Error codes
Collected API error JSON samples; user-facing steps live in “Common errors”.
json
{"error":{"message":"Invalid token","code":401}}
{"error":{"message":"Insufficient quota"}}
{"error":{"message":"model not found or not available for this token group"}}
{"error":{"message":"Rate limit exceeded"}}
{"type":"error","error":{"type":"invalid_request_error","message":"max_tokens: required"}}