Chat Completions API

Radium implements the standard OpenAI Chat Completions API at POST /v1/chat/completions. Existing code, prompts and middleware work without changes.

Endpoint

POST https://api.radium.cloud/v1/chat/completions

Request format

curl -X POST https://api.radium.cloud/v1/chat/completions \\
  -H "Authorization: Bearer $RADIUM_API_KEY" \\
  -H "Content-Type: application/json" \\
  -d '{
    "model": "clarke-1.0",
    "messages": [
      {"role": "system", "content": "You are a helpful assistant."},
      {"role": "user", "content": "Hello"}
    ]
  }'

from openai import OpenAI
client = OpenAI(api_key="YOUR_RADIUM_API_KEY", base_url="https://api.radium.cloud/v1")
response = client.chat.completions.create(
    model="clarke-1.0",
    messages=[
        {"role": "system", "content": "You are a helpful assistant."},
        {"role": "user", "content": "Hello"},
    ],
)
print(response.choices[0].message.content)

import OpenAI from "openai";
const client = new OpenAI({ apiKey: process.env.RADIUM_API_KEY, baseURL: "https://api.radium.cloud/v1" });
const response = await client.chat.completions.create({
  model: "clarke-1.0",
  messages: [
    { role: "system", content: "You are a helpful assistant." },
    { role: "user", content: "Hello" },
  ],
});
console.log(response.choices[0].message.content);

Response format

{
  "id": "chatcmpl-abc123",
  "object": "chat.completion",
  "created": 1699999999,
  "model": "clarke-1.0",
  "choices": [{
    "index": 0,
    "message": {
      "role": "assistant",
      "content": "Hello! How can I help you today?"
    },
    "finish_reason": "stop"
  }],
  "usage": {
    "prompt_tokens": 19,
    "completion_tokens": 9,
    "total_tokens": 28
  }
}

Limitations

Some advanced parameters may behave differently from OpenAI. See From OpenAI for the full parameter compatibility table.