Flux 3 Image Klein

Image Generation+1 More

flux-3-klein

Black Forest Labs|Created Oct 30, 2026

Image Generation+1 More

FLUX 3 Image Klein is a compact, open-weights version of FLUX 3 Image. It supports the same features: text to image, image editing, multi reference, and bounding boxes. It runs faster and fits on consumer GPUs, down to an RTX 3090.

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Code Example

Example code for using this model through our API with Python (OpenAI SDK) or cURL. Replace placeholders with your API key and model ID.

Basic request example. Ensure API key permissions. For more details, see our documentation.

from openai import OpenAI

client = OpenAI(base_url="https://api.naga.ac/v1", api_key="YOUR_API_KEY")

resp = client.images.generate(
    model="flux-3-klein",
    prompt="A white siamese cat",
    size="1024x1024",
    n=1,
    response_format="url",
)
print(resp.data)