Image generation

FLUX.1-Kontext-Dev

Edit a photo by describing the change in words — non-commercial only

Visit official page 日本語で詳しく見る

Popularity

★ 1.6k

Last update

May 2026

License / pricing

MIT

What it does

Upload a picture and describe what to change ("make the background night", "turn this shirt blue") and it applies the edit without you selecting any region, preserving the rest of the image. Prompts work better in English. The FLUX.1 Kontext model is released under a non-commercial licence, so results cannot be used for paid work. Never retouch journalistic or evidentiary images, and do not publish altered photographs of people without consent.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

Setup difficultySome setup needed
Command lineNot required
API keyNot required
Sends data onlineYes

Judged automatically from the project's own metadata. Always confirm on the official page.

FLUX.1-Kontext-Dev FAQ

Do I need to install anything or write code to use FLUX.1-Kontext-Dev?: No install needed — it runs in the browser.
Does FLUX.1-Kontext-Dev work on a phone?: No. It needs a computer.
Can I use FLUX.1-Kontext-Dev commercially?: The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

Tool	Command line	API key	Sends data out	Phone	Commercial use
FLUX.1-Kontext-Dev (this page)	Not needed	Not needed	Yes	No	With conditions
ImageToolbox	Not needed	Not needed	No	Yes	Yes
diffusers-image-outpaint	Not needed	Not needed	Yes	No	With conditions
Omni-Image-Editor	Not needed	Not needed	Yes	No	Yes

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

Other image generation tools

ImageToolbox

A full photo-editing toolkit that runs on an Android phone alone

diffusers-image-outpaint

Extend a photo beyond its edges to change the aspect ratio

Omni-Image-Editor

One page for background removal, upscaling and image generation

instruct-pix2pix

Edit a photo by typing what you want changed — commercial use allowed

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What it does

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

FLUX.1-Kontext-Dev FAQ

Do I need to install anything or write code to use FLUX.1-Kontext-Dev?

No install needed — it runs in the browser.

Does FLUX.1-Kontext-Dev work on a phone?

No. It needs a computer.

Can I use FLUX.1-Kontext-Dev commercially?

The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

Tool	Command line	API key	Sends data out	Phone	Commercial use
FLUX.1-Kontext-Dev (this page)	Not needed	Not needed	Yes	No	With conditions
ImageToolbox	Not needed	Not needed	No	Yes	Yes
diffusers-image-outpaint	Not needed	Not needed	Yes	No	With conditions
Omni-Image-Editor	Not needed	Not needed	Yes	No	Yes

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.