OpenAI-Compatible API

The gateway implements the OpenAI Chat Completions / Embeddings protocol. Switch base_url and you're done.

Python

from openai import OpenAI
client = OpenAI(     api_key="cpk_xxx",     base_url="https://api.codepus.ai/v1", )
resp = client.chat.completions.create(     model="gpt-4o-mini",     messages=[{"role": "user", "content": "hello"}], ) print(resp.choices[0].message.content)

Node.js

import OpenAI from "openai";
const client = new OpenAI({   apiKey: "cpk_xxx",   baseURL: "https://api.codepus.ai/v1", });

Supported fields

✅ messages, model, temperature, top_p, max_tokens

✅ stream (SSE)

✅ tools / tool_calls

✅ response_format (json_object / json_schema)

⚠️ Some fields are model-dependent

Routing

Use model: "auto" to let the gateway pick; or specify a concrete model. See Custom Base URL.