Flux Schnell - Image Generator

Ultra-fast AI image generation model by Black Forest Labs. Flux Schnell delivers rapid image generation optimized for speed with 1-4 inference steps, perfect for quick iterations, prototyping, and real-time applications.

Endpoint

POSThttps://api.1min.ai/api/features

Request Headers

Field	Value
API-KEY	<api-key>
Content-Type	application/json

Parameters

Parameter	Type	Required	Description
type	string	Yes	Feature type identifier. Must be IMAGE_GENERATOR
model	string	Yes	AI model identifier. Must be black-forest-labs/flux-schnell
promptObject	object	Yes	Configuration object containing all generation parameters

Prompt Object Parameters

Parameter	Type	Required	Description	Default
prompt	string	Yes	Text description of the image to generate	-
aspect_ratio	string	No	Image aspect ratio (1:1, 16:9, 9:16, 3:2, 2:3, 4:5, 5:4, custom)	1:1
output_quality	number	No	Output image quality (0-100)	80
num_inference_steps	number	No	Number of inference steps (1-4)	4
megapixels	string	No	Output resolution in megapixels (0.25, 1)	1
go_fast	boolean	No	Enable fastest generation mode	true
disable_safety_checker	boolean	No	Disable built-in safety filtering	false
seed	number	No	Random seed for reproducibility (0-4294967295)	Random

Supported Aspect Ratios

Ratio	Use Case
1:1	Square images, social media posts
16:9	Widescreen, video thumbnails
9:16	Vertical video, mobile screens
3:2	Standard photography
2:3	Portrait photography
4:5	Instagram posts
5:4	Landscape photography
custom	Use specific width/height values

Speed Settings

Setting	Range	Description
Inference Steps	1-4	Fewer steps = faster generation (optimized for speed)
Go Fast	true/false	Enable maximum speed mode
Megapixels	0.25, 1	Output resolution (0.25 = ~512×512, 1 = ~1024×1024)
Output Quality	0-100	Image compression quality for final output

Code Examples

cURL

curl --location 'https://api.1min.ai/api/features' \
--header 'API-KEY: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"type": "IMAGE_GENERATOR",
"model": "black-forest-labs/flux-schnell",
"promptObject": {
  "prompt": "Modern minimalist logo design, clean lines, professional",
  "aspect_ratio": "1:1",
  "num_inference_steps": 4,
  "go_fast": true,
  "megapixels": "1",
  "output_quality": 80
}
}'

JavaScript

fetch('https://api.1min.ai/api/features', {
method: 'POST',
headers: {
  'Content-Type': 'application/json',
  'API-KEY': 'YOUR_API_KEY'
},
body: JSON.stringify({
  type: 'IMAGE_GENERATOR',
  model: 'black-forest-labs/flux-schnell',
  promptObject: {
    prompt: 'Modern minimalist logo design, clean lines, professional',
    aspect_ratio: '1:1',
    num_inference_steps: 4,
    go_fast: true,
    megapixels: '1',
    output_quality: 80
  }
})
})

Python

import requests

url = "https://api.1min.ai/api/features"
headers = {
"Content-Type": "application/json",
"API-KEY": "YOUR_API_KEY"
}

data = {
"type": "IMAGE_GENERATOR",
"model": "black-forest-labs/flux-schnell",
"promptObject": {
  "prompt": "Modern minimalist logo design, clean lines, professional",
  "aspect_ratio": "1:1",
  "num_inference_steps": 4,
  "go_fast": True,
  "megapixels": "1",
  "output_quality": 80
}
}

response = requests.post(url, headers=headers, json=data)

Interactive Playground

API Playground

GETPOSTPUTDELETEhttps://api.1min.ai/api/features

AI Model *Flux Schnell - Black Forest Labs

Prompt *

Describe the image you want to generate

Modern minimalist logo design, clean lines, professional

Aspect Ratio

Choose aspect ratio for your image

1:1 - Square16:9 - Widescreen9:16 - Vertical video3:2 - Photography2:3 - Portrait4:5 - Instagram5:4 - Landscape

Num Inference Steps

Number of inference steps (1-4, optimized for speed)

Megapixels

Output resolution in megapixels

0.25 MP (~512×512)1 MP (~1024×1024)

Go Fast

Enable fastest generation mode

TrueFalse

Disable Safety Checker

Disable built-in safety filtering

TrueFalse

Output Quality

Output image quality (0-100)

Seed

Random seed for reproducibility (0-4294967295)

Generated cURL Command:

curl -X POST "https://api.1min.ai/api/features" \
  -H "API-KEY: <your-api-key>" \
  -H "Content-Type: application/json" \
  -d '{
  "type": "IMAGE_GENERATOR",
  "model": "black-forest-labs/flux-schnell",
  "promptObject": {
    "prompt": "Modern minimalist logo design, clean lines, professional",
    "aspect_ratio": "1:1",
    "num_inference_steps": 4,
    "go_fast": true,
    "megapixels": "1",
    "output_quality": 80
  }
}'

Response Format

{
"aiRecord": {
  "uuid": "90a25e99-a544-42aa-bcd2-ee2c9a860cfe",
  "userId": "c937fbcc-fa8f-4565-a440-c4d87f56fcb2",
  "teamId": "a4e176b2-dabb-451e-9c58-62b451fa9630",
  "teamUser": {
    "teamId": "a4e176b2-dabb-451e-9c58-62b451fa9630",
    "userId": "c937fbcc-fa8f-4565-a440-c4d87f56fcb2",
    "userName": "John Doe",
    "userAvatar": "https://lh3.googleusercontent.com/a/ACg8ocLqgsNsHRfmWF9d-E1RvJetVsEzxNOsOg-NXWNTpMxLDPJbwELI=s96-c",
    "status": "ACTIVE",
    "role": "ADMIN",
    "creditLimit": 100000000,
    "usedCredit": 2450205,
    "createdAt": "2025-10-20T04:13:40.847Z",
    "createdBy": "SYSTEM",
    "updatedAt": "2025-10-24T08:09:25.898Z",
    "updatedBy": "SYSTEM"
  },
  "model": "black-forest-labs/flux-schnell",
  "type": "IMAGE_GENERATOR",
  "metadata": null,
  "rating": null,
  "feedback": null,
  "conversationId": null,
  "status": "SUCCESS",
  "createdAt": "2025-10-24T08:13:08.750Z",
  "aiRecordDetail": {
    "promptObject": {
      "prompt": "Modern minimalist logo design, clean lines, professional",
      "go_fast": true,
      "megapixels": "1",
      "aspect_ratio": "1:1",
      "output_quality": 80,
      "num_inference_steps": 4
    },
    "resultObject": [
      "development/images/2025_10_24_15_13_11_086_302437.undefined"
    ],
    "responseObject": {}
  },
  "additionalData": null,
  "temporaryUrl": "https://s3.us-east-1.amazonaws.com/asset.1min.ai/development/images/2025_10_24_15_13_11_086_302437.undefined?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIAVRUVQEFIHSKAXGE7%2F20251024%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20251024T081312Z&X-Amz-Expires=604800&X-Amz-Signature=1e1ade1d732bea11309222e9622dad770d8acb7363113a237d2931bb2c337518&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject"
}
}

Use Cases

• Rapid Prototyping: Quick concept visualization and design iteration
• Real-time Applications: Interactive tools requiring fast image generation
• Batch Processing: Generate multiple variations quickly
• Mobile Applications: Fast generation for mobile and web apps
• Creative Exploration: Quick testing of different visual concepts

Tips for Best Results

1. Speed Optimization:

   • Use 4 steps for best quality-to-speed ratio
   • Enable "Go Fast" for maximum speed
   • Use 1-2 steps for ultra-fast drafts

2. Quality vs Speed:

   • 1 MP for final outputs
   • 0.25 MP for rapid iterations
   • Higher quality settings increase generation time slightly

3. Prompt Strategy:

   • Keep prompts concise for faster processing
   • Focus on key visual elements
   • Use clear, descriptive language

Notes

Quality Trade-off

While extremely fast, this model may have lower detail compared to Flux Pro or Flux Dev. Use for rapid iterations and prototyping.