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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
Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API
major Observed active window 2h 8m

View incident details and source

Started:

claude.ai Claude Console (platform.claude.com) Claude API (api.anthropic.com) Claude Code Claude Cowork
monitoring
All services have been operating normally since 14:59 UTC. We are continuing to monitor.
monitoring
Most services have recovered as of 14:59 UTC. Signing in, starting new chats, voice conversations, Claude Code and Cowork sessions, purchases and file uploads are working again. Some messages sent between 14:00 and 14:59 UTC may not have been saved. We are monitoring closely and will post another update within 30 minutes.
investigating
The errors that began at 14:00 UTC were mitigated at 14:36 UTC, and existing conversations are mostly working again. A second issue is preventing many users from signing in (single sign-on and Sign in with Apple are unavailable), starting new chats, voice conversations and Claude Code or Cowork sessions, making purchases, and uploading files. If you're signed in, please don't sign out. We're working on a fix and will post another update within 30 minutes.
investigating
We have applied a mitigation and error rates have dropped substantially. Some sign-in attempts, account actions and Claude Code and Cowork sessions are still failing. We are continuing to work on a full fix.
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 elevated error rates affecting Claude.ai (including the desktop and mobile apps), Claude Code and Claude Cowork. Some requests to the Claude API are also returning errors. We will provide an update as soon as possible.
investigating
We are investigating elevated error rates affecting Claude.ai (including the desktop and mobile apps), Claude Code and Claude Cowork. Users may see failed requests, errors loading or sending conversations, or be asked to sign in again; retrying may succeed. We will provide an update as soon as possible.
Elevated errors for multiple models
major Observed active window 1h 42m

View incident details and source

Started:

claude.ai Claude API (api.anthropic.com) Claude Code Claude Cowork
monitoring
We have seen success rates return to normal across affected models, and are monitoring closely to ensure no further issues.
identified
We are continuing to work to resolve errors affecting some models. At this time, requests to Claude Fable 5 and 5.1 and Mythos 5 and 5.1 have returned to normal success rates. We are working to resolve remaining errors affecting Claude Opus 5, and will provide an additional update shortly.
identified
We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 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 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.
Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1
major Observed active window 1h 26m

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Started:

claude.ai Claude API (api.anthropic.com) Claude Code Claude Cowork
monitoring
A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue.
investigating
We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible.
investigating
We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible.
Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
major Observed active window 20m

View incident details and source

Started:

claude.ai Claude API (api.anthropic.com) Claude Code Claude Cowork
monitoring
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
monitoring
A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring for recovery.
identified
We have identified the cause of elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1 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 Fable 5.1 and Claude Mythos 5.1. We will provide an update as soon as possible.
Degraded performance on the Claude API
minor Observed active window 11m

View incident details and source

Started:

Claude API (api.anthropic.com) Claude Cowork
identified
We are experiencing slower than normal response times on the Claude API for some customers whose traffic enters through the US Midwest. Users may experience elevated latency and some request timeouts.
Degraded functionality for Claude Cowork on Windows
major Observed active window 99h 20m

View incident details and source

Started:

Claude Cowork
identified
A Windows update released September 8 has left Claude Cowork on Windows unable to run local commands, because its workspace can no longer reach your computer's drive. For most users, chat and file reading and editing still work. There's no in-app workaround yet, and restarting or reinstalling won't help. Microsoft has developed a fix and is working to release it. We'll post an update when we have more to share.
Elevated errors for multiple models
major Observed active window 2h 58m

View incident details and source

Started:

claude.ai Claude API (api.anthropic.com) Claude Code Claude Cowork
monitoring
A fix has been deployed for Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and we are monitoring for recovery.
identified
The only affected models right now are Opus 4.8 and Opus 5. The rest of the models have recovered to baseline error rate.
identified
We are continuing to work on a fix for this issue.
identified
An exhaustive list of affected models: Mythos/Fable 5.1, Mythos/Fable 5, Opus 5, Opus 4.8, Opus 4.6.
identified
We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 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 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.
Elevated errors for Claude Sonnet 5
major Observed active window 22m

View incident details and source

Started:

claude.ai Claude API (api.anthropic.com) Claude Code Claude Cowork
monitoring
A fix has been implemented and we are monitoring the results.
investigating
We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.
Elevated errors for Claude Sonnet 5
major Observed active window 27m

View incident details and source

Started:

claude.ai Claude API (api.anthropic.com) Claude Code Claude Cowork
investigating
We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.
Delays in credit purchases
minor Observed active window 1h 58m

View incident details and source

Started:

Claude Console (platform.claude.com)
monitoring
We have identified and resolved an issue where users who reached a balance of zero usage credits saw delays in the availability of newly purchased credits, resulting in some requests to the Claude API receiving 'credit balance is too low' errors erroneously. This affected credits purchased from 05:10am PT / 12:10 UTC to 2:35pm PT / 21:35 UTC. At this time, newly purchased credits should be available as expected and we are working to resolve any remaining impact.

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.

May 2026
opus 4.7 elevated errors
minor Source not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Elevated errors for Claude Opus 4.8
major Source not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been deployed for Claude Opus 4.8 and success rates have returned to normal. Users saw elevated errors on requests to the model from 18:16–18:42 UTC.
investigating
We are investigating elevated errors on requests to Claude Opus 4.8. 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
monitoring
A fix has been implemented and we are monitoring the results.
investigating
We are currently investigating this issue.
Billing and subscription management issues
minor Source not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
identified
We are currently experiencing issues with billing and subscription management on claude.ai and the Anthropic Console. Users may see errors when viewing subscription details, payment methods, or attempting to upgrade or change plans. Chat and API access are not affected. We have identified the cause and are working on a fix.
Elevated errors on Claude Opus 4.7
major 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
major 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
major 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 for Claude Code in Slack
minor Source not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Elevated error rates on Opus 4.7
Source not attested
Last archived state: resolved
View archived record details
monitoring
We had an elevated error rate on Opus 4.7 from 6:30 UTC until 10:30 UTC
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.
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