Claude Sonnet 4.5 Experiencing Elevated Errors — Status Update
An official system status update reports elevated errors on Claude Sonnet 4.5, triggered on 2026-04-28 at 13:29:56 UTC. The incident is documented on the Claude status page and is being discussed in the community megathread.
Status Details
- Service affected: Claude Sonnet 4.5
- Issue type: Elevated errors
- Reported at: 2026-04-28T13:29:56Z
- Auto-post triggered: Within 2 minutes of the official update
Where to Track Progress
- Official status page: https://status.claude.com/incidents/x1y91zcb2rp2
- Community megathread: Claude Performance and Bugs Megathread on r/ClaudeAI
If you are encountering errors when using Claude Sonnet 4.5, this incident is likely the cause. Check the status page for resolution updates, or join the megathread to see reports from other users.
📖 Read the full source: r/ClaudeAI
👀 See Also
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Claude Code v2.1.203: Major Bugfix Release with Background Session Recovery and Performance Improvements
Claude Code v2.1.203 fixes background session stalls on macOS, token expiration recovery, PATH inheritance issues, and reduces binary size by 7 MB with startup memory savings.
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EFF: Trump Admin Retaliated Against Anthropic for Refusing Autonomous Weapons Work
The Pentagon retaliated against Anthropic for refusing to let its models be used for autonomous weapons or mass surveillance, violating the First Amendment per EFF.