Anthropic outage history

Users attempting to load usage data on the Claude Console at platform.claude.com encountered elevated errors when loading data on the Usage page and the Admin API usage report endpoint. Messages API requests were not affected. The degradation began at 1:23 AM UTC and persisted for about an hour, impacting usage-data loading functionality during that window.

An outage affected Claude Opus 5.5 around 12:28 PM UTC, with elevated errors impacting Claude Cowork, claude.ai, Claude API (api.anthropic.com), and Claude Code. Users issuing requests likely saw failures or degraded responses. Reports began around 12:15 PM UTC with a handful describing connection and request errors, indicating the disruption was noticed by some users before full restoration.

An outage affected Claude Mythos 5.1 and Claude Fable 5.1, with elevated errors on requests to those models. The impact touched Claude Cowork, claude.ai, Claude API (api.anthropic.com), and Claude Code, causing users to encounter errors when invoking Claude services. The incident began at 1:13 PM UTC and was resolved by 1:23 PM UTC, lasting about ten minutes.

The Claude API and Claude Console experienced degraded performance starting at 4:24 PM UTC due to delays in credit purchases not reflecting in account balances. As a result, some requests failed with insufficient balance, affecting transactions and console access. The issue lasted about two hours and impacted both API calls and console interactions. The service communicated an ongoing investigation and degraded performance during the incident, with an update that by 6:28 PM UTC both components had returned to normal operation.

An outage affected Anthropic Claude services, with Claude.ai, Claude Code, and Claude Cowork experiencing authentication and request failures. Users reported being unable to sign in, load conversations, or start new chats across desktop and mobile apps and the Claude API. The disruption began around 2:00 PM UTC and impacted multiple Claude components.

Users of Anthropic Claude encountered elevated errors when calling Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5, causing degraded performance across Claude Cowork, claude.ai, Claude API (api.anthropic.com), and Claude Code. Some requests failed or returned errors, impacting workflows that rely on these models. The outage began at 12:59 AM UTC and prompted an investigation, with early status updates describing elevated errors for multiple models.

Anthropic Claude users attempting to create or manage subscriptions via Google Play on Android devices faced a brief disruption. The Claude status page noted a Google Play subscriptions issue, with Google confirming the problem and Claude awaiting further updates. The disruption began at 4:18 PM UTC and was resolved by 4:53 PM UTC.

The scope appeared limited to Google Play-driven subscription flows; no broader Claude services were indicated as affected. The disruption lasted roughly 35 minutes.

An outage affected Claude Mythos 5.1 and Claude Fable 5.1, with intermittent errors observed across multiple Claude components including Claude Cowork, claude.ai, Claude API (api.anthropic.com), and Claude Code. Users attempting to access these models encountered failed or degraded responses beginning at Sep 15, 2026 9:53 AM UTC. The issue persisted as error spikes were reported across requests until a fix was deployed around Sep 15, 2026 10:53 AM UTC, after which monitoring confirmed improvement. By Sep 15, 2026 11:18 AM UTC, the service was returning to normal and status returned to up.

An outage began on Sep 11, 2026 2:23 PM UTC affecting Claude Mythos 5.1 and Claude Fable 5.1 with elevated errors on requests to those models. The incident also touched Claude.ai, the Claude API (api.anthropic.com), and Claude Code, causing user-visible errors for those features. A fix was deployed and recovery monitoring started by Sep 11, 2026 2:33 PM UTC, with services gradually returning to normal for the affected components. Separately, Claude Cowork on Windows showed degraded functionality due to a Windows update that prevented local commands from running, while chat and file reading remained available; Microsoft was actively working on a fix. The Claude Cowork issue moved back to normal operation by Sep 14, 2026 7:18 PM UTC.

Users experienced degraded performance on the Claude API with slower response times for traffic entering through the US Midwest. Some requests timed out, affecting automated workflows and chat interactions that rely on api.anthropic.com. The degraded API performance began at Sep 10, 2026 9:48 PM UTC and continued into the following day. Later that night, Claude Cowork on Windows showed degraded functionality as a Windows update prevented local commands from reaching the workspace drive.

On Sep 11, 2026 2:23 PM UTC, elevated errors were observed for Claude Mythos 5.1 and Claude Fable 5.1. A fix was deployed by Sep 11, 2026 2:33 PM UTC and the team began monitoring recovery. The affected areas included Claude AI services, the Claude API (api.anthropic.com), and Claude Code.

Degraded Windows Cowork functionality persisted at times through Sep 14, 2026 7:18 PM UTC when Claude Cowork moved back to up. User reports were limited, including one from Orlando noting that Claude was not working around 4:39 PM UTC. By Sep 14, 2026 7:18 PM UTC the service had largely recovered, with Claude Cowork restored to normal operation.