Name: FLUX.2 Klein 9B API
Brand: Black Forest Labs

Overview

What is FLUX.2 Klein 9B API?

Compact 9B FLUX.2 model for efficient image generation.

Technical Specifications
- Supported inputs: Image, Text
- Output: Image
- Endpoint: /images/generations

Performance Benchmarks
[embed]

FLUX.2 Klein 9B API Pricing
- Pricing on request

Where to Use FLUX.2 Klein 9B

High-volume image generation
Produce product visuals, thumbnails, and marketing assets programmatically at scale.

Creative and concept art
Turn text prompts into illustrations, mockups, and design explorations.

Image editing and variations
Provide a reference image to guide edits, restyles, or variations.

Code Sample
[embed]

Use cases

Real-time image generation is a documented use case for FLUX.2 Klein 9B, which is described as built for applications requiring real-time image generation without sacrificing quality.

Text-to-image generation is another documented use case for this model; the model card says it can generate images from text descriptions.

Image editing with multiple references is also documented; the model supports multi-reference editing capabilities and is described as suitable for single-reference and multi-reference editing workflows.

Interactive visual workflows are a documented fit as well, with the model described as the flagship small model for the quality-versus-latency frontier and recommended for real-time, interactive applications.

How to use FLUX.2 Klein 9B API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to blackforestlabs/flux-2-klein-9b.

import requests

r = requests.post(
    "https://api.aimlapi.com/v1/images/generations",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "blackforestlabs/flux-2-klein-9b",
      "prompt": "A cat holding a sign that says hello"
    },
)
print(r.json())

const r = await fetch("https://api.aimlapi.com/v1/images/generations", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "blackforestlabs/flux-2-klein-9b",
    "prompt": "A cat holding a sign that says hello"
  }),
});
console.log(await r.json());

curl -X POST https://api.aimlapi.com/v1/images/generations \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"blackforestlabs/flux-2-klein-9b","prompt":"A cat holding a sign that says hello"}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.