Flux.1 Dev

Flux Dev is a 12 billion parameter rectified flow transformer capable of generating images from text descriptions

~20.55s

~$0.02

~20.55s

~$0.02

 1import requests
 2import json
 3
 4url = "https://api.segmind.com/v1/flux-dev"
 5headers = {
 6    "x-api-key": "YOUR_API_KEY",
 7    "Content-Type": "application/json"
 8}
 9
10data = {
11    "prompt": "detailed cinematic dof render of an old dusty detailed CRT monitor on a wooden desk in a dim room with items around, messy dirty room. On the screen are the letters “FLUX dev” glowing softly. High detail hard surface render",
12    "samples": 1,
13    "guidance": 3.5,
14    "steps": 25,
15    "prompt_strength": 0.8,
16    "aspect_ratio": "1:1",
17    "seed": 46588,
18    "output_format": "webp",
19    "output_quality": 80
20}
21
22response = requests.post(url, headers=headers, json=data)
23
24if response.status_code == 200:
25    result = response.json()
26    print(json.dumps(result, indent=2))
27else:
28    print(f"Error: {response.status_code}")
29    print(response.text)

 1import requests
 2import json
 3
 4url = "https://api.segmind.com/v1/flux-dev"
 5headers = {
 6    "x-api-key": "YOUR_API_KEY",
 7    "Content-Type": "application/json"
 8}
 9
10data = {
11    "prompt": "detailed cinematic dof render of an old dusty detailed CRT monitor on a wooden desk in a dim room with items around, messy dirty room. On the screen are the letters “FLUX dev” glowing softly. High detail hard surface render",
12    "samples": 1,
13    "guidance": 3.5,
14    "steps": 25,
15    "prompt_strength": 0.8,
16    "aspect_ratio": "1:1",
17    "seed": 46588,
18    "output_format": "webp",
19    "output_quality": 80
20}
21
22response = requests.post(url, headers=headers, json=data)
23
24if response.status_code == 200:
25    result = response.json()
26    print(json.dumps(result, indent=2))
27else:
28    print(f"Error: {response.status_code}")
29    print(response.text)

API Endpoint

POSThttps://api.segmind.com/v1/flux-dev

Parameters

promptrequired

string

Text prompt for image generation

Default:

"detailed cinematic dof render of an old dusty detailed CRT monitor on a wooden desk in a dim room with items around, messy dirty room. On the screen are the letters “FLUX dev” glowing softly. High detail hard surface render"

aspect_ratiooptional

string

Type of scheduler.

Default: ""

Allowed values :

"1:1""16:9""21:9""2:3""3:2""4:5""5:4""9:16""9:21"

guidanceoptional

integer

guidance

Default: 3Range: 0 - 10

output_formatoptional

string

An enumeration.

Default: "webp"

Allowed values :

"webp""jpg""png"

output_qualityoptional

integer

Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs

Default: 80Range: 0 - 100

prompt_strengthoptional

number

Prompt Strength

Default: 0.8Range: 0 - 1

samplesoptional

integer

Number of samples to generate.

Default: 1Range: 1 - 4

seedoptional

integer

Seed for random number generation

Default: 46588

stepsoptional

integer

number of steps

Default: 25Range: 1 - 50

Response Type

Returns: Text/JSON

Common Error Codes

The API returns standard HTTP status codes. Detailed error messages are provided in the response body.

400

Bad Request

Invalid parameters or request format

401

Unauthorized

Missing or invalid API key

403

Forbidden

Insufficient permissions

404

Not Found

Model or endpoint not found

406

Insufficient Credits

Not enough credits to process request

429

Rate Limited

Too many requests

500

Server Error

Internal server error

502

Bad Gateway

Service temporarily unavailable

504

Timeout

Request timed out