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Stable Diffusion
FreemiumFree under the Community License (under US$1M annual revenue); Enterprise license custom; API usage priced separatelyText to ImageAPISelf-Hosted
Stable Diffusion is Stability AI's family of text-to-image models, available as downloadable weights, through Stability's API and cloud partners, and in its Stable Assistant web app.
Free under the Community License (under US$1M annual revenue); Enterprise license custom; API usage priced separately · Checked Oct 17, 2026
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Pricing
- Model
- Free community license; custom Enterprise license; separate hosted API charges
- Price
- Free under the Community License (under US$1M annual revenue); Enterprise license custom; API usage priced separately
Summary
The current line is Stable Diffusion 3.5 in Large, Large Turbo and Medium versions, with SDXL and SDXL Turbo still offered. You can download the weights and run them with tools such as ComfyUI or diffusers, or use Stability's hosted API and web app instead. The weights are not unrestricted open source: Stability's Community License is free for research, non-commercial use and commercial use by individuals and organizations under US$1 million in annual revenue, while larger businesses need a paid Enterprise license for commercial use. The license also bars using the models or their outputs to build a new foundational model, although fine-tunes and LoRAs are permitted.
Bottom line: Use it when you want image models you can run and fine-tune yourself; confirm the revenue-based license terms before commercial deployment.
Find your fit
Before you choose Stable Diffusion
More options in Text-to-Image. Compare pricing, platforms, and features side by side.
Image generation API using AI
Freemium
Developers needing simple prompt-to-image integration
Pros
- Weights can be downloaded and run on your own hardware with ComfyUI, diffusers or Stability's reference code.
- Free under the Community License for research, non-commercial use and businesses under US$1M annual revenue.
- Fine-tunes and LoRAs are permitted, and users own their outputs subject to law and Stability's AUP.
Cons
- Commercial use by organizations over US$1M annual revenue requires a paid Enterprise license.
- The license bars using the models or outputs to build new foundational models, and downloads require accepting terms.
- Self-hosting means providing and maintaining your own hardware.
About
- Platforms
- Self-hosted weights, Stability AI API, cloud partners, Stable Assistant (web)
- API Available
- Yes
- Self-Hosted
- Yes
- Last Updated
- October 17, 2026
Best For
Who it's for
- Developers and creators who want to self-host or fine-tune image models
- Small businesses under the license's revenue threshold
What it does well
- Generate images locally from text prompts
- Fine-tune or train LoRAs on a base model
- Add image generation to an app via the Stability AI API
Integrations
Compare Stable Diffusion
Recommended skills for this tool
Auto-curated by the AIDiveForge recommendation matrix. These skills are predicted to enhance this tool based on category, capability, and domain signals.
-
Diffusion Prompt Library enhance 37%
Build a small, reproducible prompt set for a specified image model.
Why: category partial · caps 0/0 · domain design · io-match
-
Product-Shot Background Swap enhance 37%
Plan and verify a product-background replacement against preservation constraints.
Why: category partial · caps 0/0 · domain design · io-match
-
Thumbnail A/B Generator enhance 32%
Specify controlled thumbnail variants for a defined video and test goal.
Why: category partial · caps 0/0 · domain design
-
Landing Page Copy Audit post 30%
Audit landing-page copy against a stated audience and conversion goal.
Why: caps 0/0 · domain design · io-match
Frequently Asked Questions
- Is Stable Diffusion free?
- Stable Diffusion offers a free option alongside paid upgrades. Pricing: Free under the Community License (under US$1M annual revenue); Enterprise license custom; API usage priced separately. Check the current allowances and terms before choosing a plan.
- Does Stable Diffusion have an API?
- Yes. Stable Diffusion exposes a developer API. See the official documentation at https://stability.ai/stable-image for details.
- Can I self-host Stable Diffusion?
- Yes. Stable Diffusion supports self-hosting on your own infrastructure.
- What platforms does Stable Diffusion support?
- Stable Diffusion is available on: Self-hosted weights, Stability AI API, cloud partners, Stable Assistant (web).
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A model family, not a single app
Stable Diffusion is Stability AI’s family of text-to-image models. The current line on Stability’s image models page is Stable Diffusion 3.5, offered as Large, Large Turbo (designed to generate in four steps) and Medium (designed to run on consumer hardware), with Stable Diffusion XL and SDXL Turbo listed as additional models. Stability offers several ways to use them: download the weights and run them yourself, call the Stability AI API, use them through cloud partners, or work in its Stable Assistant web app.
Licensing: downloadable, with conditions
The weights are available to download, but not on unrestricted terms. Stability’s license page says its Community License allows research, non-commercial and commercial use for individuals and organizations with under US$1 million in annual revenue; above that threshold, commercial use needs a paid Enterprise license. The same page says you may not use the Core Models or their outputs to build a new foundational model architecture, while fine-tunes and LoRAs are allowed, and that users own their outputs subject to law and Stability’s acceptable use policy. The SD 3.5 Large model card requires accepting these terms before download. Terms can differ between releases, so check each model’s card.
Running it yourself or hosted
For local use, the model card recommends ComfyUI, the diffusers library, or Stability’s reference repository. Self-hosting means supplying your own hardware. The API and Stable Assistant are Stability’s hosted services and are priced separately from the license.
Who it suits
Stable Diffusion suits developers and creators who want to run, fine-tune or embed image models on their own infrastructure, and teams that want a hosted API from the same model family. Businesses over the revenue threshold should plan for an Enterprise license before commercial use.
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