion 3.5 Large
  2. Speed and Optimization in Stable Diffusion 3.5 Large Turbo
  3. User-Friendly Capabilities of Stable Diffusion 3.5 Medium

Stable Diffusion 3.5 is designed to meet the diverse needs of researchers, business enthusiasts, startups, and enterprises. It includes:

Stable Diffusion 3.5 Large

This foundational model boasts 8 billion parameters, outperforming competitor models with its swift response time. It stands as the most powerful model in the Stable Diffusion series, making it perfect for professional use cases at resolutions of 1 million pixels.

Stable Diffusion 3.5 Large Turbo

This model is a distilled version of Stable Diffusion 3.5 Large, generating high-quality images in just four steps, significantly faster than the original.

Stable Diffusion 3.5 Medium

With 2.5 billion parameters, this model utilizes an improved MMDiT-X architecture and training methods, offering an out-of-the-box experience on consumer-grade hardware. It achieves a balance between quality and ease of customization, capable of generating images with resolutions ranging from 0.25 to 2 million pixels.

These models represent significant upgrades. Stability AI noted that after the release of Stable Diffusion 3 Medium in June, the model did not meet community expectations. Rather than making quick fixes, they took the time to develop a new version to further their mission of transforming visual media.

Model Development Insights

In developing these models, Stability AI prioritized customizability to provide a flexible foundation. They integrated Query-Key Normalization into the transformer blocks, stabilizing the training process and simplifying future fine-tuning and development.

To support downstream flexibility, some trade-offs were made. Using different seeds with the same prompt can yield significant output variations, intentionally designed to help maintain a broader knowledge base and diverse styles within the foundational model. However, less specific prompts may lead to increased output uncertainty and varying aesthetic levels.

For the Medium version specifically, Stability AI made adjustments to architecture and training protocols to enhance quality, coherence, and multi-resolution generation capabilities.

Advantages of the Models

According to reports, all versions of Stable Diffusion 3.5 excel in several areas:

Customizability

Easily fine-tune the model to meet specific creative needs or build applications around customized workflows.

Efficient Performance

Optimized to run on standard consumer-grade hardware, particularly for Stable Diffusion 3.5 Medium and Stable Diffusion 3.5 Large Turbo models.

Diverse Output

Create images that represent a wide array of backgrounds with minimal prompts, showcasing more than just a single skin tone or feature.

Stable Diffusion 3.5

Stylistic Variety

Capable of generating images in various styles and aesthetics, including 3D, photography, painting, line art, and nearly any visual style imaginable.

Stable Diffusion 3.5 - Stylistic Variety of Images

Stability AI has also ensured that this generation of models considers mobile device compatibility.

Moreover, Stability AI claims that Stable Diffusion 3.5 Large leads in prompt adherence while matching the image quality of larger models.

Stable Diffusion 3.5 Large Turbo offers the fastest inference speed among comparable models, maintaining a high level of image quality and responsiveness, even compared to similarly sized non-distilled models.

Stable Diffusion 3.5 Medium performs better than other medium models, achieving a balance between prompt adherence and image quality, making it an efficient choice for high-quality performance.

Stable Diffusion 3.5 - Performance ComparisonStable Diffusion 3.5 - Model Performance

Some have already compared the raw output of Stable Diffusion 3.5 Large with FLUX 1.1 Pro.

Stable Diffusion 3.5 - Comparison with FLUX 1.1 Pro

Explore the latest models, including the powerful Stable Diffusion 3.5 Large, by visiting our website. Click here to experience cutting-edge image generation capabilities today!

Additionally, Stability AI has integrated safety and responsible AI practices from the early stages of development for this new version of the model.

Finally, Stability AI announced that Stable Diffusion 3.5 Medium will be publicly released on October 29. Shortly thereafter, ControlNets will also be launched to provide advanced control features for various professional use cases.