Claude API overloaded_error (529)
Is there an outage right now?
Claude API official status is operational. If this error persists, it is likely an implementation or environment issue on your side.
View Claude API status →What this error means
Anthropic is temporarily overloaded (HTTP 529). Returned during demand spikes; usually transient.
Common causes
- •Anthropic-wide demand spike
- •Model capacity pressure
- •Surge right after a new model launch
How to fix
- 1.Retry with exponential backoff + jitter
- 2.Spread out / throttle requests
- 3.Temporarily fall back to another model
- 4.Check status at top of page and official status
When waiting helps (and when it won't)
Usually recovers over time. Avoid hammering—space out retries.
Alternatives when Claude API is down
Related errors
FAQ
What is overloaded_error (529)?
Anthropic is temporarily overloaded (HTTP 529). Returned during demand spikes; usually transient.
How do I fix overloaded_error (529)?
Retry with exponential backoff + jitter / Spread out / throttle requests / Temporarily fall back to another model / Check status at top of page and official status