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ChatGPT Down? OpenAI Reports Partial Outage Impacting Codex and API Services
On Monday, April 20, 2026, OpenAI experienced a partial outage affecting ChatGPT and Codex, preventing many users from accessing the services. The San-Fracisco based company confirmed it is investigating the disruption.
According to OpenAI, 12 components of ChatGPT and one component of Codex were affected, disrupting services including Login, Voice Mode, and Search functionality.
Per Downdetector, reports surfaced around 10:05am ET on Monday, with more than 7,600 users in the United Kingdom and 1,700 in the United States flagging problems.
After acknowledging the disruption affecting its API platforms, OpenAI applied mitigation measures and began monitoring recovery efforts to restore service availability.
The OpenAI Status Page indicates the outage started around 19:35 UTC on April 20, 2026, affecting many of the estimated 200 million daily active users.