Elevated errors for multiple models
claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
Started:
Last official update:
Resolved:
Published incident duration: 177 minutes.
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.
Read the full official incident ↗
MiniCrafts groups the provider's published notice by affected product. Unconfirmed scope stays unconfirmed. Published incident duration is not a measurement of downtime for every user.
What to do
Switch to ChatGPT, Gemini or a local model until Claude recovers.
Check current product status and troubleshoot · Usage limits and reset rules
Official update timeline
- · resolved
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.
- · monitoring
A fix has been deployed for Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and we are monitoring for recovery.
- · identified
The only affected models right now are Opus 4.8 and Opus 5. The rest of the models have recovered to baseline error rate.
- · identified
We are continuing to work on a fix for this issue.
- · identified
An exhaustive list of affected models: Mythos/Fable 5.1, Mythos/Fable 5, Opus 5, Opus 4.8, Opus 4.6.
- · identified
We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.
- · investigating
We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.