Chat / Text

OpenAI Protocol (GPT)

OpenAI Chat Completions / Responses compatible. For GPT, plus DeepSeek, GLM, MiMo, etc.

Endpoints

Usage	Method	Path
Chat (REST + SSE)	POST	/v1/chat/completions
Codex (Responses)	POST	/v1/responses
Model list	GET	/v1/models

Authentication

Authorization: Bearer <API_KEY>
Content-Type: application/json

Supported Models

gpt-* (e.g. gpt-4o), deepseek-*, ZHIPU/GLM-*, xiaomi/mimo-*, etc. See GET /v1/models.

Request Parameters

Param	Type	Required	Description
model	string	Required	Model, e.g. gpt-4o
messages	array	Required	Messages (role/content)
stream	boolean	—	true for SSE; add stream_options.include_usage=true to get usage
temperature / top_p	number	—	Sampling controls
max_tokens / max_completion_tokens	integer	—	Max output
tools / tool_choice	—	—	Tool calling

Streaming (SSE)

Set "stream": true and "stream_options": {"include_usage": true}; receive SSE with curl -N. Events data: {chunk}, ends with data: [DONE]; usage in the final chunk.

Request Example

Non-streaming

curl -X POST "https://api.cqtai.com/v1/chat/completions" \
  -H "Authorization: Bearer <API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4o",
    "messages": [{"role":"user","content":"你好，介绍一下你自己"}]
  }'

Streaming (SSE with usage)

curl -N -X POST "https://api.cqtai.com/v1/chat/completions" \
  -H "Authorization: Bearer <API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4o",
    "stream": true,
    "stream_options": {"include_usage": true},
    "messages": [{"role":"user","content":"写一首关于夏天的短诗"}]
  }'

Response Example

{
  "id": "chatcmpl-xxx",
  "object": "chat.completion",
  "model": "gpt-4o",
  "choices": [
    { "index": 0, "message": { "role": "assistant", "content": "你好！……" }, "finish_reason": "stop" }
  ],
  "usage": { "prompt_tokens": 9, "completion_tokens": 12, "total_tokens": 21 }
}

Billing & Credits

Billed per token: input × input price + output × output price (cache write ×1.25, cache read ×0.1), then × your rate. count_tokens is free. See the Intro page for model prices.