Elevated errors on Claude Opus 4.1
Investigating - We are investigating an issue with Claude Opus 4.1 similar to the one that happened earlier, this time starting with 4:14 PT / 11:14 UTC.
Aug 27, 2025 - 11:29 UTC
Uptime over the past 90 days. View historical uptime.
claude.ai Degraded Performance
90 days ago
99.13 % uptime
Today
console.anthropic.com Degraded Performance
90 days ago
99.49 % uptime
Today
api.anthropic.com Degraded Performance
90 days ago
99.42 % uptime
Today
Claude Code Degraded Performance
90 days ago
99.46 % uptime
Today
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Aug 27, 2025
Elevated errors on Claude Opus 4.1
Resolved - As of 00:46 PT / 7:46 UTC the errors are back to baseline.
Aug 27, 08:11 UTC
Investigating - We are investigating an issue with Claude Opus 4.1 that started at 23:08 PT / 6:08 UTC.
Aug 27, 06:23 UTC
Aug 26, 2025
Elevated errors on Claude Opus 4.0
Resolved - We have seen errors return to the baseline level since 7:45 PT / 14:45 UTC.
Aug 26, 15:03 UTC
Update - We are continuing to investigate this issue.
Aug 26, 13:53 UTC
Investigating - We are currently investigating this issue.
Aug 26, 13:52 UTC
Aug 25, 2025
Claude.ai failing to connect to certain MCP servers
Resolved - This incident has been resolved.
Aug 25, 20:39 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 25, 20:18 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 25, 20:14 UTC
Investigating - Claude.ai is failing to downgrade MCP connections to SSE for a limited number of MCP servers. We are currently investigating.
Aug 25, 19:02 UTC
Intermittent visibility issues with Google Docs in project knowledge base
Resolved - This incident has been resolved. We identified a regression and deployed/monitored a fix over the weekend.
Aug 25, 18:32 UTC
Investigating - We are currently investigating this issue.
Aug 22, 17:19 UTC
Aug 24, 2025
Elevated errors on Claude Sonnet 4
Resolved - This incident has been resolved.
Aug 24, 09:20 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 24, 08:19 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 24, 08:03 UTC
Investigating - We are currently investigating this issue.
Aug 24, 07:20 UTC
Aug 23, 2025
Errors creating chats on Claude.ai
Resolved - This incident has been resolved.
Aug 23, 01:45 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 23, 01:30 UTC
Investigating - We are currently investigating this issue.
Aug 23, 00:55 UTC
Elevated errors on Claude Opus 4 and 4.1
Resolved - This incident has been resolved.
Aug 23, 00:56 UTC
Update - We are continuing to investigate this issue.
Aug 22, 23:39 UTC
Investigating - Starting ~15:50 PT for Opus 4 and ~11:40 PT for Opus 4.1
Aug 22, 23:39 UTC
Aug 22, 2025
Errors starting new Claude.ai chats
Resolved - This incident has been resolved.
Aug 22, 22:59 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 22, 22:06 UTC
Elevated errors on Claude Opus 4
Resolved - This incident has been resolved.
Aug 22, 22:30 UTC
Update - We are continuing to investigate this issue.
Aug 22, 22:14 UTC
Update - We are continuing to investigate this issue.
Aug 22, 22:12 UTC
Update - We are continuing to investigate this issue.
Aug 22, 21:37 UTC
Investigating - We are currently investigating this issue.
Aug 22, 21:36 UTC
Elevated Errors on Haiku 3.5
Resolved - This incident has been resolved.
Aug 22, 15:59 UTC
Update - We are continuing to work on a fix for this issue.
Aug 22, 15:58 UTC
Update - We are continuing to work on a fix for this issue.
Aug 22, 14:57 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 22, 14:57 UTC
Aug 21, 2025
Elevated errors on Claude Sonnet 4
Resolved - This incident has been resolved.
Aug 21, 17:13 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 21, 15:36 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 21, 13:45 UTC
Investigating - We are currently investigating this issue.
Aug 21, 13:39 UTC
Elevated errors on Claude Opus 4.1
Resolved - This incident has been resolved.
Aug 21, 13:33 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 21, 13:25 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 21, 13:21 UTC
Investigating - We are currently investigating this issue.
Aug 21, 13:01 UTC
Aug 20, 2025
Elevated errors on Claude Sonnet 4
Resolved - This incident has been resolved.
Aug 20, 06:08 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 20, 03:43 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 20, 02:58 UTC
Aug 19, 2025
Team plan organizations unable to add more members
Resolved - We have resolved the underlying issue and Team plan organizations should now be able to add more members.
Aug 19, 18:01 UTC
Update - The fix will be rolled out in the next few hours. We will provide another update when it has been fully deployed.
Aug 19, 13:39 UTC
Identified - We have identified an issue that, since August 18, has caused Team plan organizations to be unable to add more members. We are working on a fix.
Aug 19, 12:35 UTC
Elevated errors on Claude Opus 4.1
Resolved - As of 7:50 PT / 14:50 UTC the errors are back to normal levels.
Aug 19, 15:24 UTC
Investigating - We are investigating an elevated error rate on Claude Opus 4.1 that started since 6:22 PT / 13:22 UTC.
Aug 19, 13:29 UTC
Subscription Upgrade Broken
Resolved - This incident has been resolved. Affected customers have had their rate limit increases and model access granted. We will be contacting affected customers directly with more information and to provide next steps.
Aug 19, 01:56 UTC
Identified - Starting August 15th, we have had problems with our upgrade flow. This was preventing upgraded accounts from getting their expected rate limit increases and expanded model access (Opus).

We have identified the underlying issue and are working on a mitigation for impacted accounts.
Aug 19, 00:01 UTC
Aug 18, 2025
Subscription Upgrade Broken
Resolved - This incident has been resolved.
Aug 18, 23:55 UTC
Identified - Starting August 15th, we have had problems with our upgrade flow. This was preventing upgraded accounts from getting their expected rate limit increases and expanded model access (Opus).

We have identified the underlying issue and are working on a mitigation for impacted accounts.
Aug 18, 20:30 UTC
Claude.ai chats not saved
Resolved - This incident has been resolved.
Aug 18, 19:31 UTC
Identified - The issue has been identified and a fix is being implemented.
Aug 18, 19:05 UTC
Investigating - We are currently investigating this issue.
Aug 18, 17:47 UTC
Elevated errors on Claude Sonnet 4
Resolved - This incident has been resolved.
Aug 18, 10:58 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 18, 07:59 UTC
Update - We are continuing to investigate this issue.
Aug 18, 07:59 UTC
Investigating - We are currently investigating this issue.
Aug 18, 07:49 UTC
Elevated errors on Claude Opus 4.1
Resolved - This incident has been resolved.
Aug 18, 07:48 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 18, 07:33 UTC
Investigating - We are currently investigating this issue.
Aug 18, 07:11 UTC
Aug 17, 2025

No incidents reported.

Aug 16, 2025

No incidents reported.

Aug 15, 2025

No incidents reported.

Aug 14, 2025
Elevated errors across models
Resolved - This incident has been resolved.
Aug 14, 14:51 UTC
Investigating - We are currently investigating an issue where we are seeing an elevated error rate across all models and products.
Aug 14, 13:45 UTC
Aug 13, 2025
Elevated errors on Claude Sonnet 3.6
Resolved - As of 1:10 PT / 9:10 UTC errors have returned to the baseline.
Aug 13, 08:50 UTC
Investigating - We are seeing an elevated amount of errors on Sonnet 3.6 since 22:30 PT / 6:30 UTC.
Aug 13, 07:12 UTC
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