AI image model by Black Forest Labs
FLUX.2 Klein for low-cost image drafts and simple edits
FLUX.2 Klein is the compact branch of Black Forest Labs' FLUX.2 family. Banana Studio runs the 9-billion-parameter version, which suits trying many ideas cheaply before you spend more on a final image.
- From 11 credits
- 3 aspect ratios
- Edit with up to 4 photos
What FLUX.2 Klein is good at
Many drafts for little
Its price makes it the place to explore a prompt: try ten versions, keep the best direction, then finish on a larger model if it needs more detail.
Simple edits and combinations
Change colors, swap a backdrop or add an object to a photo. Add up to four pictures to combine elements from each.
Edits keep your photo's size
When you edit and leave the aspect ratio untouched, the result follows the size and shape of the photo you uploaded.
Realism and text
Its model page on fal describes improved realism and better rendering of text inside images, with editing built in.
FLUX.2 Klein prices in credits
| Setting | Credits |
|---|---|
| Standard | 11 |
- Prices are per image. Reference photos do not change the price.
- The exact price for your settings is shown on the Create button before you start.
- It has the lowest starting price of the image models in Banana Studio.
- The 7-day introduction ($1.99, 240 credits) covers 21 images, and the Pro plan's 2,200 monthly credits cover about 200 images.
Plans: $1.99 for a 7-day introduction with 240 credits, then $29.99 a month for 2,200 credits, or $59.97 every 3 months with 2,200 credits each month. The introduction is a paid period, not a free trial. See plans · How credits work
Output sizes
| Aspect ratio | Standard |
|---|---|
| 1:1 | 1,024 × 1,024 |
| 16:9 | 1,344 × 768 |
| 9:16 | 768 × 1,344 |
How to create with FLUX.2 Klein
Write a short prompt
Describe the subject, the setting and the style in a sentence or two.
Choose square, wide or tall
FLUX.2 Klein offers 1:1, 16:9 and 9:16. There is one quality setting.
Create, compare, refine
Make a few versions, keep the best and adjust the wording. Each version is billed separately.
Try a prompt
Who uses FLUX.2 Klein
Students and hobbyists
Explore styles and compositions on a small credit budget without worrying about every try.
Content planners
Mock up post ideas and storyboards before committing credits to the final artwork.
Social media managers
Test several looks for one post in square, wide and tall formats before choosing a direction.
Good to know
- In the model menu it is listed as FLUX.2 Klein 9B.
- Only three shapes are offered: square, 16:9 and 9:16. For 4:3, 3:2 and other shapes, use Nano Banana Pro or GPT Image 2.5.
- There is no 4K setting. Square images are 1024 by 1024 pixels.
- FLUX.2 Klein is made by Black Forest Labs. Banana Studio is an independent app that offers it and is not affiliated with Black Forest Labs.
- Page reviewed October 25, 2026.
Questions about FLUX.2 Klein
Why choose FLUX.2 Klein over a bigger model?
Price and pace of exploration. It is built for trying many ideas without spending much. When a draft is right, recreate it on Nano Banana Pro or GPT Image 2.5 if you need more detail or a larger size.
How many credits does FLUX.2 Klein use?
FLUX.2 Klein costs 11 credits per image. The 7-day introduction ($1.99, 240 credits) covers 21 images, and the Pro plan's 2,200 monthly credits cover about 200 images. The exact price for your settings is shown on the Create button before you start.
Which aspect ratios does FLUX.2 Klein support?
Square (1:1), wide (16:9) and tall (9:16). When you edit a photo and keep the default setting, the result follows the shape of your own picture.
Is FLUX.2 Klein the same as FLUX Kontext?
No. Banana Studio replaced FLUX.1 Kontext with FLUX.2 Klein in October 2026. Anything you made earlier stays in your History.
Can I combine several photos with FLUX.2 Klein?
Yes. In Change a photo you can add up to four pictures and describe how to combine them, for example a person, a hat and a beach.
How do I get better results from a short prompt?
Name the subject first, then the setting, the light and the style. For example: a red bicycle, leaning on a brick wall, late afternoon sun, film photo.