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POST
/
v1
/
chat
/
completions
Text to Video （9:16）
curl --request POST \
  --url https://gptproto.com/v1/chat/completions \
  --header 'Authorization: <authorization>'
{
  "error": {
    "message": "Invalid signature",
    "type": "401"
  }
}

​
Overview

This endpoint provides text to video （9:16） functionality.

​
Authentication

This endpoint requires authentication using a Bearer token.
​
Authorization
string
default:"sk-***********"
required
Your API key in the format: YOUR_API_KEY

​
Request Example

curl --location --request POST 'https://gptproto.com/v1/chat/completions' \
--header 'Authorization: sk-xxxx' \
--header 'Content-Type: application/json' \
--data-raw '{
    //veo3.1-pro
    //Add "upsample" to the text parameter to enable high-resolution video
    "model": "veo3.1",
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "A beautiful woman is dancing in a European and American style. upsample aspect_ratio 16:9"
                },
                {
                    "type": "image_url",
                    "image_url": {
                        "url": "https://heyoo.oss-ap-southeast-1.aliyuncs.com/20251017_170918_yyy1.jpeg"
                    }
                },
                {
                    "type": "image_url",
                    "image_url": {
                        "url": "https://heyoo.oss-ap-southeast-1.aliyuncs.com/20251017_170932_yyy2.jpeg"
                    }
                }
            ]
        }
    ],
    "stream": true
}'

​
Response

​
Success
200
Successful response
{
  "status": "success"
}

​
Error Responses

{
  "error": {
    "message": "Invalid signature",
    "type": "401"
  }
}