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Anthropic (Claude) Outage History

Daily provider-status observations and published incident history for Anthropic (Claude).

Operational

Anthropic (Claude) is operational. Verified . Official provider source.

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64.9% of 37 verified observed days had no reported provider issue

90-Day Trend

Jul 3Sep 30

Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.

Monthly Status Summary

Month Issue-free days Days Tracked Days with issues
September 2026 63.3% 30 11

This percentage summarizes normalized provider-status observations by calendar day. It is not duration-based, component-weighted, or contractual uptime. See the methodology and limitations.

Recorded Daily Status (Last 91 Days)

Jul 2 Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data

Incident History

September 2026
Degraded performance on platform.claude.com and Claude for Microsoft Office 365
minor Observed active window 1h 4m

View incident details and source

Started:

claude.ai Claude Console (platform.claude.com)
monitoring
We are seeing success rates recover across affected services. Core inference and the API are not impacted.
investigating
We are investigating reports of degraded performance affecting some Claude services, including docs.claude.com. We are working to resolve these issues and will provide an update as soon as possible.
Degraded performance on Claude for Microsoft Office 365
minor Observed active window 22m

View incident details and source

Started:

claude.ai
investigating
We are investigating elevated errors affecting Claude for Microsoft Office 365. We will provide an update as soon as possible.
August 2026
Degraded performance on claude.ai and Claude Code
minor Observed active window 1h 18m

View incident details and source

Started:

claude.ai Claude Code
investigating
We are investigating reports of degraded performance affecting Claude in Slack, Claude Code on the web, and Code Review. We will provide an update as soon as possible.
Degraded performance on claude.ai
minor Observed active window 31m

View incident details and source

Started:

claude.ai
monitoring
We have seen success rates return to normal for requests on Claude.ai and are monitoring closely.
investigating
We are investigating reports of elevated errors affecting chats on claude.ai. We will provide an update as soon as possible.
Elevated errors on Claude Code and Claude Cowork
major Observed active window 3h 3m

View incident details and source

Started:

Claude Code Claude Cowork
monitoring
A mitigation has been applied for the issue affecting Claude Cowork and Claude Code on the web, and we are monitoring for recovery. Sessions that disconnected earlier can be retried
identified
We have identified an issue with an upstream cloud provider affecting Claude Cowork and Claude Code on the web. Some sessions may fail to start or disconnect mid-task; affected sessions can be retried. We are in contact with the provider and will provide an update as soon as possible.

Legacy Incident Archive

206 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.

June 2026
Elevated errors on Claude Opus 4.6
minor Source not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Fable not available in the model picker in Claude Code Desktop
major Source not attested
Last archived state: resolved
View archived record details
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.
Elevated errors on Claude Opus 4.8 (Fast Mode)
minor Source not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Elevated errors on Claude Opus 4.8
minor Source not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Elevated errors on Claude Opus 4.7
minor Source not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been implemented and we are monitoring the results.
investigating
We are currently investigating this issue.
Elevated errors on Claude Haiku 4.5
minor Source not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Elevated errors on Claude Opus 4.7
minor Source not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been implemented and we are monitoring the results.
investigating
We are currently investigating this issue.
Elevated errors on Claude Opus 4.7
minor Source not attested
Last archived state: resolved
View archived record details
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.
Degraded performance for multiple models
minor Source not attested
Last archived state: resolved
View archived record details
identified
We have identified the cause of elevated errors on requests to several Claude models and are working to resolve these issues.
investigating
We are investigating elevated errors on requests to Claude Opus 4.7. We will provide an update as soon as possible.
Elevated errors on Claude Opus 4.8
minor Source not attested
Last archived state: resolved
View archived record details
identified
We are experiencing elevated error rates on Claude Opus 4.8. Our team has identified the issue and is working to fully resolve these errors.
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