Black Forest Labs: FLUX.2 Klein 4B

FLUX.2 [klein] 4B is the fastest and most cost-effective model in the FLUX.2 family, optimized for high-throughput use cases while maintaining excellent image quality. Pricing is based on the output...

Install on 00 Use in other agents

Takes

text, image

Makes

image, image-edit

Release date

2026-01-14

Licence

commercial

What it costs

$0.028 per image, on your AI tokens.

Where it runs

Built in: runs on your workspace's AI tokens, out of the box — no key, no separate account. Prices are final AI-token prices.

Call it from your own code

It answers at an OpenAI-compatible endpoint on your AI tokens — no separate account, no key from the model's maker.

Create a workspace API key in the Overblast console and point your base URL at https://brain.deployd.network/ai/v1. Usage bills that workspace's AI tokens, at the prices shown here.

curl https://brain.deployd.network/ai/v1/images \
  -H "Authorization: Bearer ob_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "black-forest-labs/flux.2-klein-4b",
    "prompt": "a red bicycle against a wet brick wall at night"
  }'

# → { "data": [ { "b64_json": "iVBORw0KGgo…" } ] }

The model above is the id the endpoint answers to — not this page's address.