Stable Diffusion

Overview

Stable Diffusion is Stability AI's family of open-weights text-to-image models, whose weights are published on Hugging Face and can be run on your own hardware or through hosted APIs. The current SD 3.5 release is a Multimodal Diffusion Transformer available in several sizes that run on consumer GPUs, with improved image quality, prompt understanding and typography over earlier versions. Because the weights are open, Stable Diffusion has the largest customization ecosystem of any image model, including LoRA fine-tunes and ControlNet, and it can be adapted or embedded without per-image fees. It is released under the Stability AI Community License, which is free for non-commercial use and for commercial use up to one million dollars in annual revenue, with an enterprise license above that.

Best for developers and teams that need customization, fine-tuning or zero-cost high-volume generation on their own hardware.

Stable Diffusion trades the polish of Midjourney or Flux for openness and control: the weights are free to download and run, so there is no per-image cost on your own GPU and no cap on how you customize the model. SD 3.5 improved typography and prompt following, though raw quality now trails the leading closed models. It suits developers and teams that want fine-tuning, ControlNet-style control or high-volume generation on their own hardware, and it is free to use commercially under the Community License up to one million dollars in annual revenue.

Key Facts

Features

Where you use it

Self-hosted or through hosted APIs

Text in images

Improved typography in SD 3.5, though weaker than the leading closed models

Customization and control

Yes, LoRAs, ControlNet and fine-tuning

Open weights

Yes, free to self-host

API

Yes, through hosted APIs

Integrations

Integrations coming soon.

Deployment and Support

Deployment

• Cloud (SaaS)
• Browser-based
• On-premise

Company size

• Freelancers
• Small and mid-sized
• Enterprise

Suitability

The table combines the industries the vendor addresses with the company sizes the tool is aimed at. An empty cell means the combination is not stated, not that it is ruled out.

Pros and Cons

Pricing

• Self-hosted

  Free

  Open weights. Needs your own GPU.

Best For

• Media & Creative

Alternatives and Comparisons

What users say

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