Incident History for Cartesia
A complete log of all past incidents, outages, and scheduled maintenance.
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applies to the 15 loadedManaged Agents with OpenAI LLMs degraded performance
Resolved
Affected Components
Resolved
on Oct 22, 2026
The incident affecting Managed Agents with OpenAI LLMs has been resolved.
Monitoring
on Oct 22, 2026
The upstream issue appears mitigated and we are continuing to monitor Managed Agents using OpenAI LLMs.
Investigating
on Oct 22, 2026
We are investigating degraded performance affecting Managed Agents using OpenAI LLMs and addressing it with the upstream provider.
Scheduled For
Oct 22, 2026, 3:13 AM UTC
Playground unavailable
Resolved
Affected Components
Resolved
on Oct 15, 2026
The Playground has been restored and is healthy; the disruption is resolved and API services were unaffected.
Identified
on Oct 15, 2026
The Playground is currently unavailable while the identified cause is being remediated; API services are unaffected.
Intermittent API and Playground Errors
Resolved
Affected Components
Resolved
on Oct 8, 2026
The intermittent API and Playground errors have been resolved.
Monitoring
on Oct 8, 2026
The intermittent connectivity issues have resolved; we are continuing to monitor the state of our service.
Investigating
on Oct 8, 2026
We are investigating intermittent errors affecting API and Playground operations, including access-token creation, voice browsing, and agent management.
Scheduled Maintenance on Playground Sign-In/Sign-Up
Completed
Affected Components
Completed
on Sep 22, 2026
Scheduled maintenance on Playground sign-in and sign-up has been completed.
Scheduled Maintenance on Playground Sign-In/Sign-Up
Under Maintenance
Affected Components
Under Maintenance
on Sep 22, 2026
Scheduled maintenance on Playground sign-in/sign-up is in progress; users may have issues generating TTS responses or calling agents.
Scheduled For
Sep 22, 2026, 1:00 AM UTC
Under Maintenance
on Sep 22, 2026
Scheduled maintenance on Playground sign-in and sign-up is currently in progress; updates will follow as necessary.
Scheduled For
Sep 22, 2026, 1:00 AM UTC
Completed
on Sep 22, 2026
Maintenance on Playground sign-in and sign-up flows has completed.
Scheduled For
Sep 22, 2026, 1:00 AM UTC
Under Maintenance
on Sep 22, 2026
Maintenance on Playground sign-in and sign-up flows has started and is in progress.
Scheduled For
Sep 22, 2026, 1:00 AM UTC
... and 1 more update(s). Click to view the full timeline.
Cluster maintenance in AP region
Completed
Affected Components
Completed
on Sep 19, 2026
Maintenance on Text to Speech and Speech to Text in the APAC region has completed and both components are operational.
Scheduled For
Sep 18, 2026, 6:30 PM UTC
Cluster maintenance in EU region
Completed
Affected Components
Completed
on Sep 19, 2026
Maintenance on Text to Speech and Speech to Text in the EU region has completed and both components are operational.
Scheduled For
Sep 18, 2026, 6:00 PM UTC
Under Maintenance
on Sep 18, 2026
Maintenance on Text to Speech and Speech to Text in the APAC region is currently in progress.
Scheduled For
Sep 18, 2026, 6:30 PM UTC
Under Maintenance
on Sep 18, 2026
Maintenance on Text to Speech and Speech to Text in the EU region is currently in progress.
Scheduled For
Sep 18, 2026, 6:00 PM UTC
Cluster maintenance in EU region
Scheduled
Affected Components
Scheduled
on Sep 10, 2026
Routine maintenance is scheduled for Cartesia's EU region systems, with brief intermittent disruptions possible.
Scheduled For
Sep 18, 2026, 6:00 PM UTC to Sep 19, 2026, 12:00 AM UTC
Scheduled
on Sep 10, 2026
Routine maintenance is scheduled for Cartesia's AP region systems, with brief intermittent disruptions possible.
Scheduled For
Sep 18, 2026, 6:30 PM UTC to Sep 19, 2026, 12:30 AM UTC
EU Cluster Maintenance Completed
Completed
Affected Components
Completed
on Sep 5, 2026
Maintenance for EU region clusters has completed, with TTS and STT services operational.
Scheduled For
Sep 5, 2026, 1:00 AM UTC
Completed
on Sep 5, 2026
Maintenance has completed for EU Text to Speech and Speech to Text services.
Scheduled For
Sep 5, 2026, 1:00 AM UTC
Under Maintenance
on Sep 5, 2026
Maintenance has started for EU Text to Speech and Speech to Text services.
Scheduled For
Sep 5, 2026, 1:00 AM UTC
Under Maintenance
on Sep 5, 2026
Maintenance has started for EU Text to Speech and Speech to Text services.
Scheduled For
Sep 5, 2026, 1:00 AM UTC
Intermittent issues with voice cloning in APAC
Resolved
Affected Components
Resolved
on Sep 4, 2026
The intermittent issues with voice cloning in APAC have been resolved.
Monitoring
on Sep 4, 2026
We have mitigated the issue and are monitoring the service.
Monitoring
on Sep 4, 2026
We have mitigated the issue and are monitoring the service.
Investigating
on Sep 3, 2026
We are investigating intermittent issues with voice cloning in APAC.
Intermittent websocket connection throttling
Resolved
Affected Components
Resolved
on Sep 3, 2026
The intermittent websocket connection throttling incident has been resolved.
Monitoring
on Sep 3, 2026
We have mitigated the issue on our end and are continuing to monitor the state of our service.
Investigating
on Sep 3, 2026
Investigating elevated server-side TTFA for all sonic models in APAC, affecting Text to Speech (APAC).
Elevated connection errors in US regions
Identified
Affected Components
Identified
on Sep 2, 2026
Root cause identified as upstream provider maintenance; clients experienced connection errors but retries succeeded.
Resolved
on Sep 1, 2026
The issue has been mitigated and is now resolved, with ongoing root cause investigation.
Investigating
on Sep 1, 2026
We are investigating connection errors in US regions affecting TTS and STT services.
EU Cluster Maintenance Scheduled
Scheduled
Affected Components
Scheduled
on Aug 28, 2026
Routine maintenance for EU region systems is scheduled for September 5, 2026, from 1:00 AM to 6:59 AM UTC, with possible brief disruptions.
Scheduled For
Sep 5, 2026, 1:00 AM UTC to Sep 5, 2026, 6:59 AM UTC
Scheduled
on Aug 28, 2026
Routine maintenance for EU region systems is scheduled for September 5, 2026, from 1:00 AM to 6:59 AM UTC, with possible brief disruptions.
Scheduled For
Sep 5, 2026, 1:00 AM UTC to Sep 5, 2026, 6:59 AM UTC
Degraded performance in sonic-3.5 and sonic-3
Resolved
Affected Components
Resolved
on Aug 21, 2026
The incident has been resolved and the service is operational.
Monitoring
on Aug 21, 2026
We have mitigated the issue and are monitoring the service.
Monitoring
on Aug 21, 2026
We have mitigated the issue and are monitoring the service.
Monitoring
on Aug 21, 2026
We have mitigated the issue and are monitoring the service.
... and 3 more update(s). Click to view the full timeline.
TTS language region validation fails requests
Resolved
Affected Components
Resolved
on Aug 14, 2026
This incident has been resolved and all TTS components are operational.
Monitoring
on Aug 14, 2026
We have mitigated the issue on our end and are continuing to monitor the state of our service.
Identified
on Aug 14, 2026
The change has been rollbacked in APAC, but US and EU TTS still experience degraded performance.
Identified
on Aug 14, 2026
A change rejects unknown TTS language regions, causing degraded performance. We are working on rolling back the change.