FLUX 3 Klein
AI Image Generator
FLUX 3 Klein is the small, fast image model of Black Forest Labs’ FLUX 3 family, released on October 15, 2026 with open weights. It makes and edits images from a prompt and up to 10 reference images, at 1K or 2K, for under one credit at 1K.
Prices
| Setting | Credits per image |
|---|---|
| 1K | 0.65 |
| 2K | 1 |
FLUX 3 Klein comes with the 3-day free trial or a plan; the free plan gives 10 credits to start on the fast models. A failed generation costs nothing.
What it takes
- Input
- Text prompt, Up to 10 reference images
- Aspect ratios
- 1:1, 3:4, 4:3, 4:5, 9:16, 16:9
Best for
- Many cheap drafts and variations
- Putting several products or references into one picture
- Quick edits of a photo you already have
Questions
- How much does FLUX 3 Klein cost?
- From 0.65 credits per image; the exact price is on the Generate button before you start. Plans start at $10 a month for 250 credits, and the same credits work with every model.
- Can I try FLUX 3 Klein for free?
- Yes, with the 3-day free trial: FLUX 3 Klein and every other model for 3 days, then a plan you can cancel any time. The free plan without a card runs the fast models.
- Is there a FLUX 3 Klein API?
- FLUX 3 Klein is not sold through the dollar API yet. You can run it from Claude or ChatGPT through the RenderHour MCP server, paid with credits.
- What if a generation fails?
- Its credits come back to your balance automatically. You pay only for results.