OpenAI API
OpenAI API — free tier with API key
OpenAI API exposes a free-tier JSON API. Register for an API key if required; we verified a public or demo endpoint.
GET https://api.openai.com/v1/responses
{
"error": {
"message": "Missing bearer or basic authentication in header",
"type": "invalid_request_error",
"param": null,
"code": null
}
}curl "https://api.openai.com/v1/responses"const res = await fetch("https://api.openai.com/v1/responses");
const data = await res.json();
console.log(data);import requests
res = requests.get("https://api.openai.com/v1/responses")
print(res.json())THIS API IS DEAD — NOTHING TO RUN
/v1/responsesPROBEDOpenAI API — free tier with API key
/v1V1 — documented GET route.
/v1/1V1 details by ID (example: 1).
/v1?limit=10V1 — documented GET route.
/v1/search?q=testSearch by query parameters.
/v1/V1 — documented GET route.
We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.
Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.
OpenAI API: common questions
Is OpenAI API free to use?
Yes — OpenAI API is a free science & space API. Free tier: Free tier — API key required. Whether the free tier allows commercial use is unclear — check the provider docs.
Does OpenAI API need an API key?
Yes — OpenAI API needs a free API key, which you pass on each request. Rate limits: Retry-After: 109s.
Can I call OpenAI API from the browser?
Yes — OpenAI API returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.
Is OpenAI API up right now?
As of our last scheduled check, OpenAI API is dead. We re-probe it every sweep — the status badge and uptime chart above always show the latest.