HTTP 404 Not Found

The requested resource does not exist at this URL.

4xx · Client error✗ not retryable — fix the request instead

In AI APIs specifically

Usually a typo'd endpoint path, a deprecated/retired model ID, or a v1 path used against a different API version.

Fix checklist

Diff your URL against the current API reference character by character.
Check the model deprecation page — retired model IDs return 404.
Verify path parameters (file IDs, job IDs) actually exist.

Spec: RFC reference

Related status codes

400 Bad Request

The server cannot process the request due to a client error — malformed JSON, invalid parameters, or schema violations..

401 Unauthorized

Authentication is missing or invalid for this request..

402 Payment Required

The request requires payment — billing is not set up or a balance is exhausted..

The server understood the request but refuses to authorize it — valid credentials, insufficient permission..

← All HTTP status codes