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Stable Diffusion 3.5 Review 2026 — Is It Worth Using Over Flux.1?

Stable Diffusion 3.5 brings MMDiT-X architecture, improved text rendering, and 3 model variants. Free community license. Is it better than Flux.1? Full comparison.

In inglese

Stable Diffusion 3.5 is a family of image-generation models with Large, Large Turbo, and Medium variants. It supports styles including photography, painting, 3D, and line art, with text prompt adherence and diverse outputs.

Creators, developers, researchers, and enterprises can self-host the models, use Stability AI's API, or access them through cloud partners and web applications. Community licensing is free for eligible users; API generation uses credits, while enterprise licensing and support are custom-priced.

Features

Generates images from text prompts
Supports photography, painting, 3D, and line-art styles
Includes Large, Large Turbo, and Medium variants
Large targets professional 1-megapixel image generation
Large Turbo generates images in four steps
Medium is designed to run on consumer hardware
Supports self-hosting and API integration
Available under the Stability AI Community License

Use cases

Create concept art and visual development assets
Generate marketing and editorial images
Fine-tune models for specialized creative workflows
Build image-generation applications with the API
Run image generation on consumer hardware
Deploy image workflows for enterprise creative teams

Pros

Cons

Latest updates

2025-04-17 API Deprecation Notice
Deprecating the Stable Diffusion 3.0 APIs and automatically upgrading to Stable Diffusion 3.5 APIs at no extra cost.
2024-11-07 Replace Background & Relight
The SD3 and SD3.5 models now support the cfg_scale parameter.
2024-10-29 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.
2024-10-22 Stable Diffusion 3.5 Large & Large Turbo
The endpoint supports sd3.5-large and sd3.5-large-turbo in the model parameter.

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

Pricing

Starting price: 2.5 credits
Prices checked: 2026-09-25

Stable Diffusion 3.5 Large

6.5

6.5 credits per successful generation

Stable Diffusion 3.5 Large Turbo

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

Official website