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Flux

Free

High-res, prompt-editable images.

FreeFree tier
Inputs: text, image, video, audioOutputs: image, video, audio
Type
Open Source
Company
Black Forest Labs
Visit Website GitHub (40 stars)

About Flux

Black Forest Labs is a frontier AI research lab building the FLUX family of multi-modal models for visual intelligence. Founded by pioneers of Latent Diffusion, Stable Diffusion, and FLUX.1, the lab offers state-of-the-art models for image, video, audio, and action-prediction generation. FLUX models are available via a simple-to-integrate API (pay-as-you-go), open weights for self-hosting and fine-tuning, and an interactive playground. The models support high-resolution, prompt-editable outputs and include specialized capabilities like virtual try-on (FLUX VTO), outpainting, and an eraser tool. Backed by a $300M Series B, the lab serves individual artists, enterprise applications, and synthetic data for AI training, with deployments on premises or through the cloud.

Key Features

Multi-modal generation (image, video, audio, action-prediction)
High-resolution, prompt-editable images
Simple-to-integrate API with pay-as-you-go pricing
Open weights for self-hosting, fine-tuning, and customization
FLUX VTO (Virtual Try-On) for e-commerce
Outpainting and Eraser tools
Interactive playground for no-code experimentation
Enterprise support with volume discounts, SLA, and dedicated support
LoRA fine-tuning support
Built by pioneers of Latent Diffusion, Stable Diffusion, and FLUX.1

Pros & Cons

Pros
  • State-of-the-art visual AI from the creators of Stable Diffusion
  • Multi-modal support (image, video, audio, action-prediction) in one model family
  • Flexible deployment: API, open weights, or on-premises
  • Fine-tunable with LoRA and open weights licensing
  • No subscriptions, only pay-as-you-go for API usage
  • Backed by strong research team and funding ($300M Series B)
Cons
  • Most advanced models (pro, max) are API-only and have per-generation costs
  • Self-hosting open weights may require significant compute resources
  • Still evolving – some features like FLUX.2 are relatively new and may have limited documentation
  • No free tier beyond playground trial (though playground is free to experiment)
  • No explicit details about offline or mobile usage

Best For

Individual artists creating high-quality images and videosEnterprise applications for visual content generation at scaleSynthetic data generation for AI training datasetsVirtual try-on for fashion and e-commerceOutpainting and image editing for creative workflowsRapid prototyping and experimentation via playgroundFine-tuned custom models for specialized domains

FAQ

What is FLUX?
FLUX is a family of multi-modal AI models developed by Black Forest Labs for generating images, videos, audio, and action-prediction. It is built by the pioneers of Stable Diffusion and Latent Diffusion.
How can I access FLUX models?
You can access FLUX models through the cloud API (pay-as-you-go), by downloading open weights for self-hosting, or by using the interactive playground on the Black Forest Labs website.
Is FLUX free?
Black Forest Labs offers a free playground for experimentation. API usage is pay-as-you-go with no subscriptions or seat fees. Open weights licensing has different tiers including a free builder tier for limited commercial use.
Can I fine-tune FLUX models?
Yes, open weights support fine-tuning and LoRA (Low-Rank Adaptation) for customization. Licensing options include fine-tuning rights depending on the plan.
What are the pricing options?
API pricing is pay-as-you-go based on model selection and output dimensions. Open weights licensing offers tiers: Builder (free), Platform, Professional, Enterprise, and Synthetic Data, each with different usage volumes and rights.