flux-2-klein-4b

Coming soon
black-forest-labs

The fastest model of the Flux 2 family. Frontier visual intelligence — state-of-the-art image generation and editing from Black Forest Labs

Modality

Chat

Region

US

Published

Jul 21, 2026

Use it via the API

flux-2-klein-4b works with any OpenAI-compatible SDK — point the base URL at https://preprod-backend.sovereigneg.com/v1 and use your SovereignEG API key.

Run inference

OpenAI-compatible — POST /v1/chat/completions — drop-in for any OpenAI SDK.

from openai import OpenAI

client = OpenAI(
    base_url="https://preprod-backend.sovereigneg.com/v1",
    api_key="YOUR_API_KEY",
)

response = client.chat.completions.create(
    model="flux-2-klein-4b",
    messages=[
        {"role": "user", "content": "What are some fun things to do in Cairo?"}
    ],
)

print(response.choices[0].message.content)

Frequently asked questions

Where is flux-2-klein-4b hosted?

flux-2-klein-4b is served from US (US-hosted inference).

How do I use flux-2-klein-4b via the API?

flux-2-klein-4b is available through the OpenAI-compatible SovereignEG API: point your SDK's base URL at https://preprod-backend.sovereigneg.com/v1 and call /v1/chat/completions with model "flux-2-klein-4b" and your API key.