Image model · from 3 credits
Generate images with Flux 2 Klein
Flux 2 Klein is the compact version of Black Forest Labs' second Flux generation: nine billion parameters, output clearly above Flux Schnell, at a cost that stays near the bottom of the catalogue. It is the right middle step when Schnell's drafts stop being enough but the budget of a long exploration still matters. It holds simple scenes, objects and moods well, and hands over to Flux 2 Pro when fine detail becomes the subject.
Capabilities
- Resolutions: 1K, 2K
Flux 2 Klein, the second generation in compact form
Klein is the small member of Black Forest Labs' second generation Flux family: nine billion parameters, against far heavier models for Pro and Max. That compactness is a design choice, not an accident. The model was distilled from the full family, it keeps the Flux 2 way of composing a scene and rendering light, and mostly gives ground on the finest detail.
In the catalogue it fills the gap that sat between Flux Schnell, built for quick tries, and Flux 2 Pro, built for finished images. Simple scenes, objects, sets and moods suit it well. Close up faces and text inside the image remain the territory of the larger models.
1K or 2K, what the tier changes
Klein renders at 1K by default and accepts 2K. Moving up is not an enlargement: the model genuinely draws more pixels, so more detail in textures and backgrounds, at a higher price. For an image headed to a screen, 1K is almost always enough; 2K earns its keep for print, a tight crop, or a visual that will be looked at closely.
A frugal method is to search at 1K, settle the composition, then rerun the chosen prompt at 2K. On the canvas resolution is a node setting: nothing to rewrite, and both versions stay side by side for comparison.
Klein, Pro or Max
The three Flux 2 models share one family and one way of reading a prompt, which makes moving between them painless. Klein is the entry point: it carries a long exploration without running up the bill. Flux 2 Pro takes over as soon as material, skin or embedded text becomes the subject of the image. Flux 2 Max pushes detail further still, for visuals that genuinely warrant it.
The useful habit is to start on Klein for the first few dozen attempts, then move up only for the final prompt. The difference in rendering shows on the delivered image, rarely on the drafts that serve to find the direction.
Flux 2 Klein next to its closest siblings
Figures pulled from the same registry as billing: when a price or a cap changes, this table changes with it.
| Flux 2 Klein | GPT Image 2.5 Flare | GPT Image 2.5 Sunburst | |
|---|---|---|---|
| Base price | 3 credits / image | 3 credits / image | 3 credits / image |
| Image editing | No | Yes | Yes |
What Flux 2 Klein produces
Renders made on Imaginode with this model, untouched.
How to use it on Imaginode
- 1Create a project and add an Image node from the toolbar.
- 2Pick Flux 2 Klein in the selector: the exact price shows on the Generate button.
- 3Write your prompt (the magic wand can enrich it for 1 credit) and generate. Technical failures are refunded automatically.
Frequently asked questions
Are Flux 2 Klein and Flux Dev the same model?
No. Flux Dev belonged to the first Flux generation. Klein is the compact model of the second generation, more recent and cleaner at a comparable cost. Klein is what this page serves.
Which resolution should I pick?
1K to search and for any on screen use, 2K when the image will be printed, cropped tight or examined closely. 2K costs more because the model actually draws more pixels.
Can I give it a starting image?
No, Klein generates from text alone. To transform an existing image you need an editing model such as Flux Kontext or Seedream 5 Pro, which the canvas wires behind your image without leaving the project.
How much does an image generated with Flux 2 Klein cost?
3 credits per image, about $0.04 (1 credit = $0.012). The exact cost shows on the Generate button before you click, and any failed generation is refunded automatically within seconds.
Can Flux 2 Klein edit an existing image?
Flux 2 Klein generates from text only. To retouch an existing render, one click creates a pre-wired Flux Kontext node dedicated to editing: both models draw from the same credits.
Can I try Flux 2 Klein for free?
Yes: signing up grants trial credits, no credit card required. Enough to test Flux 2 Klein in real conditions before deciding on a plan or a top-up.
Do I need to install anything to use Flux 2 Klein?
No: Flux 2 Klein runs server-side, in the browser, mobile included. Imaginode's node canvas wires its renders to the other models (references, camera, styles) with nothing to install.
Try Flux 2 Klein on a real canvas
105 models, one account, credits that work everywhere. The price always shows before you generate.
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Flux Schnell
Seedream 5 Lite