Outage in OpenAI ChatGPT

Elevated errors for ChatGPT Go (5.3 Thinking)

Resolved Minor

April 29, 2026 - Started about 2 hours ago - Lasted about 1 hour

Incident Report

Summary AI Generated

ChatGPT Go users experienced elevated error rates specifically affecting the 5.3 Thinking model, with users reporting "something seems to have gone wrong" messages and the service not responding to requests properly. The incident impacted multiple components including ChatGPT core functionality, APIs, file uploads, voice mode, and other features for approximately 1.3 hours. OpenAI identified the issue, implemented a mitigation, and monitored the recovery process.

We have identified that ChatGPT Go users are experiencing elevated errors. We are working on implementing a mitigation.

Components affected

OpenAI ChatGPT ChatGPT OpenAI ChatGPT APIs OpenAI ChatGPT File uploads OpenAI ChatGPT Voice mode OpenAI ChatGPT GPTs OpenAI ChatGPT Image Generation OpenAI ChatGPT Deep Research OpenAI ChatGPT Operator OpenAI ChatGPT Compliance OpenAI ChatGPT Login OpenAI ChatGPT Web OpenAI ChatGPT Search

Latest Updates ( sorted recent to last )

MONITORING about 1 hour ago - at 04/29/2026 09:59PM

We have applied the mitigation and are monitoring the recovery.

IDENTIFIED about 1 hour ago - at 04/29/2026 09:25PM

We have identified elevated error rates impacting ChatGPT Go (5.3 Thinking). Other ChatGPT Go models are not affected at this time.

The team is actively working on a mitigation.

IDENTIFIED about 2 hours ago - at 04/29/2026 09:01PM

We have identified that ChatGPT Go users are experiencing elevated errors.

We are working on implementing a mitigation.

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