Image generation
FLUX.1-Kontext-Dev
Edit a photo by describing the change in words — non-commercial only
★ 1.6k
May 2026
MIT
Image generation
What we checked ourselves
Not copied from the project's own blurb. These are things we opened and verified, with the date.
- 5 Sept 2026We opened the hosted demo and confirmed it was running.
Where this sits among the 210 tools we list in Image generation
- Works without using a terminal180 of 210
- No API key required195 of 210
- Sends your input to the provider33 that do not →
Only 174 of the 210 meet all of the conditions above.
Counted from our own checks: every tool we list is examined against the same criteria.
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 Never retouch journalistic or evidentiary images, and do not publish altered photographs of people without consent.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?
- Only under conditions. The page shows MIT, but the actual terms — the AI model this page runs, or the provider's own terms — attach restrictions. Check the provider's terms before using it at work.
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.