Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1
A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue.
Anthropic Claude Uptime Status
OperationalAnthropic's Claude family of models.
30-Day Uptime
70.00%
Past Incidents (30d)
11
Error rate (24h)
0.0%
Is Anthropic Claude Down Now?
Last 30 days
21/30 days operational | 70.00% uptime
30 days ago
Today
Operational
Degraded / Partial
Outage
Endpoint & Model ID
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Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
The issue affecting Claude services has been resolved. Impact occurred from 13:57 to 14:20 UTC
Elevated latency on the Claude API for some users
The issue affecting Claude services has been mitigated.
Elevated errors for multiple models
The issue affecting Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 has been resolved. Impact has ended as of 9:16 PT / 16:16 UTC.
Elevated errors for Claude Sonnet 5
This incident has been resolved.
Elevated errors for Claude Sonnet 5
The issue affecting Claude Sonnet 5 has been resolved. Impact occurred from 2:05pm PT / 21:05 UTC to 2:19pm PT / 21:19 UTC.
Elevated errors for multiple models
This issue has been resolved. From 9:50pm PT / 04:50 UTC through 00:36am PT / 07:36 UTC, users saw elevated errors on requests to Claude models, including Claude Opus 5 and Fable 5.
Elevated errors on requests to multiple models
This issue has been resolved.
One API, every model, automatic failover.
When Anthropic goes down, LLMAPI reroutes your requests to another provider with an equivalent model in the same tier — no code changes, no downtime.
