Claude outage: Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other models

Affected components

• Claude API (api.anthropic.com)
• Claude Code
• Claude Cowork
• claude.ai

1. resolvedJul 25, 2026, 22:08 UTC

   This incident has been resolved.

2. investigatingJul 25, 2026, 21:34 UTC

   We are investigating elevated errors on requests to Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Claude's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

• Twilio: Voice Call Failures from Twilio Phone Numbers to Reliance Jio IndiaMinor · Jul 17, 2026, 15:54 UTC
• Twilio: SMS Delivery Receipt Delays from Twilio to Claro GuatemalaMinor · Jul 24, 2026, 23:13 UTC
• Twilio: SMS Delivery Failures from Network Subscribers to a Subset of Twilio United States Short CodesMinor · Jul 25, 2026, 00:46 UTC

How often does Claude have incidents?

Claude reported 85 incidents in the last 90 days, 32 of them major or critical. A typical incident lasted 1h 7m. See Claude's uptime and incident history