Anthropic Outage History

The Claude.ai component experienced transient errors when initiating chats, causing a brief outage in chat creation. The incident began at 1:33 AM UTC and was resolved by 1:48 AM UTC, lasting about 15 minutes. The status page noted the issue was identified and a fix was being implemented around 1:30 AM UTC. The Claude.ai component received two official updates during the incident.

The impact was limited to chat creation functionality, with no broader service disruption reported, and Claude.ai returned to normal operation after the fix was deployed.

Anthropic Claude Opus 4 experienced a brief degradation with elevated errors across the web console, API, and Claude.ai. The incident began at Aug 22, 2025 11:43 PM UTC and the status page listed console.anthropic.com, api.anthropic.com, and claude.ai as affected. Users interacting with Claude Opus 4 may have experienced errors or slower responses during this period.

The outage lasted approximately 1 hour and 15 minutes, with Anthropic publishing two status updates as engineers investigated and then resolved the issue. The services returned to an operational state by Aug 23, 2025 12:58 AM UTC with all three components listed as up.

Impact was limited to three components and the incident was contained. Anthropic issued two status updates to communicate investigation and resolution, and Claude Opus 4 components returned to up by the end of the incident.

The Claude service experienced a multi-hour degraded period affecting api.anthropic.com, claude.ai, and Claude Code. The incident began at 5:23 PM UTC with intermittent visibility issues related to Google Docs in the project knowledge base, followed by elevated errors on Claude Opus 4. The disruption lasted approximately 5 hours and 10 minutes and was resolved by 10:33 PM UTC. Users likely encountered degraded API responses and intermittent access to Claude features during the event.

The service published three official status updates documenting the progression from investigation to restoration, noting ongoing issues before all components returned to normal by the end of the window.

The Anthropic Claude Haiku 3.5 service experienced an outage with elevated errors affecting the API at api.anthropic.com and the web Console at console.anthropic.com. The incident began at 2:58 PM UTC when the Claude status page transitioned to a warning as engineers worked to implement a fix. The two affected components were api.anthropic.com and console.anthropic.com, and the issue was resolved by 4:03 PM UTC after about 1 hour and 5 minutes. The provider issued 2 status updates during the incident.

Anthropic Claude Sonnet 4 experienced elevated errors affecting multiple Claude services, including claude.ai, api.anthropic.com, and Claude Code. The issue prompted an investigation starting at Aug 21, 2025 1:39 PM UTC, with the status updated to a degraded state at 1:43 PM UTC as engineers worked to identify the root cause. Users reported API errors in the early afternoon UTC, around 2:15 PM UTC, indicating broader impact across the platform.

Anthropic Claude experienced a brief degradation affecting api.anthropic.com, claude.ai, and Claude Code. The incident began at 2:58 AM UTC and was resolved by 3:48 AM UTC, lasting about 50 minutes. Users interacting with the Claude API, Claude AI, or Claude Code likely saw elevated errors or slower responses during this window. The issue impacted multiple core endpoints across the Claude platform.

Anthropic Claude Opus 4.1 experienced elevated errors that affected api.anthropic.com, claude.ai, and console.anthropic.com. Users attempting to use the API, interact with Claude, or access the console likely saw request failures or degraded responses. The disruption began at 1:22 PM UTC and persisted until 3:28 PM UTC. The incident involved three components and generated a small amount of user feedback.

Anthropic Claude experienced connectivity issues that caused some users' chat sessions to end prematurely. Users reported activity in the UTC afternoon window from around 5:00 PM UTC to 5:54 PM UTC.

An Early Warning Signal was triggered at 5:54 PM UTC based on these user reports, indicating detection before any official Claude status update. At the time of writing, Claude’s status page had not published an acknowledged incident. The reported impact appeared limited to chat connectivity for a subset of users.

Anthropic Claude Sonnet 4 experienced a brief degradation affecting api.anthropic.com, claude.ai, and console.anthropic.com. Users may have encountered elevated errors or slower responses during the incident.

Status updates indicate the investigation began around Aug 18, 2025 7:49 AM UTC with the affected components entering degraded state by 7:53 AM UTC. The issue was resolved by 8:03 AM UTC. The provider issued 2 status updates during the incident to communicate progression and resolution.

Anthropic Claude Opus 4.1 experienced elevated errors that led to degraded performance across three components: api.anthropic.com, claude.ai, and console.anthropic.com. Users could have encountered slower responses or intermittent issues when using Claude Opus 4.1.

The outage began at 7:13 AM UTC and was resolved by 7:38 AM UTC, lasting roughly 25 minutes. The Claude Opus status page issued two updates during the incident as teams investigated and then restored normal service to all affected endpoints.