FLUX.1

Open-weight image model family from Black Forest Labs, hosted or self-run

AI Image GenerationFree planOverseas★★★★☆ 4.0

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What is FLUX.1?

FLUX.1 is a family of text-to-image models from Black Forest Labs, the team behind several earlier diffusion advances. The important distinction is that FLUX.1 is a model rather than a single website: the weights come in open variants such as schnell and dev under different licences, while a commercial licence and a hosted API exist for production use. Quality on hands, text rendering and prompt adherence is a step above most open models of its generation, which is why it also appears inside many third-party generators and local tools. Self-hosting needs a capable GPU and patience with the ecosystem.

Last updated: 2026-09-20. This site only provides an index; for exact features, pricing, and licensing, see the official website.

Key features

Transformer-based text-to-image model released in several variants
Open weights for schnell and dev, with a commercial licence option
Strong prompt adherence and legible text inside generated images
Image-to-image, inpainting and structural guidance modes
Runs locally through ComfyUI and similar community front ends
Hosted API for teams that would rather not run their own GPU

Pros & cons

Strengths

Open weights allow local runs with no per-image fee
Text rendering and prompt following beat most open rivals
Widely supported across third-party tools and interfaces

Watch out for

Local use needs a strong GPU and a technical setup
Licence terms differ per variant and deserve reading first
No official consumer app; you rely on third-party front ends

Best for & use cases

self-hosted image generation, api pipelines, developers and advanced prompt work

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FAQ

Is FLUX.1 free to use?

The weights for some variants are openly downloadable, but each variant carries its own licence. Some restrict commercial use without a separate agreement, so check the licence attached to the exact model you download.

Can I run it without a strong GPU?

Technically yes with quantised versions, but generation becomes slow. Most people use a hosted API or a third-party site unless they have a modern GPU with plenty of video memory.

Why is it used inside other apps?

Because the weights are available and the output quality is high, many image platforms offer FLUX.1 as a selectable model. Using those apps is often the easiest way to try it without any setup.