Anthropic outage history and postmortems
AI · San Francisco, US · 93 incidents in 90 days · 97.4% implied uptime · last 3d ago
Incidents
400 on fileAbout Anthropic
Anthropic, PBC is an American artificial intelligence (AI) public benefit corporation headquartered in San Francisco, California. Its flagship product is Claude, a series of proprietary large language models (LLMs).
The last year, day by day
Downtime, added up
Anthropic: 2d 9h weighted downtime in range, category median 5h 8m.
93 incidents, 31 major or critical, 9d 17h of incident time (6d 2h major or critical, 3d 14h partial), longest 4d 3h, implied uptime 97.4%, between Jun 28, 2026 and Sep 25, 2026.
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Questions
Is Anthropic down right now?
Check Anthropic's own status page at https://status.claude.com for the live state. This page shows Anthropic's incident history from that page; the most recent incident started 2026-09-22: "Elevated errors for multiple models".
How often does Anthropic have outages?
Anthropic posted 94 incidents in the last 90 days and 400 in the last year, 31 of them major or critical in the last 90 days. The median incident lasted 1h.
When was Anthropic's last major outage?
2026-09-22: "Elevated errors for multiple models", lasting 1h 38m.
What usually causes Anthropic incidents?
Anthropic's status updates in this period do not name a root cause.
Sources: vendors' own status pages, published postmortems and SEC 8-K Item 1.05 filings, read daily. Times as reported. Logos via logo.dev; trademarks belong to their owners.