Flux Lora Fill
Flux Lora Fill edits an image you upload. Pick a mode, write the prompt, run it in the studio.
Input
FormPrompt
Image Url*
Image Size
Num Images
Result
Preview
Illustrative preview, not Flux Lora Fill output
Credits·~10s
What Flux Lora Fill is for
Flux Lora Fill from Black Forest Labs starts from a still you upload, then edits it from your prompt. A typical run takes about 10 seconds at Credits. Use it when you already have a frame and need a new version, not a picture from scratch.
Flux Lora Fill is cheap enough that a generation usually fits the free Knowlify plan's credits. A typical run is about 10 seconds.
Pick Flux Lora Fill for image editing at Credits and ~10s. Compare it with Flex, Flux, Flux 1 on the related cards below if you need a different look, speed, or input type.
How to use Flux Lora Fill
- 1. Upload the still Flux Lora Fill 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 Lora Fill 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).
- Optional toggles on this model, such as audio or quality flags.
Example prompt
a biplane flying through a canyon at sunrise, wingtip close, octane 3D render, subsurface, chrome accents, no text, no watermark
Frequently asked questions
How do I run Flux Lora Fill?
Run Flux Lora Fill on Knowlify at /generate/flux-lora-fill. Write the prompt on this page and it opens in the studio, where Flux Lora Fill generates a still image. The same studio also turns documents into full narrated videos.
Where can I use Flux Lora Fill online?
On Knowlify (Black Forest Labs's model, knowlify.com/generate/flux-lora-fill). You do not need a separate playground. Flux Lora Fill runs in the studio next to document-to-video.
Can I make a longer video with Flux Lora Fill?
Flux Lora Fill 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 Lora Fill?
A prompt and a source still. Flux Lora Fill will not invent the starting frame for you on this mode.
How long does Flux Lora Fill 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.
What does FLUX.1 [dev] Fill with LoRAs cost?
Knowlify charges this as credits, at the compute cost.
What is FLUX.1 [dev] Fill with LoRAs best for?
FLUX.1 [dev] Fill is a high-performance endpoint for the FLUX.1 [pro] model that enables rapid transformation of existing images, delivering high-quality style transfers and image modifications with the core FLUX capabilities. It edits an image you upload.
Do I need an account to use FLUX.1 [dev] Fill with LoRAs?
You need a Knowlify account to run FLUX.1 [dev] Fill with LoRAs, and signing up is free. Your prompt carries across.