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64.9%of 37 verified observed days had no reported provider issue
90-Day Trend
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 2Today
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
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
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.
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.
August 2026
Issues logging into Claude.ai
minorSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude CodeClaude Cowork
monitoring
We have identified and resolved an issue which resulted in errors when attempting to access Claude.ai, including logging in via subscriptions for Claude Code. Errors occurred between 1:00pm (20:00 UTC) through 1:08pm PT (20:08 UTC). We are monitoring closely to ensure no further issues.
Elevated errors for multiple models
majorSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
identified
At this time, we have seen errors stabilize on Opus 5 and Fable 5, and are working to fully resolve success rates on all affected models. We will provide an update as soon as possible.
identified
We are continuing to work to resolve issues causing elevated requests on multiple models. We will provide an update as soon as possible.
identified
We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and other Claude models and are working on a fix. We will provide an update as soon as possible.
investigating
We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8. We will provide an update as soon as possible.
Elevated errors on requests to multiple models
majorSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
investigating
We are investigating elevated errors on requests to some Claude models. We will provide additional updates as soon as possible.
Elevated errors on Google connectors
minorSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
investigating
We are investigating elevated errors affecting Google connectors (Sheets, Docs, Slides, and Chat) and custom Google integrations on Claude.ai. Core functionality is not affected. We will provide an update as soon as possible.
Degraded performance for Claude Opus 5 and Claude Haiku 4.5
minorSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
monitoring
A fix has been implemented and we are monitoring the results.
identified
We have identified the cause of elevated errors on requests to Claude Opus 5 and Claude Haiku 4.5 and are working on a fix. We will provide an update as soon as possible.
Degraded performance for multiple models
minorSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
monitoring
A fix has been implemented and we are monitoring the results.
investigating
We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.
investigating
We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible.
investigating
We are investigating reports of degraded performance affecting multiple models. We will provide an update as soon as possible.
Degraded performance for Claude Opus 5, Claude Sonnet 5
minorSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
monitoring
A fix has been implemented and we are monitoring the results.
investigating
Claude Opus 5 is operational. Claude Sonnet 5 is degraded. We are investigating.
investigating
We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.
Service disruption on Claude services
majorSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude Console (platform.claude.com)Claude API (api.anthropic.com)Claude CodeClaude Cowork
investigating
We are investigating reports of degraded performance affecting claude.ai and platform.claude.com. We will provide an update as soon as possible.
Service disruption on Claude services
criticalSource not attested
Last archived state: resolved
View archived record details
claude.aiClaude Console (platform.claude.com)Claude API (api.anthropic.com)Claude CodeClaude Cowork
monitoring
A fix has been deployed for the issue affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork and we are monitoring for recovery.
investigating
We are investigating reports of degraded performance affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork. We will provide an update as soon as possible.
investigating
We are investigating an issue with users authenticating to claude.ai, Claude Code, and Claude Cowork. We will provide an update as soon as possible.
Elevated errors for Claude Fable 5
majorSource not attested
Last archived state: resolved
View archived record details
identified
We have identified the cause of the issue affecting Claude services and are working on a fix. We will provide an update as soon as possible.
identified
We have identified the cause of the issue affecting claude.ai and are working on a fix. We will provide an update as soon as possible.
identified
We have identified the cause of elevated errors on requests to Claude Fable 5 and are working on a fix. We will provide an update as soon as possible.
