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by Black Forest LabsImage

FLUX.2 Klein 9B

Fast FLUX edits that keep faces and poses intact

  • Up to 2K
  • Up to 3 reference images
  • 9 aspect ratios
Try FLUX.2 Klein 9B

From 2 credits per image≈ $0.02· Create Image

What it's like to use

FLUX.2 Klein 9B is Black Forest Labs' small, fast image model, released in January 2026. One model both creates and edits, with up to three reference photos, 1K or 2K output and nine aspect ratios, and most images return in 15 to 35 seconds.

Good for

  • Look sheets: a grid of outfits or poses for one character
  • Quick outfit, room and time-of-day swaps
  • Drafts before a final render on a larger FLUX.2 model

What FLUX.2 Klein 9B can do

Each mode opens in the studio with FLUX.2 Klein 9B already picked. The price shows before you generate.

Create ImageTurn a written prompt into a finished image.From 2 creditsper image1K 2 · 2K 2Edit ImageChange, restyle or combine photos with a plain instruction.From 3 creditsper image

How to prompt FLUX.2 Klein 9B

  1. Try several seeds; small models vary more between runs than large ones.
  2. Short quoted text usually renders. If a word comes out wrong, change the seed rather than the prompt.
  3. Describe the outfit you want, including its cut, and in edits say what must stay the same.

Settings worth knowing

Everything else has a sensible default, so you can type a prompt and go.

resolution1K · 2K
Output size. Bigger sizes look sharper and cost more.
aspect_ratio1:1 · 16:9 · 9:16 · 4:3 +5
The shape of the frame: wide, square or tall.
image_urls≤ 3
Photos to edit or combine. Say in the prompt what each one adds.
seed0–2147483647
Reuse the same number to get a repeatable result.

How it compares

Same kind of job, different strengths and prices.

FLUX.2 Pro and Max render text and fine detail more reliably; Klein 9B is much faster and cheaper per image.

FLUX.2 Klein 9BThis modelFrom 2 credits
FLUX.2 MaxTop-tier FLUX: photoreal light and exact brand colorsFrom 11 creditsper imageNano Banana 2.1Google's newest Nano Banana, sharp text and 4K outputFrom 8 creditsper imageFLUX.2 Klein 4BThe smallest, quickest FLUX for rapid draftsFrom 2 creditsper imageNano Banana ProPlans the layout first: dense text, diagrams and 4K editsFrom 17 creditsper imageGPT Image 2.5 SunburstOpenAI's quality-first model, up to 4K with clean textFrom 1 creditper imageSeedream 5.0 ProHigh-detail images and edits from up to ten referencesFrom 6 creditsper image

Questions about FLUX.2 Klein 9B

How much does FLUX.2 Klein 9B cost?

On PopNow, the cheapest run of FLUX.2 Klein 9B costs 2 credits ($0.02) per image. Larger sizes cost more: 1K 2 · 2K 2. You pay with credits (1 credit = $0.01), the exact cost shows on the Generate button before you start, and failed generations are refunded automatically.

What can FLUX.2 Klein 9B do?

On PopNow, FLUX.2 Klein 9B works in these modes: Create Image and Edit Image. Pick one in the studio and add a prompt or an upload.

What sizes can FLUX.2 Klein 9B make?

FLUX.2 Klein 9B renders up to 2K in 9 aspect ratios, and edits with up to 3 reference images.

How should I write prompts for FLUX.2 Klein 9B?

Try several seeds; small models vary more between runs than large ones. Short quoted text usually renders. If a word comes out wrong, change the seed rather than the prompt. Describe the outfit you want, including its cut, and in edits say what must stay the same.

FLUX.2 Klein 9B or FLUX.2 Pro?

FLUX.2 Pro and Max render text and fine detail more reliably; Klein 9B is much faster and cheaper per image.

Do I need to install anything to use FLUX.2 Klein 9B?

No. FLUX.2 Klein 9B runs in your browser on PopNow: write a prompt or add a file, choose the settings and download the result. Sign up and you can generate straight away.

Building an app? See the FLUX.2 Klein 9B API →

Make something with FLUX.2 Klein 9B

Type an idea, pick your settings and see the price before you hit Generate.

Try FLUX.2 Klein 9B All models