OpenAI outage — July 28, 2026
Elevated error rates with the invalid_prompt error code
OpenAI’s Multiple services has a confirmed disruption, detected on July 28, 2026. 503Radar’s sensors raised the first signal at 16:13 UTC, 8h 44m before the official status page acknowledged impact.
Key facts
| Detected | July 28, 2026 · 16:13 UTC |
| Confirmed | 00:58 UTC · lead time 8h 44m |
| Service | Multiple services |
| Official record | https://status.openai.com |
Timeline
- 16:13Z
Detected · Signal
8 crowd signals for Multiple services on OPENAI crossed the signal threshold. - 00:58Z
Confirmed · Official
An official OPENAI status-page notice corroborated the event — 8h 44m after detection.
How this was detected
1 independent evidence class for Multiple services on OPENAI. 8 crowd reports across bluesky (single platform — not corroborating), z=+1.4σ vs the cell baseline. Official notice confirms it, 8h 44m after the crowd.