Flux Kontext
FLUX.1 Kontext edits an existing image from a written instruction, preserving the parts you did not ask it to change. Upload an image, describe the edit, and generate.
Input
FormPrompt*
Image URL*
Num Images
Result
Preview![a jazz trio on a tiny stage, smoke, warm spotlights, photoreal photograph, 85mm, natural light, no text, no watermark, no logo, no UI, illustrative preview for the FLUX.1 Kontext [pro] generator on Knowlify](/_next/image?url=%2Fgenerators%2Fflux-kontext.webp&w=3840&q=75)
Illustrative preview, not Flux Kontext output
Credits·~10s
What Flux Kontext is for
Flux Kontext 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 Kontext is cheap enough that a generation usually fits the free Knowlify plan's credits. A typical run is about 10 seconds.
Pick Flux Kontext 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 Kontext
- 1. Upload the still Flux Kontext 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 Kontext 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.
Example prompt
a jazz trio on a tiny stage, smoke, warm spotlights, photoreal photograph, 85mm, natural light, no text, no watermark, no logo, no UI
Frequently asked questions
How do I run Flux Kontext?
Run Flux Kontext on Knowlify at /generate/flux-kontext. Write the prompt on this page and it opens in the studio, where Flux Kontext generates a still image. The same studio also turns documents into full narrated videos.
Where can I use Flux Kontext online?
On Knowlify (Black Forest Labs's model, knowlify.com/generate/flux-kontext). You do not need a separate playground. Flux Kontext runs in the studio next to document-to-video.
Can I make a longer video with Flux Kontext?
Flux Kontext 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 Kontext?
A prompt and a source still. Flux Kontext will not invent the starting frame for you on this mode.
How long does Flux Kontext 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 can FLUX Kontext edit?
Backgrounds, lighting, style, clothing, object removal, and text replacement, driven by a written instruction rather than a mask. Its main advantage over regular image-to-image is that untouched regions stay genuinely unchanged.
Do I need to mask the area I want changed?
No. Kontext works from the instruction alone, so you describe the change in words rather than painting a selection.