🚀 One API for every frontier model on FastInfra

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Transparent per-token pricing → compare providers on FastInfra

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OpenAI-compatible chat completions → start in minutes

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FLUX 1.1 Pro Ultra API

Run black-forest-labs/FLUX-1.1-pro-Ultra through FastInfra's API. Pay per token, no subscription, routed to the cheapest available provider.

Pricing

FLUX 1.1 Pro Ultra pricing

Billed per token used. Prices sync automatically from wholesale providers.

Direction Price per 1M tokens
Input—
Output—
Availability

1 route available

Requests route to route-18 by default (lowest cost). FastInfra fails over automatically if a route is unavailable.

Route label Model ID
route-18 black-forest-labs/FLUX-1.1-pro-Ultra
Quickstart

Call FLUX 1.1 Pro Ultra in 30 seconds

Works with any OpenAI SDK — change the base URL and API key only.

Python

from openai import OpenAI

client = OpenAI(api_key="YOUR_API_KEY", base_url="https://api.fastinfra.ai/v1")

response = client.chat.completions.create(
    model="black-forest-labs/FLUX-1.1-pro-Ultra",
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

curl

curl https://api.fastinfra.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "black-forest-labs/FLUX-1.1-pro-Ultra",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
FAQ

FLUX 1.1 Pro Ultra — common questions

How much does the black-forest-labs/FLUX-1.1-pro-Ultra API cost?

On FastInfra, black-forest-labs/FLUX-1.1-pro-Ultra costs Pay-per-token pricing via automatic routing. Billing is per token used, with no subscription.

Is black-forest-labs/FLUX-1.1-pro-Ultra compatible with the OpenAI SDK?

Yes. FastInfra exposes black-forest-labs/FLUX-1.1-pro-Ultra through an OpenAI-compatible endpoint at https://api.fastinfra.ai/v1 — point any OpenAI SDK at that base URL with a FastInfra API key and keep your existing code.

How does routing work for black-forest-labs/FLUX-1.1-pro-Ultra?

black-forest-labs/FLUX-1.1-pro-Ultra is available on 1 route(s): route-18. Requests use route-18 by default (lowest cost). FastInfra fails over automatically if a route is unavailable.