Free LLM Gateway

import requests

response = requests.post(
    "https://openrouter.ai/api/v1/chat/completions",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json"
    },
    json={
        "model": "nvidia/nemotron-3-ultra-550b-a55b:free",
        "messages": [{"role": "user", "content": "Hello!"}]
    }
)
print(response.json()["choices"][0]["message"]["content"])

const res = await fetch("https://openrouter.ai/api/v1/chat/completions", {
    method: "POST",
    headers: {
        "Authorization": `Bearer YOUR_API_KEY`,
        "Content-Type": "application/json"
    },
    body: JSON.stringify({
        model: "nvidia/nemotron-3-ultra-550b-a55b:free",
        messages: [{role: "user", content: "Hello!"}]
    })
});
const data = await res.json();
console.log(data.choices[0].message.content);

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nvidia/nemotron-3-ultra-550b-a55b:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

from openai import OpenAI

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
    model="nvidia/nemotron-3-ultra-550b-a55b:free",
    messages=[{"role": "user", "content": "Hello!"}],
    stream=True
)

for chunk in response:
    if chunk.choices[0].delta.content:
        print(chunk.choices[0].delta.content, end="")