Flux-2-Klein-4B Text-to-Image with LoRA pairs the lightweight Klein 4B model with custom LoRA adapters so you can dial in specific styles, characters, or aesthetics. Ideal for stylized branding, character art, and personalized look-and-feel without retraining a base model.
About this model
Flux-2-Klein-4B Text-to-Image with LoRA combines the lightweight Klein 4B base model with custom LoRA adapters, letting you condition generations on a specific style, character, or aesthetic without retraining a base model. It is ideal for stylized branding, mascots, character art, and any workflow that benefits from a consistent visual look applied on top of a fast, cost-effective generator.
The model accepts up to three LoRA adapters per generation along with a scale multiplier, giving you precise control over how strongly each LoRA influences the output. Combined with simple aspect-ratio control, it fits cleanly into rapid iteration loops where teams need consistent stylized visuals across many prompts.
Cost analysis
| Provider | Cost | Notes |
|---|---|---|
| muapiapp | $0.02 per generation | muapiapp offers Klein 4B with LoRA at a flat per-image price regardless of LoRA count, undercutting comparable LoRA-enabled offerings. |
| Fal.ai | Not available | Flux-2 Klein with LoRA is not generally available on Fal.ai at the time of writing. |
| Replicate | Not available | Flux-2 Klein with LoRA is not generally available on Replicate at the time of writing. |
muapiapp offers Klein 4B with LoRA at a flat per-image price regardless of LoRA count, undercutting comparable LoRA-enabled offerings.
Flux-2 Klein with LoRA is not generally available on Fal.ai at the time of writing.
Flux-2 Klein with LoRA is not generally available on Replicate at the time of writing.
* Competitor pricing is estimated based on similar model architectures and usage tiers.
Configuration schema
| Parameter | Type | Description | Default |
|---|---|---|---|
| Prompt | string | Text prompt describing the image. | A small round robot sitting at a café table outdoors, holding a tiny cup of coffee, soft morning light, cute illustration style. |
| LoRA List | array | Up to 3 LoRA adapters to apply during generation. | [object Object] |
| Aspect Ratio | Enum (7 options) | The aspect ratio of the generated image | 1:1 |
Text prompt describing the image.
A small round robot sitting at a café table outdoors, holding a tiny cup of coffee, soft morning light, cute illustration style.Up to 3 LoRA adapters to apply during generation.
[object Object]The aspect ratio of the generated image
1:1Developer documentation
Write your prompt: Describe the subject, scene, and mood. Keep prompts focused so the LoRA's style can lead the look.
Pick LoRA adapters: Provide up to 3 LoRA entries in lora_list, each with a path (URL or path to the LoRA weights) and a scale (typically 0.5 - 1.5).
Choose an aspect ratio: Pick from 1:1, 16:9, 9:16, 3:4, 4:3, 21:9, or 9:21 to control the framing.
Submit and review: Send the request to flux-2-klein-4b-text-to-image-lora. The result returns asynchronously as an image URL. Tweak scale if the LoRA effect is too weak or too strong and re-run.
Frequently asked
Up to three LoRA adapters per request via the `lora_list` field. Each entry has a `path` and a `scale` weight.
A `scale` of 1.0 is the typical default. Use 0.5 - 0.8 to soften the LoRA's influence or 1.1 - 1.5 to push it more strongly. Values above ~1.5 often degrade quality.
Any publicly reachable HTTPS URL works (e.g. Hugging Face, Civitai, S3). The `path` field accepts a direct download URL to the LoRA file.
The 4B variant is lighter and cheaper, ideal for high-volume stylized generation. The 9B variant trades cost for higher fidelity, lighting, and detail when you need premium output.