Stable Diffusion and FLUX: Open Source AI Image Generation

Stable Diffusion (Stability AI) and FLUX (Black Forest Labs) represent the open source alternative to cloud services like [Midjourney](/en/blog/midjourney-creer-images-ia) and [DALL-E 3](/en/blog/dalle-3-generation-images-openai). Their fundamental difference: you run them on your own hardware, your data stays local, and you have full control over the model.

## Stable Diffusion vs FLUX

**Stable Diffusion (SDXL, SD3)**:
- Largest history and community
- Massive fine-tuned model ecosystem (Civitai)
- Mature LoRA, ControlNet, inpainting
- Requires GPU with 6-8 GB VRAM minimum

**FLUX (Black Forest Labs)**:
- Released 2024, superior image quality to SDXL
- Better prompt understanding
- Growing community ecosystem
- FLUX.1 Schnell (fast), Dev (balanced), Pro (cloud) versions

## Available Interfaces

- **ComfyUI**: most powerful, node-based workflow
- **Automatic1111 (A1111)**: the historical choice, simpler
- **Forge**: A1111 fork optimized for performance
- **InvokeAI**: clean interface, good UX

## When Open Source Makes Sense

Choose Stable Diffusion or FLUX if:
- **Absolute privacy**: sensitive product images, internal visuals
- **Massive volume**: amortizable local GPU cost vs cloud subscriptions
- **Customization**: fine-tune a model on your own visuals (brand identity)
- **Pipeline integration**: local API in your own applications

For common use cases without privacy constraints, [DALL-E 3](/en/blog/dalle-3-generation-images-openai) or [Adobe Firefly](/en/blog/adobe-firefly-creation-visuelle) are simpler.

The open source nature means Trust Score applies differently: there's no responsible publisher in the traditional sense — your organization manages compliance. See our [Image Generation category](/en/categories/image-generation).