Cartesia experienced a notice incident on December 18, 2025 affecting Text to Speech (US), lasting 22m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified Dec 18, 2025, 07:48 PM UTC
A faulty deploy temporarily took down our TTS on the US cluster. Traffic rerouted to backup clusters and auto rollback for US fired but there was a spike in 503 errors briefly. Looking into confirming this has been resolved
- monitoring Dec 18, 2025, 07:49 PM UTC
Healthchecks indicate this is currently working as intended, will continue to monitor for a bit before closing
- resolved Dec 18, 2025, 08:10 PM UTC
Confirmed there are no longer any issues. Users likely saw a brief spike in 503s, and then elevated TTFAs (backup cluster) for a few minutes, entire incident would have resolved in a few minutes. Will have an RCA shortly
- postmortem Dec 18, 2025, 08:10 PM UTC
We had a faulty deploy to the US cluster that would have resulted in a brief spike in 503s. Newer traffic was rerouted to our backup cluster \(EU\) while rollback initiated in the US which took a minute\*.