FLUX.1 Pro API: fal.ai's image-generation model, one key away
FLUX.1 Pro via the ApexApi gateway
The FLUX.1 professional tier. Superseded by FLUX.2 Pro, kept for pipelines tuned to its particular look. Call it through ApexApi's unified, OpenAI-compatible API with one `ak-` key, alongside every other model in the catalog. Pricing is $0.060/image per image, billed pay-per-use from your credit balance with no subscription.
FLUX.1 Pro is served through ApexApi's unified, OpenAI-compatible API. One key, one format, with smart routing and automatic failover. Provider: fal.ai.
Why FLUX.1 Pro
Text-to-image generation
High-quality image generation (and image-to-image where supported) through one API.
Transparent pricing ($0.060/image)
Pay per image from your credit balance. Failed generations aren't billed.
OpenAI-compatible
Drop-in with any OpenAI SDK. Change the base URL and key, keep your code.
Specifications
- Modality
- image
- Context window
- —
- Max output
- —
- Streaming
- —
- Tool / function calling
- —
- Vision input
- —
FLUX.1 Pro pricing
- That makes it the 14th cheapest of the 29 image models we serve, ranked on output price.
- For lighter work, FLUX.1 Schnell from the same maker costs 16.7× less — one string apart on the same key.
Getting started with FLUX.1 Pro
OpenAI-compatible. Point your client at ApexApi, swap your key, and call it. No new SDK to learn.
import requests
resp = requests.post(
"https://api.apexapi.dev/v1/images/generations",
headers={"Authorization": "Bearer <YOUR_APEXAPI_KEY>"},
json={"model": "black-forest-labs/flux-pro", "prompt": "A serene mountain lake at golden hour"},
)
print(resp.json())FLUX.1 Pro use cases
What teams build with FLUX.1 Pro on ApexApi.
Marketing & creative
On-brand visuals, ad creative, and product imagery at scale.
In-product generation
Generate images inside your app from user prompts.
Prototyping
Rapid concept art and design exploration.
FLUX.1 Pro vs other models
How it compares, and on ApexApi you can switch between any of them with a single string change, same key, same endpoint.
FLUX.1 Pro vs Nano Banana Pro
Compare FLUX.1 Pro against this model on price, capabilities, and latency. A/B them with a single key on ApexApi.
Learn more about Nano Banana Pro API →FLUX.1 Pro vs FLUX.2 Pro
Compare FLUX.1 Pro against this model on price, capabilities, and latency. A/B them with a single key on ApexApi.
Learn more about FLUX.2 Pro API →FLUX.1 Pro API: FAQ
How do I call FLUX.1 Pro through ApexApi?
Create an ApexApi key, point your client at https://api.apexapi.dev/v1, and POST to /v1/images/generations with the model set to `black-forest-labs/flux-pro`. The API is OpenAI-compatible, so an existing OpenAI SDK works once you change the base URL and key.
How much does FLUX.1 Pro cost on ApexApi?
$0.060/image, billed per image with no subscription or minimum. The exact figure is shown before you generate, so nothing is charged against a price you have not seen.
What should I use instead of FLUX.1 Pro?
From the same maker, FLUX.2 Pro costs less for lighter work. Switching is one string: it runs on the same endpoint and the same key, so there is nothing to re-integrate.
Ready to build with FLUX.1 Pro?
One API key. Every major AI model. Pay only for what you use.
Get your API key, free to start