Anthropic Status

Investigating: We are currently investigating this issue.

Resolved: The following models have seen errors below the baseline:

• Claude 3.5 Sonnet since 16:20 UTC
• Claude 4 Sonnet since 15:39 UTC

We are resolving this incident.

Investigating: We've seen the following models have issues:

• Claude 3.5 Sonnet from 12:30 UTC
• Claude 3.7 Sonnet between 11:30 UTC and 14:45 UTC
• Claude 4 Sonnet from 14:30 UTC

We are working on mitigating the user impact.

Monitoring: We are observing an increase in error rates on multiple older models. A fix has been implemented and we are continuing to monitor.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating this issue.

Resolved: This incident has been resolved.

Identified: From 21:36–21:52, users were unable to access Claude.ai or the Anthropic Console. This issue has been resolved, but we are continuing to work to resolve an issue which is resulting in a low rate of errors for users of Claude.ai, including artifact publishing. We will provide additional updates as soon as possible.

Identified: The login issues starting at 21:36 UTC are additionally impacting access to the Anthropic Console. The Anthropic API is not affected.

Identified: Our engineers are still working to resolve an issue impacting Claude.ai which is resulting in some users experiencing elevated errors, and the unavailability of published artifacts. Starting from 21:36 UTC we are aware of an issue preventing people from logging in, and are working to resolve this as quickly as possible.

Identified: We are continuing to work to fully resolve issues impacting a small number of requests to Claude.ai. Published artifacts remain unavailable, and we are working to re-enable all functionality as soon as possible.

Identified: We are continuing to work to resolve an issue causing errors for some Claude.ai users. As a result of these issues, artifact publishing is currently unavailable.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating an issue resulting in elevated errors on Claude.ai, unrelated to model availability.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating this issue.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating a recurrence of errors impacting requests to Claude Opus 4. Our engineers are working to resolve this issue and prevent further recurrences, as quickly as possible.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating this issue.

Resolved: As of 8:25 UTC the level of errors on Claude 4 Sonnet is at the baseline. Claude 4 Opus also had an uptick in errors between 7:25 UTC and 7:43 UTC, but that has also recovered.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating an issue where Claude 4 Sonnet has had an elevated error rate since 6:05 UTC.

Resolved: As of 15:15 UTC the errors on the Claude 4 Sonnet model have returned to baseline.

Investigating: We are currently investigating this issue.

Resolved: The incident occurred between 15:33 UTC and 15:50 UTC. We have now mitigated it.

Investigating: We are currently investigating this issue.

Resolved: This incident has been resolved.

Identified: The issue has been identified and a fix is being implemented.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating elevated errors on requests to Claude 3.5 Sonnet on the API, Claude.ai, and the Anthropic Console.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating this issue.

Resolved: This incident has been resolved.

Identified: From 21:36–21:52, users were unable to access Claude.ai or the Anthropic Console. This issue has been resolved, but we are continuing to work to resolve an issue which is resulting in a low rate of errors for users of Claude.ai, including artifact publishing. We will provide additional updates as soon as possible.

Identified: The login issues starting at 21:36 UTC are additionally impacting access to the Anthropic Console. The Anthropic API is not affected.

Identified: Our engineers are still working to resolve an issue impacting Claude.ai which is resulting in some users experiencing elevated errors, and the unavailability of published artifacts. Starting from 21:36 UTC we are aware of an issue preventing people from logging in, and are working to resolve this as quickly as possible.

Identified: We are continuing to work to fully resolve issues impacting a small number of requests to Claude.ai. Published artifacts remain unavailable, and we are working to re-enable all functionality as soon as possible.

Identified: We are continuing to work to resolve an issue causing errors for some Claude.ai users. As a result of these issues, artifact publishing is currently unavailable.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating an issue resulting in elevated errors on Claude.ai, unrelated to model availability.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating this issue.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating a recurrence of errors impacting requests to Claude Opus 4. Our engineers are working to resolve this issue and prevent further recurrences, as quickly as possible.

Resolved: This incident has been resolved.

Identified: The issue has been identified and a fix is being implemented.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating elevated errors on requests to Claude 3.5 Sonnet on the API, Claude.ai, and the Anthropic Console.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are investigating elevated 499 errors being experienced by API customers.

Investigating: We're currently investigated elevated p50 latency on the api that began March 18th, 2025 around 7pm PT.

Resolved: This incident has been resolved.

Monitoring: We are continuing to monitor for any further issues.

Monitoring: A fix has been implemented and we are monitoring the results.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating this issue.

Resolved: The following models have seen errors below the baseline:

• Claude 3.5 Sonnet since 16:20 UTC
• Claude 4 Sonnet since 15:39 UTC

We are resolving this incident.

Investigating: We've seen the following models have issues:

• Claude 3.5 Sonnet from 12:30 UTC
• Claude 3.7 Sonnet between 11:30 UTC and 14:45 UTC
• Claude 4 Sonnet from 14:30 UTC

We are working on mitigating the user impact.

Monitoring: We are observing an increase in error rates on multiple older models. A fix has been implemented and we are continuing to monitor.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating this issue.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating this issue.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating a recurrence of errors impacting requests to Claude Opus 4. Our engineers are working to resolve this issue and prevent further recurrences, as quickly as possible.

Resolved: This incident has been resolved.

Identified: We have identified a continued impact to some requests to Claude Opus 4, and our engineers are working to resolve these. We will provide additional updates as soon as possible.

Monitoring: From 16:21–16:45 UTC, requests to Opus 4 received errors. We have applied a fix and are currently monitoring closely to ensure no further recurrence.

Investigating: We are currently investigating an issue with Opus 4 returning 500s in the API.

Resolved: As of 8:25 UTC the level of errors on Claude 4 Sonnet is at the baseline. Claude 4 Opus also had an uptick in errors between 7:25 UTC and 7:43 UTC, but that has also recovered.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating an issue where Claude 4 Sonnet has had an elevated error rate since 6:05 UTC.

Resolved: As of 15:15 UTC the errors on the Claude 4 Sonnet model have returned to baseline.

Investigating: We are currently investigating this issue.

Resolved: The incident occurred between 15:33 UTC and 15:50 UTC. We have now mitigated it.

Investigating: We are currently investigating this issue.

Resolved: This incident has been resolved.

Identified: The issue has been identified and a fix is being implemented.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Investigating: We are currently investigating elevated errors on requests to Claude 3.5 Sonnet on the API, Claude.ai, and the Anthropic Console.

Resolved: This incident has been resolved.

Monitoring: A fix has been implemented and we are monitoring the results.

Resolved: This incident has been resolved.

Identified: We have identified a continued impact to some requests to Claude Opus 4, and our engineers are working to resolve these. We will provide additional updates as soon as possible.

Monitoring: From 16:21–16:45 UTC, requests to Opus 4 received errors. We have applied a fix and are currently monitoring closely to ensure no further recurrence.

Investigating: We are currently investigating an issue with Opus 4 returning 500s in the API.

Resolved: As of 8:25 UTC the level of errors on Claude 4 Sonnet is at the baseline. Claude 4 Opus also had an uptick in errors between 7:25 UTC and 7:43 UTC, but that has also recovered.

Identified: The issue has been identified and a fix is being implemented.

Investigating: We are currently investigating an issue where Claude 4 Sonnet has had an elevated error rate since 6:05 UTC.

Resolved: As of 15:15 UTC the errors on the Claude 4 Sonnet model have returned to baseline.

Investigating: We are currently investigating this issue.

Resolved: The incident occurred between 15:33 UTC and 15:50 UTC. We have now mitigated it.

Investigating: We are currently investigating this issue.