Text to Speech (AU)Our API routes for generating audio from text in the AU region.
Operational
Speech to Text (AU) Cartesia API routes for transcription in AU region
Operational
Speech to Text (US)Cartesia API routes for transcription in US region
Operational
Speech to Text (APAC)Cartesia API routes for transcription in APAC region
Operational
Voice CloningOur API routes for cloning voices.
Operational
Text to Speech (US)Our API routes for generating audio from text in the US region.
Operational
Text to Speech (APAC)Our API routes for generating audio from text in the APAC region.
Operational
Speech to Text (EU)Cartesia API routes for transcription in EU region
Operational
PlaygroundOur web portal for experimenting with our API.
Operational
Text to Speech (EU)Our API routes for generating audio from text in the EU region.
Operational
Incidents25
History 25
Minor
Intermittent issues with voice cloning in APAC
Started
Thu, Sep 3, 2026, 10:34:11 PM
Updated
Fri, Sep 4, 2026, 07:37:58 PM
Resolved
Fri, Sep 4, 2026, 07:37:58 PM
Duration
21h 3m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
investigating
We are investigating the issue.
Minor
Intermittent websocket connection throttling
Started
Thu, Sep 3, 2026, 09:08:16 AM
Updated
Thu, Sep 3, 2026, 12:57:26 PM
Resolved
Thu, Sep 3, 2026, 12:57:26 PM
Duration
3h 49m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
investigating
We are investigating the issue.
investigating
We are investigating the issue.
Minor
Elevated connection errors in US regions
Started
Tue, Sep 1, 2026, 08:00:50 PM
Updated
Wed, Sep 2, 2026, 12:55:30 AM
Resolved
Tue, Sep 1, 2026, 08:04:06 PM
Duration
3m
resolved
We have identified the root cause as upstream provider cluster maintenance that affected our service ingress. Some clients experienced connection errors, but subsequent retries were successful.
resolved
We have mitigated the issue and continuing the root cause investigation.
investigating
We are investigating some connection errors in US region.
Minor
Elevated server-side TTFA for sonic-3.5 and sonic-3 in EU + US region
Started
Fri, Aug 21, 2026, 12:06:03 PM
Updated
Fri, Aug 21, 2026, 01:33:39 PM
Resolved
Fri, Aug 21, 2026, 01:33:39 PM
Duration
1h 27m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
investigating
We are investigating the issue.
Minor
TTS language region validation fails requests
Started
Fri, Aug 14, 2026, 07:58:25 AM
Updated
Fri, Aug 14, 2026, 09:34:59 AM
Resolved
Fri, Aug 14, 2026, 09:34:59 AM
Duration
1h 36m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
identified
The change has been rollbacked in APAC.
identified
A change rejects unknown TTS language regions, e.g. `hi-in` is rejected since an ISO 3166-1 alpha-2 country code is expected. We are working on rolling back this change. To correct the issue immediately, avoid sending the country code or send a corrected country code such as `hi-IN`.
Minor
Issues with files
Started
Fri, Aug 14, 2026, 06:24:04 AM
Updated
Fri, Aug 14, 2026, 07:30:51 AM
Resolved
Fri, Aug 14, 2026, 07:30:51 AM
Duration
1h 6m
resolved
This incident has been resolved.
identified
Impacts voice agent background sounds and TTS history.
Minor
Elevated File Download Errors on TTS generations
Started
Thu, Aug 13, 2026, 09:25:50 AM
Updated
Thu, Aug 13, 2026, 11:04:22 AM
Resolved
Thu, Aug 13, 2026, 10:46:47 AM
Duration
1h 20m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
resolved
This incident has been resolved.
investigating
We are continuing to investigate the issue.
investigating
We are investigating the issue.
investigating
We're experiencing an elevated level of errors downloading files and are currently looking into the issue.
Major
Agents Telephony failing in the US
Started
Fri, Aug 7, 2026, 03:48:26 PM
Updated
Fri, Aug 7, 2026, 03:49:34 PM
Resolved
Fri, Aug 7, 2026, 03:20:00 PM
Duration
—
resolved
This incident has been resolved. We apologize for the inconvenience and will provide further details once we've concluded our internal investigation.
investigating
We are investigating the issue.
Major
Intermittent timeouts on TTS endpoints
Started
Wed, Aug 5, 2026, 09:25:47 PM
Updated
Wed, Aug 5, 2026, 11:21:51 PM
Resolved
Wed, Aug 5, 2026, 11:21:51 PM
Duration
1h 56m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
identified
Rerouting traffic
investigating
We have identified some network issues and are attempting to mitigate the issue.
investigating
We are investigating the issue.
investigating
We are investigating the issue.
Major
Intermittent PVC training errors
Started
Wed, Aug 5, 2026, 12:47:50 AM
Updated
Wed, Aug 5, 2026, 01:41:32 AM
Resolved
Wed, Aug 5, 2026, 01:41:32 AM
Duration
53m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
identified
We are investigating the issue.
Major
Elevated errors across the Cartesia API
Started
Sat, Aug 1, 2026, 01:40:25 AM
Updated
Tue, Aug 4, 2026, 12:48:39 AM
Resolved
Sat, Aug 1, 2026, 02:31:43 AM
Duration
51m
resolved
This issue should be resolved now. We'll follow up with an RCA, but please reach out if you continue to see unexpected errors.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
identified
We have failed over to a backup provider and we're seeing recovery across the API.
investigating
We are investigating the issue.
Major
Autoscaling performance investigation
Started
Thu, Jul 30, 2026, 09:03:53 PM
Updated
Tue, Aug 4, 2026, 12:47:27 AM
Resolved
Fri, Jul 31, 2026, 03:31:00 AM
Duration
6h 27m
resolved
We've mitigated this issue and customers should no longer see any degraded performance.
investigating
We’re investigating an issue affecting autoscaling performance. Services remain available, though some customers may experience temporary degradation in quality. Our team is actively working to identify and mitigate the issue, and we’ll provide updates as they become available.
We've also identified partial failures for some voice cloning requests and mitigated the issue.
investigating
We’re investigating an issue affecting autoscaling performance. Services remain available, though some customers may experience temporary degradation in quality. Our team is actively working to identify and mitigate the issue, and we’ll provide updates as they become available.
Major
Partial TTS Outage in the US
Started
Wed, Jul 29, 2026, 10:17:52 PM
Updated
Thu, Jul 30, 2026, 10:25:11 PM
Resolved
Wed, Jul 29, 2026, 10:39:34 PM
Duration
21m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
investigating
We are investigating an outage with our underlying infrastructure provider that impacted TTS traffic in the US.
Major
Agent deployments via CLI are failing
Started
Wed, Jul 22, 2026, 11:43:06 PM
Updated
Thu, Jul 23, 2026, 12:45:08 AM
Resolved
Thu, Jul 23, 2026, 12:45:08 AM
Duration
1h 2m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
identified
Issue initiating new agent deployments via the CLI has been identified and a fix is being implemented. Calls are not impacted.
Major
Users are unable to login to the playground
Started
Tue, Jul 21, 2026, 04:03:12 PM
Updated
Tue, Jul 21, 2026, 05:27:55 PM
Resolved
Tue, Jul 21, 2026, 05:27:55 PM
Duration
1h 24m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
investigating
We are investigating the issue.
Minor
Sonic Latest Unavailable in EU region
Started
Mon, Jul 20, 2026, 05:51:35 PM
Updated
Mon, Jul 20, 2026, 06:09:25 PM
Resolved
Mon, Jul 20, 2026, 06:09:25 PM
Duration
17m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
investigating
We are investigating the issue.
Critical
Database read timeouts
Started
Fri, Jul 17, 2026, 08:13:11 PM
Updated
Fri, Jul 17, 2026, 08:36:35 PM
Resolved
Fri, Jul 17, 2026, 08:36:35 PM
Duration
23m
resolved
This incident has been resolved.
monitoring
We have mitigated the issue on our end and are continuing to monitor the state of our service.
investigating
We are investigating the issue and what components are affected.
None
API Server Down
Started
Fri, Jul 10, 2026, 05:15:43 PM
Updated
Mon, Jul 13, 2026, 11:09:43 PM
Resolved
Thu, Jul 25, 2024, 01:30:00 PM
Duration
—
resolved
Cartesia server was down for ~8-10 minutes
Major
Playground Down
Started
Fri, Jul 10, 2026, 05:15:43 PM
Updated
Mon, Jul 13, 2026, 11:09:43 PM
Resolved
Wed, Jul 24, 2024, 09:22:58 PM
Duration
—
resolved
Incident's been resolved.
monitoring
Fix has been deployed, validated on a few test accounts and waiting for user feedback.
identified
The Playground is currently down for a subsection of users. We've identified the issue and are rolling back the change.
None
This is an example incident
Started
Fri, Jul 10, 2026, 05:15:44 PM
Updated
Mon, Jul 13, 2026, 11:09:43 PM
Resolved
Wed, Jul 17, 2024, 05:43:09 PM
Duration
—
investigating
When your product or service isn’t functioning as expected, let your customers know by creating an incident. Communicate early, even if you don’t know exactly what’s going on.
resolved
Empathize with those affected and let them know everything is operating as normal.
identified
As you continue to work through the incident, update your customers frequently.
monitoring
Let your users know once a fix is in place, and keep communication clear and precise.
Critical
API Server Down
Started
Fri, Jul 10, 2026, 05:15:42 PM
Updated
Mon, Jul 13, 2026, 11:09:42 PM
Resolved
Wed, Aug 14, 2024, 10:08:29 PM
Duration
—
resolved
Root cause identified and full fix deployed to production. Post mortem to be shared out soon.
monitoring
Stop-gap was deployed at 3:39. API is up, monitoring while root causing.
monitoring
We had a major outage from 1:35-3:36
monitoring
We have deployed a temporary remediation and are currently monitoring the API.
investigating
An outage has recurred and we are actively resolving the issue.
monitoring
A fix has been implemented and we are monitoring the results.
investigating
Deployed a stop-gap to resolve outage. Still root causing the issue.
investigating
We are continuing to investigate this issue.
investigating
We are currently investigating an API outage.
None
Corrupt Worker
Started
Fri, Jul 10, 2026, 05:15:43 PM
Updated
Mon, Jul 13, 2026, 11:09:42 PM
Resolved
Tue, Aug 13, 2024, 06:30:00 PM
Duration
—
resolved
One of our workers was corrupted for 20-30 minutes, so a small increase in voice generation issues there.
Critical
Production API Outage
Started
Fri, Jul 10, 2026, 05:15:43 PM
Updated
Mon, Jul 13, 2026, 11:09:42 PM
Resolved
Fri, Aug 9, 2024, 11:38:35 PM
Duration
—
resolved
Root cause was identified. Solution has been working for the last ~4-5 hours so marking this as resolved.
monitoring
A stop-gap has been implemented, still root causing.
investigating
Production API has gone down
Critical
Vercel Outage
Started
Fri, Jul 10, 2026, 05:15:43 PM
Updated
Mon, Jul 13, 2026, 11:09:42 PM
Resolved
Wed, Aug 7, 2024, 07:54:35 PM
Duration
—
resolved
This incident has been resolved.
monitoring
Will monitor until Vercel is back up
None
Voice Cloning Issues
Started
Fri, Jul 10, 2026, 05:15:43 PM
Updated
Mon, Jul 13, 2026, 11:09:42 PM
Resolved
Thu, Jul 25, 2024, 01:48:03 PM
Duration
—
resolved
Confirmed the deployed fix works as intended. Reported user issues have been resolved.
monitoring
A fix has been deployed, tests in production look good waiting for user feedback.
investigating
A recent deploy has caused some users to report issues with voice cloning. We are currently investigating