POST /v1/chat/completions

Parameters

Parameter	Type	Required	Description
`model`	string	yes	Model ID from the catalog
`messages`	array	yes	Conversation messages, OpenAI format
`max_tokens`	integer	no	Max output tokens
`temperature`	number	no	Sampling temperature 0-2
`stream`	boolean	no	Stream the response

Request

curl https://api.onefast.ai/v1/chat/completions 
  -H "Content-Type: application/json" 
  -H "Authorization: Bearer sk-your-api-key" 
  -d '{
    "model": "gpt-4o",
    "messages": [{"role": "user", "content": "Hello"}],
    "max_tokens": 100
  }'

Response

{
  "id": "chatcmpl-xxx",
  "object": "chat.completion",
  "model": "gpt-4o",
  "choices": [{ "index": 0, "message": { "role": "assistant", "content": "Hi there!" } }],
  "usage": { "prompt_tokens": 5, "completion_tokens": 20, "total_tokens": 25 }
}