FLUX.1 vs Stable Diffusion 3.5
FLUX.1 produces higher-quality images with better text rendering and prompt adherence. Stable Diffusion 3.5 offers a larger community ecosystem, free self-hosting, and extensive fine-tuning tooling including ControlNet and LoRA.
Specifications
Side-by-Side Specs
Detailed technical comparison of FLUX.1 [pro] and Stable Diffusion 3.5 Large.
FLUX.1 [pro]
Black Forest Labs
Stable Diffusion 3.5 Large
Stability AI
Provider
Black Forest Labs
Stability AI
Parameters
12B
8B
License
Proprietary (schnell: Apache 2.0)
Stability Community License
Price
$0.05 / image
Free (self-hosted)
Release Date
Aug 2024
Oct 2024
Language Support
Prompt in 20+ languages
English prompts primarily
Strengths
Key Strengths
What each model does best.
FLUX.1 [pro]
Black Forest Labs
- Superior prompt adherence and text rendering
- Photorealistic output quality
- Fast inference (schnell variant)
- Open schnell variant available
Stable Diffusion 3.5 Large
Stability AI
- Free and open-source for self-hosting
- Massive community and LoRA ecosystem
- ControlNet and inpainting support
- Runs locally on consumer GPUs
Best Use Cases
When to Choose Which
Practical recommendations based on real-world workloads.
Choose FLUX.1 [pro] for
- → Commercial image generation APIs
- → Photorealistic marketing content
- → Text-in-image generation
- → High-fidelity creative workflows
Choose Stable Diffusion 3.5 Large for
- → Local and on-premise image generation
- → Custom LoRA fine-tuning
- → ControlNet-based workflows
- → Budget-conscious creators
Final Verdict
Our Recommendation
Choose FLUX.1 for the highest output quality and prompt adherence. Choose Stable Diffusion 3.5 for free self-hosting, community tooling, and fine-tuning flexibility.
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