Quickstart

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import OpenAI from 'openai';
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const openai = new OpenAI({
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  baseURL: 'https://openrouter.ai/api/v1',
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  apiKey: '<OPENROUTER_API_KEY>',
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  defaultHeaders: {
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    'HTTP-Referer': '<YOUR_SITE_URL>', // Optional. Site URL for rankings on openrouter.ai.
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    'X-Title': '<YOUR_SITE_NAME>', // Optional. Site title for rankings on openrouter.ai.
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  },
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});
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async function main() {
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  const completion = await openai.chat.completions.create({
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    model: 'openai/gpt-4o',
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    messages: [
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      {
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        role: 'user',
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        content: 'What is the meaning of life?',
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      },
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    ],
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  });
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  console.log(completion.choices[0].message);
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}
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main();

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fetch('https://openrouter.ai/api/v1/chat/completions', {
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  method: 'POST',
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  headers: {
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    Authorization: 'Bearer <OPENROUTER_API_KEY>',
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    'HTTP-Referer': '<YOUR_SITE_URL>', // Optional. Site URL for rankings on openrouter.ai.
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    'X-Title': '<YOUR_SITE_NAME>', // Optional. Site title for rankings on openrouter.ai.
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    'Content-Type': 'application/json',
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  },
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  body: JSON.stringify({
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    model: 'openai/gpt-4o',
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    messages: [
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      {
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        role: 'user',
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        content: 'What is the meaning of life?',
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      },
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    ],
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  }),
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});