Explanation
OpenAI 401: Invalid or missing API key
Authentication failed before the request reached the model.
API Error Explainer
Understand LLM API errors in seconds.
Select a provider and error code, paste the optional message, then get likely causes, first checks, fixes, retry guidance, and a suggested cURL test.
FAQ
How to use this safely
Can LLMPing tell me if an LLM provider is down?
LLMPing can point you to official provider status pages and explain whether an error looks provider-side, account-related, request-related, or runtime-related. The MVP does not claim live monitoring.
Should I paste API keys into the error explainer?
No. Paste only the HTTP status, provider error code, SDK message, or stack trace after removing secrets. LLMPing does not need your API key to explain common errors.
Why does runtime matter for LLM API errors?
The same provider error can mean different things in a browser, Vercel function, Cloudflare Worker, Python script, or local cURL command. Browser CORS and serverless timeouts often look like provider failures until isolated.
Need alerts, not just explanations?
Join the early access list for server-side LLM API monitoring.
Tell us which provider and failure mode you want monitored first.