Documentation Index
Fetch the complete documentation index at: /docs/llms.txt
Use this file to discover all available pages before exploring further.
OpenAI-compatible Responses API
store: true or a non-null previous_response_id are rejected with a 400 error.https://openrouter.ai/api/v1/responses
const response = await fetch('https://openrouter.ai/api/v1/responses', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_OPENROUTER_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
model: 'openai/o4-mini',
input: 'Hello, world!',
}),
});
import requests
response = requests.post(
'https://openrouter.ai/api/v1/responses',
headers={
'Authorization': 'Bearer YOUR_OPENROUTER_API_KEY',
'Content-Type': 'application/json',
},
json={
'model': 'openai/o4-mini',
'input': 'Hello, world!',
}
)
curl -X POST https://openrouter.ai/api/v1/responses \
-H "Authorization: Bearer YOUR_OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/o4-mini",
"input": "Hello, world!"
}'
{
"error": {
"code": "invalid_prompt",
"message": "Missing required parameter: 'model'."
},
"metadata": null
}
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