Meta Provider API calls are failing on OpenRouter with error 401.
Was OpenRouter down? OpenRouter reported “Meta Provider API calls are failing on OpenRouter with error 401.” on Sep 24, 2026, 10:55 PM UTC. Full timeline below. This incident affects OpenRouter — see live OpenRouter status. Source: official vendor status feed.
Timeline
Sep 25, 2026, 12:33 AM UTC
The issue is now resolved. Root cause was identified as an authentication issue on the Meta Developer API Platform impacting all Managed Meta Accounts including OpenRouter's.
Sep 24, 2026, 11:46 PM UTC
Meta Provider API calls are operational again. We are continuing to monitor.
Sep 24, 2026, 11:28 PM UTC
The Meta team has begun applying remediations and success rate is improving. Root cause is still unknown.
Sep 24, 2026, 11:15 PM UTC
The Meta team is continuing to investigate and is beginning work on remediation. Root cause is still unknown.
Sep 24, 2026, 10:55 PM UTC
The Meta team has been pinged and is investigating.
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- Web application degradedAug 28, 2026, 7:05 AM UTC · resolvedDegraded
- Elevated 429s on Anthropic and OpenAIAug 28, 2026, 2:15 AM UTC · resolvedDegraded
- BackfillMay 31, 2026, 1:00 PM UTC · resolvedDegraded