Tools
Stable Diffusion vs Stable Diffusion 3.5
Stable Diffusion or Stable Diffusion 3.5? Their plans monthly and yearly, the capabilities their makers state, security and latest updates, side by side — read from the makers' own pages.
In short
- Both: Text to image, Commercial use, API
- Only Stable Diffusion 3.5 states: Edits images, Upscales
Stable Diffusion
Open text-to-image models from Stability AI for generating and editing images from prompts.
Plans
Community
Free
- Stable Diffusion 3.5 Suite
- Stable Audio 3.0
- SDXL Turbo
- Stable Fast 3D
- Research, non-commercial, and commercial use (under $1M annual revenue)
Enterprise
Price on request
- Commercial Use
- Implementation Support
- Custom Model Training (upgrade)
- Consulting Services (upgrade)
- Custom Pricing
Prices checked 2026-09-25 by web search.
Capabilities
- Text to image — “Stable Diffusion 3.5 Large Turbo : A distilled version of Stable Diffusion 3.5 Large generates high-quality images with exceptional prompt adherence in just 4 steps, making it considerably faster than Stable Diffusion 3.5 Large.” source
- Commercial use — “Free for commercial use (up to $1M in annual revenue)” source
- API — “Stability AI API” source
Security
- SOC 2 Type II — “Stability AI Inc. SOC 2 Type 2 Report” source
- SOC 2 — “Stability AI Inc. SOC 2 Type 2 Report” source
Latest updates
- Stable Audio 3.0
Releasing an API for Stable Audio 3.0; users can upload and transform audio samples using natural language prompts.
- API Pricing Notice
Increasing the pricing for select API services.
- API Deprecation and Pricing Notice
We will no longer support Stable Video Diffusion API and Stable Diffusion 1.6 API; pricing for select API services increased.
Stable Diffusion 3.5
Stable Diffusion 3.5 generates customizable images from text and supports self-hosting, API integration, and web-based creative tools.
Plans
Stable Diffusion 3.5 Large
6.5
- 6.5 credits per successful generation
Stable Diffusion 3.5 Large Turbo
4
- 4 credits per successful generation
Stable Diffusion 3.5 Medium
3.5
- 3.5 credits per successful generation
Stable Diffusion 3.5 Flash
2.5
- 2.5 credits per successful generation
Prices checked 2026-09-25 on the maker’s page.
Capabilities
- Text to image — “Take advantage of market-leading prompt adherence, rivaling much larger models.” source
- Edits images — “Tools for editing images you upload or generate.” source
- Upscales — “Tools for increasing the size and resolution of your images.” source
- Commercial use — “The models are available for commercial and non-commercial use under our permissive Stability AI Community License .” source
- API — “Deploy Stable Diffusion 3.5 on your own infrastructure, integrate it via our API, or start creating now with our web-based applications.” source
Security
- SOC 2 Type II — “Stability AI Inc. SOC 2 Type 2 Report” source
- SOC 2 — “Stability AI Inc. SOC 2 Type 2 Report” source
Latest updates
- API Deprecation Notice
Deprecating the Stable Diffusion 3.0 APIs and automatically upgrading to Stable Diffusion 3.5 APIs at no extra cost.
- Replace Background & Relight
The SD3 and SD3.5 models now support the cfg_scale parameter.
- Stable Diffusion 3.5 Medium & Stable Image Ultra
The endpoint supports sd3.5-medium; Stable Image Ultra is now powered by Stable Diffusion 3.5 Large.