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OpenAI Outage History

Every past OpenAI outage tracked by IsDown, with detection times, duration, and resolution details.

There were 805 OpenAI outages since February 2021. The 325 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor May 11, 2026

May 2026: Elevated error rates with GPT 5.5

Detected May 11, 2026 1:02 PM EDT · Resolved May 11, 2026 4:13 PM EDT · Duration about 3 hours

OpenAI experienced elevated error rates with GPT 5.5 that affected APIs, Chat, and Responses for 3.2 hours. The issue was identified as users experiencing elevated errors across the impacted services. A mitigation was applied and the service was being monitored for recovery.

Minor May 10, 2026

May 2026: Users may experience elevated errors in ChatGPT uploading files and Codex Cloud creating tasks

Detected May 10, 2026 9:23 PM EDT · Resolved May 11, 2026 1:39 AM EDT · Duration about 4 hours

OpenAI experienced elevated errors affecting ChatGPT file uploads and Codex Cloud task creation for 4.3 hours. The issue impacted users' ability to upload files to ChatGPT and create tasks in Codex Cloud. OpenAI applied a mitigation and monitored the recovery to resolve the problem.

Minor May 8, 2026

May 2026: Degraded Performance with Codex Cloud Tasks

Detected May 8, 2026 11:07 AM EDT · Resolved May 8, 2026 12:20 PM EDT · Duration about 1 hour

OpenAI experienced degraded performance with Codex Cloud tasks, where follow-up prompts were failing at higher than expected rates. The incident affected both ChatGPT and Codex services for 1.2 hours. The team investigated the issue, though the summary does not specify the final resolution method.

Minor May 8, 2026

May 2026: Increased Error Rate for gpt-5.5 model in the API

Detected May 8, 2026 8:31 AM EDT · Resolved May 8, 2026 10:16 AM EDT · Duration about 2 hours

OpenAI experienced increased error rates and higher than normal latency for the gpt-5.5 model API, affecting APIs, Chat, and Responses components for 1.8 hours. The service team implemented mitigations that gradually reduced error rates and restored normal performance. The incident was resolved after applying final mitigations and confirming recovery through monitoring.

Minor May 7, 2026

May 2026: Elevated transcription failures affecting ChatGPT & Codex

Detected May 7, 2026 1:15 PM EDT · Resolved May 8, 2026 4:32 AM EDT · Duration about 15 hours

OpenAI experienced elevated transcription failures that affected ChatGPT, Voice mode, and Codex services for 15.3 hours. Users encountered increased error rates across these services during the incident. The issue was resolved by applying a mitigation, and the service was returned to normal operation under monitoring.

Minor May 7, 2026

May 2026: Increased error rate with image generation in the API

Detected May 7, 2026 3:55 AM EDT · Resolved May 7, 2026 5:40 AM EDT · Duration about 2 hours

OpenAI experienced increased error rates with image generation through their API, affecting the Images component and broader API functionality. The incident was classified as minor and lasted approximately 1.8 hours. The issue was under investigation with monitoring in place to track the problem.

Minor May 4, 2026

May 2026: Issue affecting some pages on the ChatGPT website

Detected May 4, 2026 11:29 AM EDT · Resolved May 4, 2026 1:12 PM EDT · Duration about 2 hours

OpenAI experienced an issue that made the ChatGPT pricing and overview pages unavailable for 1.7 hours. The company investigated the problem, implemented a mitigation solution, and restored service to the affected website pages.

Minor May 1, 2026

May 2026: Elevated error rate for Responses API

Detected May 1, 2026 10:25 AM EDT · Resolved May 1, 2026 11:39 AM EDT · Duration about 1 hour

OpenAI's Responses API experienced elevated error rates affecting API functionality for 1.2 hours. The issue was investigated and a mitigation was applied, with the service being monitored for recovery.

Minor May 1, 2026

May 2026: Elevated error rates for image generation

Detected May 1, 2026 9:52 AM EDT · Resolved May 1, 2026 10:55 AM EDT · Duration about 1 hour

OpenAI experienced elevated error rates affecting image generation functionality across ChatGPT and APIs for 1.1 hours. Users encountered increased errors when attempting to generate or process images. The incident was identified and a mitigation was implemented to resolve the service disruption.

Minor April 30, 2026

April 2026: Elevated error rates affecting ChatGPT for some users in Europe

Detected Apr 30, 2026 11:55 PM EDT · Resolved May 1, 2026 12:05 AM EDT · Duration 10 minutes

OpenAI experienced elevated error rates that affected ChatGPT users specifically in Europe for approximately 10 minutes. The company quickly identified and applied a mitigation to resolve the issue. The incident was classified as minor and the service was restored with ongoing monitoring of the recovery.