FLUX 3 Klein Image Editor
A small change can tell a whole new story.
Give your image
a second story.
Replace a background, explore a color, or change the mood. Be specific about what you want to preserve and what you want to change.
Start with a clear reference. Review the result at full size before using it in a finished project.
Read the prompting guide →Drag the handle to compare.
Curious? Good.
A little clarity before
your next creation.
FLUX 3 Image Klein is Black Forest Labs’ compact, 5.6-billion-parameter image model, released on October 15, 2026. It supports text-to-image generation, image editing, multiple reference images, and layout control. Flux3Klein.dev is an independent workspace built around this model.
Explore illustrations, portraits, product concepts, posters, and more. Start from a text description or upload a photo and describe a change. Results depend on the prompt and references; review details and text before using an image in a finished project.
A 1K image uses 1 credit, a 2K image uses 3 credits, and a 4K image uses 5 credits. The same rates apply to editing. Buy any credit pack to unlock 2K, 4K and region editing with up to 6 regions per image. Each image uses credits at the selected resolution. Your total is shown before submission. Credit packs are one-time purchases, with no recurring subscription.
Your workspace and generated images are private by default. The gallery is curated separately. Your uploads are not automatically published.
No. Flux3Klein.dev is independently operated and is not affiliated with or endorsed by Black Forest Labs. FLUX models are developed by Black Forest Labs. Official documentation and licensing are linked in our blog.
Credits are reserved when a task is submitted and settled after a result is saved. A confirmed failed task releases the reserved credits. A task still being checked stays pending to prevent duplicate submission.