[ black-forest-labs ]

FLUX-2-klein-4b

Billed at a published markup over the upstream list price. Priced in USD per image unit: 1024 x 1024 output pixels at the model's default step count, paid in USDF, with no subscription and no minimum.

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flux-2-klein-4b·Unavailable·image·Max output pixels: 3,686,400 pixels

No route to this model is enabled right now. Requests for it are refused with the error code model_unavailable before any balance is held, so nothing is charged. The listed prices apply once a route is enabled.

Output

$0.0175

USD per image unit: 1024 x 1024 output pixels at the model's default step count

Max output pixels

3,686,400

pixels

Model ID
flux-2-klein-4b
Modality
image
Unit
USD per image unit: 1024 x 1024 output pixels at the model's default step count
Status
Unavailable
Last verified
—
Endpoints
/v1/images/generations
Max output pixels
3,686,400 pixels
Images per request
4 images
Image unit
1024 x 1024 px
Pricing basis
Markup
Cache write (5 min)
—
Cache write (1 h)
—
Routes enabled
1 of 1
Price sheet
2026-10-09.1

Routes

ProviderEnabledUpstream inputUpstream output
deepinfraYes$0.00USD per image unit: 1024 x 1024 output pixels at the model's default step count$0.014USD per image unit: 1024 x 1024 output pixels at the model's default step count

Make your first request

Responses include a receipt with the exact cost.

No account: send the same request to /x402/v1/images/generations without credentials and the gateway answers 402 with the quote. Pay per request.

This model has no enabled route right now, so the request below is refused with model_unavailable until a route is enabled. Nothing is charged for a refused request.

curl https://api.usdf.fi/v1/images/generations \
  -H "Authorization: Bearer $FOUNDRY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "flux-2-klein-4b", "prompt": "A lighthouse at dusk", "n": 1, "size": "1024x1024"}'