Veo-3.1-Generate-Preview API
curl --request POST \
--url https://api.evolink.ai/v1/videos/generations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "veo-3.1-generate-preview",
"prompt": "A cat playing piano"
}
'import requests
url = "https://api.evolink.ai/v1/videos/generations"
payload = {
"model": "veo-3.1-generate-preview",
"prompt": "A cat playing piano"
}
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: 'veo-3.1-generate-preview', prompt: 'A cat playing piano'})
};
fetch('https://api.evolink.ai/v1/videos/generations', 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.evolink.ai/v1/videos/generations",
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' => 'veo-3.1-generate-preview',
'prompt' => 'A cat playing piano'
]),
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.evolink.ai/v1/videos/generations"
payload := strings.NewReader("{\n \"model\": \"veo-3.1-generate-preview\",\n \"prompt\": \"A cat playing piano\"\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.evolink.ai/v1/videos/generations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"veo-3.1-generate-preview\",\n \"prompt\": \"A cat playing piano\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.evolink.ai/v1/videos/generations")
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\": \"veo-3.1-generate-preview\",\n \"prompt\": \"A cat playing piano\"\n}"
response = http.request(request)
puts response.read_body{
"created": 1757169743,
"id": "task-unified-1757169743-7cvnl5zw",
"model": "veo-3.1-generate-preview",
"status": "pending"
}{
"error": {
"code": "invalid_request",
"message": "Invalid request parameters",
"type": "invalid_request_error"
}
}{
"error": {
"code": "unauthorized",
"message": "Invalid or expired token",
"type": "authentication_error"
}
}{
"error": {
"code": "insufficient_quota",
"message": "Insufficient quota. Please top up your account.",
"type": "insufficient_quota"
}
}{
"error": {
"code": "model_access_denied",
"message": "Token does not have access to model: veo-3.1-generate-preview",
"type": "invalid_request_error"
}
}{
"error": {
"code": "rate_limit_exceeded",
"message": "Too many requests, please try again later",
"type": "rate_limit_error"
}
}{
"error": {
"code": "internal_error",
"message": "Internal server error",
"type": "api_error"
}
}Veo3.1
Veo3.1-Pro Video Generation
- Veo 3.1 Generate Preview supports text-to-video, first-frame image-to-video and more
- Async processing, use returned task ID to query status
- Generated video links are valid for 24 hours
POST
/
v1
/
videos
/
generations
Veo-3.1-Generate-Preview API
curl --request POST \
--url https://api.evolink.ai/v1/videos/generations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "veo-3.1-generate-preview",
"prompt": "A cat playing piano"
}
'import requests
url = "https://api.evolink.ai/v1/videos/generations"
payload = {
"model": "veo-3.1-generate-preview",
"prompt": "A cat playing piano"
}
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: 'veo-3.1-generate-preview', prompt: 'A cat playing piano'})
};
fetch('https://api.evolink.ai/v1/videos/generations', 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.evolink.ai/v1/videos/generations",
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' => 'veo-3.1-generate-preview',
'prompt' => 'A cat playing piano'
]),
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.evolink.ai/v1/videos/generations"
payload := strings.NewReader("{\n \"model\": \"veo-3.1-generate-preview\",\n \"prompt\": \"A cat playing piano\"\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.evolink.ai/v1/videos/generations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"veo-3.1-generate-preview\",\n \"prompt\": \"A cat playing piano\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.evolink.ai/v1/videos/generations")
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\": \"veo-3.1-generate-preview\",\n \"prompt\": \"A cat playing piano\"\n}"
response = http.request(request)
puts response.read_body{
"created": 1757169743,
"id": "task-unified-1757169743-7cvnl5zw",
"model": "veo-3.1-generate-preview",
"status": "pending"
}{
"error": {
"code": "invalid_request",
"message": "Invalid request parameters",
"type": "invalid_request_error"
}
}{
"error": {
"code": "unauthorized",
"message": "Invalid or expired token",
"type": "authentication_error"
}
}{
"error": {
"code": "insufficient_quota",
"message": "Insufficient quota. Please top up your account.",
"type": "insufficient_quota"
}
}{
"error": {
"code": "model_access_denied",
"message": "Token does not have access to model: veo-3.1-generate-preview",
"type": "invalid_request_error"
}
}{
"error": {
"code": "rate_limit_exceeded",
"message": "Too many requests, please try again later",
"type": "rate_limit_error"
}
}{
"error": {
"code": "internal_error",
"message": "Internal server error",
"type": "api_error"
}
}Authorizations
##All APIs require Bearer Token authentication##
Get API Key:
Visit API Key Management Page to get your API Key
Add to request header:
Authorization: Bearer YOUR_API_KEY
Body
application/json
Prompt, max 2000 tokens
Maximum string length:
2000Reference images, max 3, max 10MB each
Maximum array length:
3Mode:
TEXT: Text-to-videoFIRST&LAST: First-last frame, 1-2 imagesREFERENCE: Reference image, max 3 images, duration fixed at 8s, aspect ratio fixed at 16:9, exceptgenerate_audio, other advanced params not supported
Available options:
TEXT, FIRST&LAST, REFERENCE Video aspect ratio. When set to auto: image-to-video will automatically select based on the input image ratio, text-to-video will automatically select based on the prompt content
Available options:
auto, 16:9, 9:16 Generate audio (extra cost), default true
Duration (seconds), default 4
Available options:
4, 6, 8 Number of videos, default 1
Required range:
1 <= x <= 4Resolution, default 720p
Available options:
720p, 1080p, 4k Required range:
1 <= x <= 4294967295Person generation control, default allow_adult. allow_adult: allow adults only; dont_allow: no people/faces
Available options:
allow_adult, dont_allow Resize mode (I2V only), default pad
Available options:
pad, crop