Flux 2 | Klein | 4B | Base | Text to Image
Generate images from text prompts using the lightweight Flux 2 Klein 4B Base model. Optimized for speed with only 4 inference steps by default, making it ideal for rapid prototyping and iteration.
Quick Start
Requires an each::labs API key. Get one at eachlabs.ai.
curl -X POST https://api.eachlabs.ai/v1/prediction \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-d '{
"model": "flux-2-klein-4b-base-text-to-image",
"version": "0.0.1",
"input": {
"prompt": "A cozy coffee shop interior with warm lighting and bookshelves",
"image_size": "landscape_4_3",
"num_inference_steps": 4,
"output_format": "png"
}
}'
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
| enable_safety_checker | boolean | true | If set to true, the safety checker will be enabled. |
| image_size | string | landscape_4_3 | The size of the image to generate. Options: square_hd, square, portrait_4_3, portrait_16_9, landscape_4_3, landscape_16_9 |
| num_images | integer | 1 | The number of images to generate. |
| num_inference_steps | integer | 4 | The number of inference steps to perform. |
| output_format | string | png | The format of the generated image. Options: jpeg, png, webp |
| prompt | string | - | The prompt to generate an image from. |
| seed | integer | - | The seed to use for the generation. If not provided, a random seed will be used. |
Examples
Quick generation:
curl -X POST https://api.eachlabs.ai/v1/prediction \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-d '{
"model": "flux-2-klein-4b-base-text-to-image",
"version": "0.0.1",
"input": {
"prompt": "Abstract geometric patterns in blue and gold, digital art"
}
}'
Square HD with reproducible seed:
curl -X POST https://api.eachlabs.ai/v1/prediction \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-d '{
"model": "flux-2-klein-4b-base-text-to-image",
"version": "0.0.1",
"input": {
"prompt": "Photorealistic macro shot of a dewdrop on a leaf",
"image_size": "square_hd",
"num_inference_steps": 6,
"output_format": "webp",
"seed": 42
}
}'
Related Models
- Flux 2 | Klein | 4B | Base | Edit - Edit images with the same 4B model
- Flux 2 | Klein | 9B | Base | Text to Image - Higher quality 9B variant
- Flux 2 | Klein | 4B | Text to Image - Enhanced 4B variant with guidance and acceleration