Flux Dev
FLUX.1 Dev
Lightning-fast image generation with exceptional quality. Perfect for rapid prototyping and creative exploration.
What Makes FLUX Dev Different
A 12B parameter open-weights model built for developers — combining top-tier image quality with the freedom to build, fine-tune, and integrate.
Open Weights for Developers
Released as source-available open weights, FLUX.1 Dev empowers researchers and developers to build custom workflows, fine-tune for specific use cases, and integrate into any pipeline.
Guidance Distillation Efficiency
Trained with guidance distillation, FLUX.1 Dev achieves competitive prompt following and output quality at significantly lower computational cost — more results per dollar.
FLUX.1 Tools Ecosystem
Access the full FLUX.1 Tools suite: Fill (inpainting/outpainting), Depth (depth-based control), Canny (edge-based control), and Redux (image mixing) — all as open-access models.
NVIDIA & ComfyUI Integration
Optimized for NVIDIA Blackwell architecture and natively supported in ComfyUI for local node-based workflows — giving developers full hardware flexibility.
Competitive Prompt Following
Matches the prompt adherence performance of closed-source alternatives at a fraction of the cost — top-tier output quality second only to FLUX.1 Pro.
Fine-Tuning Ready
The Flux Pro Finetuning API and open architecture make FLUX Dev the go-to foundation for building specialized, brand-specific, or domain-tuned image generation models.
Frequently Asked Questions
Flux Dev is a developer-first rendering engine optimized for speed and API integration. Built by developers, for developers who ship fast. Each generation costs only 2 credits.
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