Errors

Errors come back as JSON with an error object:

{
  "error": {
    "message": "…",
    "type": "…",
    "code": "…"
  }
}

Status	Meaning
`400`	Invalid request parameters
`401`	API key missing or invalid
`404`	Path does not exist, usually a typo in the URL
`429`	Rate limit exceeded
`500`	Internal server error
`503`	No upstream is currently available for this model, or the model name does not exist. Retry later or switch models

The wording of error.message can change. Handle errors by HTTP status code rather than matching the message text.