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black-forest-labs/flux-2-klein-9b-base-lora
A version of FLUX.2 [klein] 9B-base that supports fast fine-tuned lora inference
Capabilities
Cost
Community model (estimated from hardware time)
Input Parameters
| Name | Type | Description | Default | Constraints |
|---|---|---|---|---|
prompt * | string | Text prompt for image generation. | — | — |
aspect_ratio | string | Aspect ratio for the generated image. Use 'match_input_image' to match the aspect ratio of the first input image. | "1:1" | 1:1 16:9 9:16 3:2 2:3 4:3 3:4 5:4 4:5 21:9 9:21 match_input_image |
disable_safety_checker | boolean | Disable safety checker for generated images. | false | — |
images | array | List of input images for image-to-image generation. Maximum 5 images. Must be jpeg, png, gif, or webp. | | — |
lora_scales | array | Scales for each LoRA as a list of floats. Must match the number of lora_weights. Defaults to 1.0 for each if not provided. | — | — |
lora_weights | array | LoRA weights as a list of URLs. Supports ComfyUI and native Flux Klein format LoRAs. ComfyUI LoRAs are automatically converted. | — | — |
output_format | string | Format of the output images | "jpg" | webp jpg png |
output_megapixels | string | Resolution of the output image in megapixels | "1" | 0.25 0.5 1 2 4 |
output_quality | integer | Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs. | 95 | min: 0, max: 100 |
seed | integer | Random seed. Set for reproducible generation | — | — |
prompt required string Text prompt for image generation.
aspect_ratio string Aspect ratio for the generated image. Use 'match_input_image' to match the aspect ratio of the first input image.
"1:1" disable_safety_checker boolean Disable safety checker for generated images.
false images array List of input images for image-to-image generation. Maximum 5 images. Must be jpeg, png, gif, or webp.
lora_scales array Scales for each LoRA as a list of floats. Must match the number of lora_weights. Defaults to 1.0 for each if not provided.
lora_weights array LoRA weights as a list of URLs. Supports ComfyUI and native Flux Klein format LoRAs. ComfyUI LoRAs are automatically converted.
output_format string Format of the output images
"jpg" output_megapixels string Resolution of the output image in megapixels
"1" output_quality integer Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs.
95 min: 0, max: 100 seed integer Random seed. Set for reproducible generation
5e92f3f81c77 Updated: 6/26/2026 5.6K runs