FLUX 3 Image Klein

What it is

Open-weights image model from Black Forest Labs, the company behind FLUX. It makes and edits pictures from a text prompt plus up to 10 reference images. Free to try in the browser on Hugging Face or to run on your own NVIDIA card (8 GB with the INT8 build); BFL's API starts at $0.009 per image.

Some setupFreeWorks on web, Mac/PC

Visit FLUX 3 Image Klein ↗View on Hugging Face Spaces

Our take

Free (open weights); API from $0.009 per image

Use it to retouch photos you already have, not to dream up new ones. For fresh pictures from a short prompt, Ideogram or Midjourney get you there with less fuss, and Krea 2 wins most of the side-by-side threads.

Also look at Ideogram and Midjourney.

The quick breakdown

Good for: Photographers with an NVIDIA card who want free edits of their own pictures that keep the pose, the camera angle and the skin texture.
Not great for: Quick pictures from a one-line prompt. BFL's own model card warns that short prompts come out generic.
Watch out: Its prompt helper is a separate 9B model that adds about 28 GB of GPU memory. On a smaller card, give BFL's system prompt to any chatbot and paste the caption it writes. Commercial use is free only below $5M in yearly revenue.
What people say: Early r/StableDiffusion reviews are split. Testers rate it below FLUX.2 Klein and Krea 2 for new images, while one photographer says it holds pose, camera angle and skin texture on high-resolution edits where FLUX.2 Klein and Qwen 2.1 struggled for them.

Based on BFL launch post (8 GB INT8 build, API price, license), Model card (prompt upsampler warning, memory use), Free demo on Hugging Face, r/StableDiffusion: disappointing for generation, strong for photo edits, r/StableDiffusion: FLUX 3 Klein vs FLUX.2 Klein 9B vs Qwen Image 2.1 vs Krea2. Checked Oct 18, 2026. Prices change, so confirm before you pay.

Good for

Quick facts

Price: Free (Free (open weights); API from $0.009 per image).
You get: images.
Last checked: Oct 18, 2026.
Category: Images & Design.
Where it was found: Hugging Face Spaces, first seen Oct 15, 2026, with 106 Hugging Face likes when last checked.
Tags: Image, Open Source, Free tier.
Traction: 106 Hugging Face likes.
Official link: huggingface.co/spaces/black-forest-labs/flux-3-image-klein

Common questions

What is FLUX 3 Image Klein good for?

Photographers with an NVIDIA card who want free edits of their own pictures that keep the pose, the camera angle and the skin texture.

Is FLUX 3 Image Klein free?

Free (open weights); API from $0.009 per image. Prices change, so check the official site before you pay.

How hard is FLUX 3 Image Klein to use?

ShipRadar rates it Some setup: some setup or learning required.

What should I watch out for with FLUX 3 Image Klein?

Its prompt helper is a separate 9B model that adds about 28 GB of GPU memory. On a smaller card, give BFL's system prompt to any chatbot and paste the caption it writes. Commercial use is free only below $5M in yearly revenue.