Flux 1
10 modes on this page
FLUX.1 [schnell] is the fastest model in the FLUX family, producing an image in one to four inference steps. Write your prompt here and it carries over to the Knowlify studio, where schnell is cheap enough to run on the free plan.
Input
FormMode
Prompt*
Image Size
Num Images
Result
Preview
Generated with Flux 1
Credits·~10s
What Flux 1 is for
Flux 1 from Black Forest Labs is a text-to-image model. You describe the frame and it returns a still image in about 10 seconds, billed at Credits. This page groups 10 modes (Text to Image [schnell], Text to Image [dev], Image to Image [dev], Text to Image [schnell], Image to Image [dev], Image to Image [dev] Redux, Image to Image [schnell] Redux, Image to Image [dev] Redux, Image to Image [schnell] Redux, and Text to Image [dev]) so you are not hunting separate URLs for the same family.
Flux 1 is cheap enough that a generation usually fits the free Knowlify plan's credits. A typical run is about 10 seconds.
Pick Flux 1 for text to image at Credits and ~10s. Compare it with Flex, Flux, Flux 2 Klein on the related cards below if you need a different look, speed, or input type.
How to use Flux 1
- 1. Upload the still Flux 1 should start from, then write the change or motion in Input.
- 2. Run it. The prompt and file hand off to the Knowlify studio, where Flux 1 generates.
- 3. Stay in the studio if you want that frame or clip inside a longer narrated video.
What you need
- A prompt that names the subject, style, and framing.
- A source still (PNG or JPG) for the model to start from.
- Image Size (square_hd, square, portrait_4_3, portrait_16_9, and more).
Example prompt
a black horse running through shallow surf at dawn, long lens, fashion film still, anamorphic, teal and gold, no text, no watermark
Frequently asked questions
How do I run Flux 1?
Run Flux 1 on Knowlify at /generate/flux-1. This page has 10 modes in one dropdown. Write the prompt on this page and it opens in the studio, where Flux 1 generates a still image. The same studio also turns documents into full narrated videos.
Where can I use Flux 1 online?
On Knowlify (Black Forest Labs's model, knowlify.com/generate/flux-1). You do not need a separate playground. Flux 1 runs in the studio next to document-to-video.
Can I make a longer video with Flux 1?
Flux 1 itself produces a still image. On Knowlify you can take that output, or skip it and upload a document, and generate a full narrated video with a script you can edit.
What do I need to run Flux 1?
A prompt and a source still. Flux 1 will not invent the starting frame for you on this mode.
How long does Flux 1 take?
Plan on about 10 seconds for a typical run, then whatever queue time the studio has. Video models sit at the high end of that range.
Does Flux 1 have more than one mode?
Yes. This page has 10 modes: Text to Image [schnell], Text to Image [dev], Image to Image [dev], Text to Image [schnell], Image to Image [dev], Image to Image [dev] Redux, Image to Image [schnell] Redux, Image to Image [dev] Redux, Image to Image [schnell] Redux, and Text to Image [dev]. Switch them in the Mode dropdown instead of opening a new URL.
Is FLUX.1 [schnell] free to use?
FLUX.1 [schnell] is the fastest and cheapest model in the FLUX family, so a generation fits comfortably inside the credits on Knowlify's free plan. You will need a free Knowlify account to run it.
How is FLUX.1 [schnell] different from FLUX.1 [dev]?
Schnell runs in one to four inference steps and is optimized for speed, while dev uses more steps and generally produces higher fidelity at greater cost. For quick drafts and iteration, schnell is usually the right pick.
Can I use FLUX.1 [schnell] images commercially?
FLUX.1 [schnell] is released under an Apache 2.0 license, which permits commercial use. Confirm the current license terms with Black Forest Labs before relying on this for a commercial project.