siwaaphm/gpt-oss-20b

// Node.js / Browser
const res = await fetch('https://api.xah.io/v1/chat/completions', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    "model": "siwaaphm/gpt-oss-20b",
    "messages": [
        {
            "role": "user",
            "content": "Hola, ¿quién eres?"
        }
    ]
})
});
const data = await res.json();
console.log(data);

import requests

url = 'https://api.xah.io/v1/chat/completions'
headers = {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json',
}
payload = {
    "model": "siwaaphm/gpt-oss-20b",
    "messages": [
        {
            "role": "user",
            "content": "Hola, ¿quién eres?"
        }
    ]
}

res = requests.post(url, headers=headers, json=payload, timeout=120)
print(res.status_code, res.json())

{
    "model": "siwaaphm/gpt-oss-20b",
    "messages": [
        {
            "role": "user",
            "content": "Hola, ¿quién eres?"
        }
    ]
}