Outage report · Major outage
Anthropic API outage on Aug 16, 2026
Service disruption on Claude services
What happened
Anthropic API reported a major outage starting Aug 16, 2026, 21:58 UTC, affecting claude.ai, Claude Console (platform.claude.com), Claude API (api.anthropic.com), Claude Code, Claude Cowork. It was marked resolved at Aug 16, 2026, 22:34 UTC.
- The incident lasted 36m from first report to resolution.
- Anthropic API had reported 2 other partial or major outages in the 90 days before it.
- 5 other vendors we track reported a significant incident within 12 hours of it.
Latest update from Anthropic API
The issue affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork has been resolved.
What our independent monitoring saw
Our independent monitoring of Anthropic API started after this incident, so this report is based on Anthropic API's status page.
Other outages around the same time
Significant incidents other vendors reported within 12 hours of this one.
Anthropic API's overall reliability
Anthropic API has a reliability score of 37.0/100, with 97.54% effective uptime and 36 incidents over the last 90 days.
Visit Anthropic API ↗Full Anthropic API reliability report and live status → · Most reliable Anthropic API alternatives →
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