Flux 2 | Flex
Generate images from text prompts with flexible control over guidance scale, inference steps, and prompt expansion. Balances quality and creative freedom.
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-flex",
"version": "0.0.1",
"input": {
"prompt": "a serene zen garden with raked sand patterns and moss-covered stones",
"image_size": "landscape_4_3",
"guidance_scale": 3.5
}
}'
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
| enable_prompt_expansion | boolean | true | Whether to expand the prompt using the model's own knowledge. |
| enable_safety_checker | boolean | true | Whether to enable the safety checker. |
| guidance_scale | number | 3.5 | The guidance scale to use for the generation. |
| image_size | string | landscape_4_3 | The size of the generated image. enum: square_hd, square, portrait_4_3, portrait_16_9, landscape_4_3, landscape_16_9 |
| num_inference_steps | integer | 28 | The number of inference steps to perform. |
| output_format | string | jpeg | The format of the generated image. enum: jpeg, png |
| prompt | string | The prompt to generate an image from. | |
| safety_tolerance | string | 2 | The safety tolerance level. 1 is most strict, 5 is most permissive. enum: 1, 2, 3, 4, 5 |
| seed | integer | The seed to use for the generation. |
Examples
High guidance landscape:
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-flex",
"version": "0.0.1",
"input": {
"prompt": "aerial view of terraced rice paddies at sunrise, golden light, mist",
"image_size": "landscape_16_9",
"guidance_scale": 5.0,
"num_inference_steps": 35,
"output_format": "png"
}
}'
Creative portrait with low guidance:
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-flex",
"version": "0.0.1",
"input": {
"prompt": "abstract portrait, double exposure, forest and face merging",
"image_size": "portrait_4_3",
"guidance_scale": 2.0,
"enable_prompt_expansion": false,
"seed": 42
}
}'
Related Models
- Flux 2 | Flex | Edit - Image editing with Flex
- Flux 2 Pro - Pro-quality generation
- Flux 2 - Standard Flux 2 generation