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.

Overview Specifications Activity Performance Uptime Examples API Reference

Compare

Pricing-50%

Pay-as-you-go rates for this model. More details in the billing guide.

Image

$0.0045

Capabilities

Input Modalities

TextImage

Output Modalities

Image

Supported Parameters

Available parameters for API requests

Size

Usage Analytics

Token usage of this model on our platform

Not enough activity data to display a chart

Throughput

Not enough throughput data

Time-To-First-Token (TTFT)

Not enough TTFT data

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)