Error handling

HTTP status codes, rate limits, and retries

Status	Meaning and action
400	Invalid parameters. Correct the request using the response message.
401	The API key is missing, malformed, or no longer valid.
403	Insufficient balance or permissions. Check the account balance, key status, and model access.
429	An upstream limit, risk control, or retry loop was triggered. Use message to identify RPM, RPD, TPM, TPD, IPM, or IPD.
500	Unknown service error. Record the time and error details, then contact support.
503/504	High load or upstream timeout. Retry later with exponential backoff; streaming may help conversational requests.

The platform does not impose a fixed rate limit by default, but upstream services, risk controls, and repeated failures can still return 429.

If the issue persists, visit Contact us for technical support and include the request time, endpoint, model ID, HTTP status, and complete message. Never send your full API key.