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CompaniesAnthropicMonthly reportsMay 2025

Anthropic in May 2025: incidents, uptime and changes

35incidents posted
15labelled major or critical
97.51%free of major/critical
90.65%free of any incident
0price changes
0notable page changes

Vendor-reported outage time 18 h 31 min, incident time 2.9 days. Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours. Last 90 days.

By vendor label: Critical 2 · Major 13 · Minor 18 · No impact listed 2

Major and critical incidents 15

IncidentImpactStartedDurationStatusDay
Elevated errors on Claude.ai and the Anthropic ConsoleCritical26 minresolved05-12
Claude.ai and console.anthropic.com downCritical2.3 hresolved05-27
Elevated errors on Claude 3 OpusMajor39 minresolved05-02
Elevated errors for Haiku 3 and Haiku 3.5Major38 minresolved05-09
Elevated errors on ResearchMajor3.0 hresolved05-09
Elevated errors for requests to Claude 3.5 HaikuMajor18 minresolved05-09
Elevated errors in the APIMajor28 minresolved05-10
Elevated 500 Internal Server Errors for API and Claude.aiMajor3.3 hresolved05-12
Errors when logging into Claude.aiMajor50 minresolved05-13
Elevated errors for web search requests on APIMajor2.6 hresolved05-18
Elevated errors across many modelsMajor47 minresolved05-21
Elevated errors on requests to some modelsMajor1.3 hresolved05-21
MCP tool calling issues for Advanced Research queries in Claude.aiMajor2.1 hresolved05-21
Elevated errors on requests to some modelsMajor21 minresolved05-21
Elevated errors on requests to some modelsMajor9 minresolved05-21

Other incidents 20

IncidentImpactStartedDurationStatusDay
SSO Sign-In IssuesNo impact listed2.8 hresolved05-01
Elevated Errors on Haiku 3.5Minor42 minresolved05-03
Elevated errors on Claude 3.7 SonnetMinor37 minresolved05-06
Elevated errors on Claude 3.7 SonnetMinor58 minresolved05-07
Elevated errors for requests to Claude 3 SonnetMinor8 minresolved05-07
Elevated errors for requests to Claude 3.5 HaikuMinor13 minresolved05-08
Elevated errors for requests to Claude 3.5 HaikuMinor55 minresolved05-08
Elevated errors for requests to Claude 3.5 SonnetMinor13 minresolved05-08
Errors when attempting to purchase API creditsMinor2.3 hresolved05-10
Elevated errors for requests to Claude 3.7 SonnetMinor44 minresolved05-12
Elevated errors on long context requests with Claude for EnterpriseMinor27 hresolved05-15
Elevated errors when attempting to purchase API creditsMinor3.9 hresolved05-17
Errors with images on Claude.ai conversations with Claude Sonnet 4Minor2.0 hresolved05-22
Elevated errors on tool use for Claude Code on Opus 4Minor55 minresolved05-22
Elevated errors on Claude Sonnet 4Minor2.1 hresolved05-23
Incorrect display of 'Legacy Model' on Claude.ai for conversations with Opus 4No impact listed0 minresolved05-24
Elevated errors for requests to Claude 4 OpusMinor2.5 hresolved05-26
Elevated errors for requests to Claude 4 OpusMinor5.7 hresolved05-26
Elevated errors with code execution toolsMinor1.5 hresolved05-26
Elevated errors on Claude Sonnet 4 for Claude.aiMinor13 minresolved05-29

Cite this

Anthropic posted 35 status incidents in May 2025 (15 major or critical); 0 price changes and 0 notable page changes observed.

Title
Anthropic in May 2025
Vendor
Anthropic
Date
URL
https://rewindex.com/company/anthropic/2025/05

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