Text to Text - AsyncAPI

cURL

curl -X POST 'https://gptproto.com/v1/messages/async' \
-H 'Authorization: YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-H 'Accept: text/event-stream' \
--data '{
    "stream": false,
    "model": "claude-haiku-4-5-20251001",
    "messages": [
        {
            "role":"user",
            "content": [{"type":"text","text": "你好"}]
        }
    ]
}'

Success

{
    "id": "f8b30625-e38d-4950-8e13-76b72cfcb965",
    "status": "pending",
    "type": "message_task"
}

Parameters

Core Parameters

Parameter	Type	Required	Default	Range	Description
stream	bool	✅	false	-
model	string	✅	-	-	Model ID used to generate the response
messages	array	✅	[{'role': 'user', 'content': 'Who are you?'}]	role list: user assistant system developer	Array of message objects for the conversation. Each message must have a role (user or assistant) and content.

Messages Array Structure

Each message object in the messages array should have the following structure:

Field	Type	Required	Description
role	string	✅	The role of the message. Can be: user, assistant, system, or developer
content	array	✅	The content of the message

Content Array Structure

Field	Type	Required	Example	Description
type	string	✅	text	The type of content
text	string	✅	Hello, who are you!	The text content when type is text