503RADARINCIDENT ARCHIVEMETHODOLOGY
LIVE · CONFIRMED

OpenAI outage — August 20, 2026

Elevated Errors for Thinking mode in ChatGPT

OpenAI’s ChatGPT has a confirmed disruption, detected on August 20, 2026. 503Radar’s sensors raised the first signal at 09:54 UTC, 4h 13m before the official status page acknowledged impact.

Key facts

DetectedAugust 20, 2026 · 09:54 UTC
Confirmed14:08 UTC · lead time 4h 13m
ServiceChatGPT
Official recordhttps://status.openai.com

Timeline

  1. 09:54Z

    Detected · Signal

    6 crowd signals for ChatGPT on OPENAI crossed the signal threshold.
  2. 14:08Z

    Confirmed · Official

    An official OPENAI status-page notice corroborated the event — 4h 13m after detection.

How this was detected

1 independent evidence class for chatgpt on OPENAI. 6 crowd reports across bluesky (single platform — not corroborating), z=-0.0σ vs the cell baseline. Official notice confirms it, 4h 13m after the crowd.