Submit Flux Schnell Task
curl --request POST \
--url https://api.poyo.ai/api/generate/submit \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "flux-schnell",
"callback_url": "https://your-domain.com/callback",
"input": {
"prompt": "A bright editorial photo of a compact electric bike in a modern city street",
"size": "4:3",
"n": 1,
"output_format": "png"
}
}
'import requests
url = "https://api.poyo.ai/api/generate/submit"
payload = {
"model": "flux-schnell",
"callback_url": "https://your-domain.com/callback",
"input": {
"prompt": "A bright editorial photo of a compact electric bike in a modern city street",
"size": "4:3",
"n": 1,
"output_format": "png"
}
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
model: 'flux-schnell',
callback_url: 'https://your-domain.com/callback',
input: {
prompt: 'A bright editorial photo of a compact electric bike in a modern city street',
size: '4:3',
n: 1,
output_format: 'png'
}
})
};
fetch('https://api.poyo.ai/api/generate/submit', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.poyo.ai/api/generate/submit",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'model' => 'flux-schnell',
'callback_url' => 'https://your-domain.com/callback',
'input' => [
'prompt' => 'A bright editorial photo of a compact electric bike in a modern city street',
'size' => '4:3',
'n' => 1,
'output_format' => 'png'
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.poyo.ai/api/generate/submit"
payload := strings.NewReader("{\n \"model\": \"flux-schnell\",\n \"callback_url\": \"https://your-domain.com/callback\",\n \"input\": {\n \"prompt\": \"A bright editorial photo of a compact electric bike in a modern city street\",\n \"size\": \"4:3\",\n \"n\": 1,\n \"output_format\": \"png\"\n }\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.poyo.ai/api/generate/submit")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"flux-schnell\",\n \"callback_url\": \"https://your-domain.com/callback\",\n \"input\": {\n \"prompt\": \"A bright editorial photo of a compact electric bike in a modern city street\",\n \"size\": \"4:3\",\n \"n\": 1,\n \"output_format\": \"png\"\n }\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.poyo.ai/api/generate/submit")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"model\": \"flux-schnell\",\n \"callback_url\": \"https://your-domain.com/callback\",\n \"input\": {\n \"prompt\": \"A bright editorial photo of a compact electric bike in a modern city street\",\n \"size\": \"4:3\",\n \"n\": 1,\n \"output_format\": \"png\"\n }\n}"
response = http.request(request)
puts response.read_body{
"code": 200,
"data": {
"task_id": "task-unified-1757165031-uyujaw3d",
"status": "not_started",
"created_time": "2026-06-26T10:30:00"
}
}Flux
Flux Schnell Image Generation
Flux Schnell fast text-to-image generation
POST
/
api
/
generate
/
submit
Submit Flux Schnell Task
curl --request POST \
--url https://api.poyo.ai/api/generate/submit \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "flux-schnell",
"callback_url": "https://your-domain.com/callback",
"input": {
"prompt": "A bright editorial photo of a compact electric bike in a modern city street",
"size": "4:3",
"n": 1,
"output_format": "png"
}
}
'import requests
url = "https://api.poyo.ai/api/generate/submit"
payload = {
"model": "flux-schnell",
"callback_url": "https://your-domain.com/callback",
"input": {
"prompt": "A bright editorial photo of a compact electric bike in a modern city street",
"size": "4:3",
"n": 1,
"output_format": "png"
}
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
model: 'flux-schnell',
callback_url: 'https://your-domain.com/callback',
input: {
prompt: 'A bright editorial photo of a compact electric bike in a modern city street',
size: '4:3',
n: 1,
output_format: 'png'
}
})
};
fetch('https://api.poyo.ai/api/generate/submit', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.poyo.ai/api/generate/submit",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'model' => 'flux-schnell',
'callback_url' => 'https://your-domain.com/callback',
'input' => [
'prompt' => 'A bright editorial photo of a compact electric bike in a modern city street',
'size' => '4:3',
'n' => 1,
'output_format' => 'png'
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.poyo.ai/api/generate/submit"
payload := strings.NewReader("{\n \"model\": \"flux-schnell\",\n \"callback_url\": \"https://your-domain.com/callback\",\n \"input\": {\n \"prompt\": \"A bright editorial photo of a compact electric bike in a modern city street\",\n \"size\": \"4:3\",\n \"n\": 1,\n \"output_format\": \"png\"\n }\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.poyo.ai/api/generate/submit")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"flux-schnell\",\n \"callback_url\": \"https://your-domain.com/callback\",\n \"input\": {\n \"prompt\": \"A bright editorial photo of a compact electric bike in a modern city street\",\n \"size\": \"4:3\",\n \"n\": 1,\n \"output_format\": \"png\"\n }\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.poyo.ai/api/generate/submit")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"model\": \"flux-schnell\",\n \"callback_url\": \"https://your-domain.com/callback\",\n \"input\": {\n \"prompt\": \"A bright editorial photo of a compact electric bike in a modern city street\",\n \"size\": \"4:3\",\n \"n\": 1,\n \"output_format\": \"png\"\n }\n}"
response = http.request(request)
puts response.read_body{
"code": 200,
"data": {
"task_id": "task-unified-1757165031-uyujaw3d",
"status": "not_started",
"created_time": "2026-06-26T10:30:00"
}
}- After submission, a
task_idwill be returned. If you provided acallback_url, when the task status becomesfinishedorfailed, a POST request will be sent to thecallback_url. - Regardless of whether
callback_urlis provided, you can retrieve the response result through the unified Query Task Status endpoint.
Flux Schnell Image Generation
Generate images withflux-schnell from a prompt. Use input.size for output size, input.n for output image count, and input.output_format for the returned image format. Supported size values are 1:1, 1:1 HD, 4:3, 3:4, 16:9, and 9:16; 1:1 HD is the high-definition square option. Custom WIDTHxHEIGHT values such as 1024x1536 are also supported.
Billing is based on output image size and output image count.
Available Models
- flux-schnell - Fast text-to-image generation
Authorizations
All API endpoints require Bearer Token authentication
Get your API Key:
Visit the API Key Management Page to get your API Key
Add it to the request header:
Authorization: Bearer YOUR_API_KEY
Body
application/json
