Elevated Codex API authentication errors
All impacted services have now fully recovered.
GPT-5.4 Nano Uptime Status
OperationalGPT-5.4 nano is designed for tasks where speed and cost matter most like classification, data extraction, ranking, and sub-agents
30-Day Uptime
99.06%
Past Incidents (30d)
2
Error rate (24h)
0.00%
Is GPT-5.4 Nano Down Now?
Last 30 days
28/30 days operational | 99.06% uptime
30 days ago
Today
Operational
Degraded / Partial
Outage
Endpoint & Model ID
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Issues with Custom GPT actions
All impacted services have now fully recovered.
Elevated error rates with the invalid_prompt error code
All impacted services have now fully recovered.
One API, every model, automatic failover.
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