On HTTP 429 from the Anthropic API, you should:
ARetry immediately, indefinitely
BSwitch to a different model permanently
CWait with exponential backoff + jitter
DCancel the request and alert the user
Answer & Solution
Correct answer: C. Wait with exponential backoff + jitter
429 = rate limit.
**Best practice:** exponential backoff (1s, 2s, 4s...) with random jitter to avoid thundering-herd retries.
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