OpenAI outage history and postmortems
AI · San Francisco, US · 27 incidents in 90 days · 99.28% implied uptime · last 14h ago
Incidents
28 on fileAbout OpenAI
OpenAI is an American artificial intelligence (AI) public benefit corporation (PBC) headquartered in San Francisco, California. It develops proprietary generative AI models, particularly its generative pre-trained transformer (GPT) series of large language models.
The last year, day by day
Downtime, added up
OpenAI: 15h 33m weighted downtime in range, category median 5h 8m.
27 incidents, 2 major or critical, 47h 3m of incident time (2h 1m major or critical, 45h 2m partial), longest 12h 6m, implied uptime 99.28%, between Jun 28, 2026 and Sep 25, 2026.
Postmortems
| Started | Incident | Impact | Root cause | Duration |
|---|---|---|---|---|
| Dec 1123:16 UTC | New telemetry service overwhelms Kubernetes control planes | critical | Deployment | 4h 22m |
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Questions
Is OpenAI down right now?
Check OpenAI's own status page at https://status.openai.com for the live state. This page shows OpenAI's incident history from that page; the most recent incident started 2026-09-24: "Elevated Error Rates on GPT-6 Astra Pro".
How often does OpenAI have outages?
OpenAI posted 27 incidents in the last 90 days and 27 in the last year, 2 of them major or critical in the last 90 days. The median incident lasted 51m.
When was OpenAI's last major outage?
2026-09-17: "Elevated errors affecting ChatGPT Work mode", lasting 1h 21m.
What usually causes OpenAI incidents?
Where OpenAI explained the cause, the most common was deployment or rollout (1 incidents). Most status updates do not name a 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.