Image GenerationBlack Forest LabsHotNew

FLUX.1 Pro API

State-of-the-art image generation with unmatched prompt adherence and photorealistic quality.

Parameters

12B

Context

N/A

Organization

Black Forest Labs

Pricing

$0.055

per image

Try FLUX.1 Pro for Free

Quick Start

Start using FLUX.1 Pro in minutes. VoltageGPU provides an OpenAI-compatible API — just change the base_url.

Python (OpenAI SDK)
pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://api.voltagegpu.com/v1",
    api_key="YOUR_VOLTAGE_API_KEY"
)

response = client.images.generate(
    model="black-forest-labs/FLUX.1-pro",
    prompt="A futuristic city skyline at sunset with flying cars and neon signs, photorealistic, 8k",
    n=1,
    size="1024x1024"
)

image_url = response.data[0].url
print(f"Generated image: {image_url}")
cURL
Terminal
curl -X POST https://api.voltagegpu.com/v1/images/generations \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_VOLTAGE_API_KEY" \
  -d '{
    "model": "black-forest-labs/FLUX.1-pro",
    "prompt": "A futuristic city skyline at sunset with flying cars and neon signs, photorealistic, 8k",
    "n": 1,
    "size": "1024x1024"
  }'

Pricing

ComponentPriceUnit
Image Generation$0.055per image

New accounts receive $5 free credit. No credit card required to start.


Capabilities & Benchmarks

FLUX.1 Pro generates images at resolutions from 256x256 to 2048x2048 with industry-leading quality. It excels at photorealistic images, artistic styles, text rendering within images, complex compositions with multiple subjects, accurate human anatomy, and consistent lighting. The model supports aspect ratio control, guidance scale adjustment, and seed-based reproducibility.


About FLUX.1 Pro

FLUX.1 Pro is the flagship image generation model from Black Forest Labs, the team behind Stable Diffusion. It delivers state-of-the-art image quality with exceptional prompt adherence, photorealistic rendering, and creative versatility. Built on a novel rectified flow transformer architecture, FLUX.1 Pro generates high-resolution images (up to 2048x2048) with remarkable detail, accurate text rendering, and natural lighting. It surpasses Midjourney v6, DALL-E 3, and Stable Diffusion XL in head-to-head quality comparisons.


Use Cases

📸

Marketing & Advertising

Generate professional product images, ad creatives, and social media content.

🎨

Web & App Design

Create UI mockups, hero images, icons, and design assets programmatically.

🛒

E-commerce

Generate product photography, lifestyle shots, and catalog images at scale.

🎮

Game & Entertainment

Create concept art, character designs, environments, and game assets.

🖼️

Content Creation

Generate blog illustrations, thumbnails, and visual content for media platforms.


API Reference

Endpoint

POSThttps://api.voltagegpu.com/v1/images/generations

Headers

AuthorizationBearer YOUR_VOLTAGE_API_KEYRequired
Content-Typeapplication/jsonRequired

Model ID

black-forest-labs/FLUX.1-pro

Use this value as the model parameter in your API requests.

Example Request

curl -X POST https://api.voltagegpu.com/v1/images/generations \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_VOLTAGE_API_KEY" \
  -d '{
    "model": "black-forest-labs/FLUX.1-pro",
    "prompt": "A futuristic city skyline at sunset with flying cars and neon signs, photorealistic, 8k",
    "n": 1,
    "size": "1024x1024"
  }'



Frequently Asked Questions

How does FLUX.1 Pro compare to Midjourney?

FLUX.1 Pro matches or exceeds Midjourney v6 in image quality while being available via API for programmatic access. It offers better prompt adherence, more accurate text rendering in images, and more consistent results. At $0.055/image, it is also more cost-effective for batch generation.

What resolutions does FLUX.1 Pro support?

FLUX.1 Pro supports resolutions from 256x256 up to 2048x2048 pixels. You can specify any aspect ratio, and the model will generate images at the closest supported resolution. Common sizes include 1024x1024, 1024x768, and 1920x1080.

Can FLUX.1 Pro render text in images?

Yes, FLUX.1 Pro is one of the best models for rendering text within images. It can accurately display text on signs, labels, book covers, and other surfaces, though very long text strings may still have occasional errors.

How fast is FLUX.1 Pro image generation?

FLUX.1 Pro typically generates a 1024x1024 image in 3-8 seconds on VoltageGPU's infrastructure, depending on the complexity of the prompt and current load.

Does FLUX.1 Pro have content filters?

VoltageGPU applies standard content safety filters to all image generation requests. The model will not generate harmful, illegal, or explicit content.


Start using FLUX.1 Pro today

Get $5 free credit when you sign up. No credit card required. Deploy in under 30 seconds with our OpenAI-compatible API.