Anthropic took its flagship Claude services offline for roughly 36 minutes on August 16, 2026, after an issue that began with users unable to authenticate spread into degraded performance across five products: claude.ai, Claude Console, the Claude API, Claude Code, and Claude Cowork. The company's status page logged the first notice at 21:58 UTC and marked the incident resolved at 22:34 UTC.
The Incident Timeline
The first sign of trouble was a login failure. Anthropic's initial notice said it was investigating "an issue with users authenticating to claude.ai, Claude Code, and Claude Cowork." Four minutes later, at 22:02 UTC, the company widened the incident to cover reports of degraded performance on claude.ai and platform.claude.com, the console where developers manage API usage.
From there the disruption touched the full serving stack. By 22:22 UTC Anthropic said it had deployed a fix for an issue affecting all five named services, including the API that carries third-party and enterprise workloads, and was monitoring for recovery. The resolved notice landed at 22:34 UTC.
A Pattern of Recent Incidents
The August 16 disruption is the fourteenth incident logged on Anthropic's status page in the past two weeks, a run that has touched nearly every model and surface the company operates. The day before, elevated errors on requests to Claude Fable 5 ran from 20:00 UTC on August 14 to 00:11 UTC on August 15. August 14 alone produced three separate incidents.
Earlier in the week, an August 13 incident saw elevated errors on Claude Mythos 5 and Claude Fable 5, with Claude Sonnet 5 named in the initial investigation, resolved after about 95 minutes. On August 12, errors across multiple models degraded performance for more than four hours.
Reliability Metrics
Even with the recent run of incidents, Anthropic's 90-day availability figures remain above 99 percent on every tracked component, though the consumer-facing surfaces sit at the low end. Claude.ai shows 99.34 percent uptime over the period, Claude Code 99.36 percent, and Claude Cowork 99.45 percent. The Claude API stands at 99.44 percent, and Claude Console at 99.82 percent.
The gap between those tiers is where the outage math lands hardest. Claude.ai's 99.34 percent works out to roughly 14 hours of cumulative unavailability across 90 days, concentrated in events like the August 16 disruption. For developers routing production traffic through the API, a 99.44 percent figure implies about 12 hours of degraded or failed requests over the same window, which is why multi-provider fallback routing has become a fixture of serious deployment architectures.