Sample prompts for Flux 3 Klein
- Prompt 01
An isometric illustration of a tiny city on a floating island, pastel colours
Use this prompt - Prompt 02
A photo of a ceramic vase with dried flowers on a linen table
Use this prompt - Prompt 03
Restyle my photo as a pixel-art game scene
Use this prompt - Prompt 04
A minimalist logo of a mountain inside a circle, black on white
Use this prompt
Flux 3 Klein is cheapest at 768 square and 1K, takes up to 10 reference pictures, and can go up to 4K.
What Flux 3 Klein can do on Revana
Flux 3 Klein by Black Forest Labs starts from a text prompt, a picture to edit or up to 10 reference pictures and makes a picture. Flux 3 Klein is the low-cost Flux 3: $0.01 at 768 square and 1K, and $0.04 at 4K against $0.61 for Flux 3. It takes up to 10 reference images.
- Starts from
- a text prompt, a picture to edit or up to 10 reference pictures
- Sizes
- 768SQ, 1K, 1.5K, 2K and 4K
- Shapes
- 1:1, 4:3, 3:4, 3:2, 2:3, 16:9, 9:16, 21:9, 9:21 and automatic
- Model id
flux-3-klein
What Flux 3 Klein costs
Flux 3 Klein is billed per image from prepaid credit (100 credits = $1). The cheapest single request is one picture at 768SQ for $0.01; 768SQ and 1K are $0.01 a picture, 1.5K and 2K $0.02, 4K $0.04. You are charged only when the picture is made.
| Size | Per picture | 10 pictures | 100 pictures |
|---|---|---|---|
| 768SQ | $0.01 | $0.10 | $1.00 |
| 1K | $0.01 | $0.10 | $1.00 |
| 1.5K | $0.02 | $0.20 | $2.00 |
| 2K | $0.02 | $0.20 | $2.00 |
| 4K | $0.04 | $0.40 | $4.00 |
Flux 3 Klein and other Black Forest Labs image models
Compared with Flux 3: At 768SQ Flux 3 Klein is $0.01 a picture against $0.05 for Flux 3; at 1K Flux 3 Klein is $0.01 a picture against $0.05 for Flux 3.
| Model | Cheapest picture | Up to | Reference pictures |
|---|---|---|---|
| Flux 3 Klein | $0.01 (768SQ) | 4K | 10 |
| Flux 3 | $0.05 (768SQ) | 4K | 10 |
| Flux 2 Pro | $0.03 (1MP) | 4MP | 8 |
| Flux 2 Max | $0.07 (1MP) | 4MP | 8 |
| Flux Kontext Pro | $0.04 (any size) | one size | 4 |
| Flux Kontext Max | $0.07 (any size) | one size | 4 |
How to start
Sign in with Google or an email link, add credit under Billing (packs from $10), then open Generate, pick Flux 3 Klein, type a prompt (and add up to 10 reference pictures if you like) and press Generate. For code, the Flux 3 Klein API page has every option and a request to copy.
Frequently asked questions
Is Flux 3 Klein free?
Your first Flux 3 Klein request is free with your first $10 top-up: when that payment goes through, we credit the cost of one picture at 768SQ ($0.01) to your account. The offer is for new accounts, one per account; you need a card for the top-up, and the $10 stays your credit for any model.
How much does one Flux 3 Klein picture cost?
From $0.01 for one picture at 768SQ, up to $0.04 at 4K. Ten pictures are $0.10.
How many pictures can I give Flux 3 Klein?
Up to 10. Add them under Generate, or pass the image links in the API request, and say in the prompt what to take from each.
Is there a waitlist or code needed for Flux 3 Klein?
Neither. Flux 3 Klein runs from the Revana dashboard in your browser, with no subscription; developers send model id flux-3-klein to the API.
Make your first Flux 3 Klein picture
Your first image is free. One account for Flux 3 Klein and every other model on Revana, billed only for jobs that succeed.