> ## Documentation Index
> Fetch the complete documentation index at: https://docs.yingtu.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Errors & Retries

> Classify errors and retry asynchronous requests safely.

Retry `429` and transient `5xx` responses with bounded exponential backoff and
jitter. Do not automatically retry validation or authentication errors.

<Info>
  A request timeout before a `task_id` is returned is ambiguous. Avoid blind
  repeated submissions because they may create duplicate billable tasks.
</Info>