Claude Code incident history
The last recorded incident affecting Claude Code started on September 15, 2026. Every figure on this page is computed from our archive of Anthropic's public incident reporting.
- Incidents (archive)
- 56
- Last 30 days
- 13
- Median duration
- 1 h 8 min
- Total incident time
- 96 h 26 min
By month
- September 20265 · 5 h 25 min
- August 202620 · 32 h 52 min
- July 202631 · 58 h 9 min
Incidents affecting Claude Code
- September 15, 2026Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1Major · 1 h 26 min
- September 11, 2026Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1Major · 17 min
- September 3, 2026Elevated errors for multiple modelsMajor · 2 h 57 min
- September 3, 2026Elevated errors for Claude Sonnet 5Major · 19 min
- September 2, 2026Elevated errors for Claude Sonnet 5Major · 26 min
- August 31, 2026Degraded performance on claude.ai and Claude CodeMinor · 1 h 14 min
- August 28, 2026Elevated errors on Claude Code and Claude CoworkMajor · 2 h 59 min
- August 24, 2026Issues logging into Claude.aiMinor · 15 min
- August 24, 2026Elevated errors for multiple modelsMajor · 3 h 24 min
- August 20, 2026Elevated errors on requests to multiple modelsMajor · 26 min
- August 20, 2026Elevated errors on Google connectorsMinor · 29 min
- August 19, 2026Degraded performance for Claude Opus 5 and Claude Haiku 4.5Minor · 1 h 20 min
- August 18, 2026Degraded performance for multiple modelsMinor · 2 h 41 min
- August 17, 2026Degraded performance for Claude Opus 5, Claude Sonnet 5Minor · 1 h 33 min
- August 16, 2026Service disruption on Claude servicesMajor · Ongoing
- August 16, 2026Service disruption on Claude servicesCritical · 36 min
- August 14, 2026Service disruption on Claude servicesMajor · 1 h 28 min
- August 13, 2026Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5Major · 1 h 35 min
- August 12, 2026Degraded performance for multiple modelsMinor · 4 h 17 min
- August 5, 2026Degraded performance for Claude Opus 5Minor · 43 min
- August 5, 2026Degraded performance of multiple modelsMinor · 7 h 9 min
- August 4, 2026Elevated errors on Claude Sonnet 5Minor · 25 min
- August 4, 2026Elevated errors on Claude Sonnet 5Minor · 39 min
- August 3, 2026Degraded performance on Claude Sonnet 5Minor · 15 min
- August 3, 2026Error rates across multiple modelsMinor · 1 h 24 min
- July 31, 2026Degraded performance on Claude Sonnet 5Minor · 47 min
- July 30, 2026Degraded performance on Claude Opus 4.8Minor · 41 min
- July 30, 2026Elevated errors across many modelsMajor · 4 h 51 min
- July 27, 2026Elevated errors on Claude Opus 5 and Haiku 4.5Minor · 57 min
- July 27, 2026Elevated errors on Claude Opus 5Minor · 1 h 3 min
- July 27, 2026Elevated errors on Claude Opus 5Minor · 48 min
- July 26, 2026Elevated errors for Opus 5Major · 1 h 27 min
- July 25, 2026Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other modelsMajor · 34 min
- July 25, 2026Elevated errors for Mythos 5, Fable 5, Opus 5 and Claude Haiku 4.5Major · 1 h 4 min
- July 24, 2026Elevated error rate on Opus 4.8Minor · 1 h 12 min
- July 22, 2026Elevated errors on Haiku 4.5Minor · 17 min
- July 22, 2026Elevated error rates for Sonnet 5Minor · 48 min
- July 22, 2026Elevated errors on Opus 4.8 and Haiku 4.5Minor · 1 h 46 min
- July 22, 2026Elevated errors for Claude Opus 4.1Minor · 26 min
- July 21, 2026Service disruption on Claude servicesCritical · 23 min
- July 21, 2026Elevated errors on several modelsCritical · 2 h 44 min
- July 21, 2026Elevated errors on Haiku 4.5Major · 3 h 34 min
- July 21, 2026Elevated errors across Fable 5Minor · 48 min
- July 21, 2026Elevated errors across modelsMinor · 1 h 8 min
- July 21, 2026Elevated errors on Haiku 4.5Minor · 1 h 41 min
- July 20, 2026Elevated errors for Claude Opus 4.8Minor · 1 h 35 min
- July 20, 2026Elevated errors on Haiku 4.5Minor · 2 h 20 min
- July 20, 2026Fable 5 requiring usage credits on Max plansMinor · 8 h
- July 20, 2026Elevated error rates for Opus 4.5Minor · 5 h 44 min
- July 17, 2026Elevated errors across Fable 5Major · 1 h 11 min
- July 17, 2026Elevated error rates for Sonnet 5Major · 15 min
- July 17, 2026Elevated errors for Claude Opus 4.8Minor · 36 min
- July 17, 2026Elevated errors on Sonnet 5 and Haiku 4.5Minor · 5 h 34 min
- July 16, 2026Elevated errors for Claude Opus 4.7Minor · 4 h 33 min
- July 16, 2026Elevated errors on Claude Sonnet 5Minor · 15 min
- July 15, 2026Elevated errors on multiple modelsMinor · 1 h 7 min
How this is counted
- Source. Anthropic's public incident reporting for Claude. We do not probe, ping or measure the services ourselves, so nothing here is an availability measurement.
- What we count. Minutes of the month that fell inside a recorded incident window for that component — from the reported start to the reported resolution, clipped to the month.
- What we do not count. Severity is ignored: an incident logged as degraded performance counts the same as a full outage. Unreported disruption, regional differences and per-user impact are invisible to us. An incident window is not the same thing as downtime.
- Overlaps. Figures are per component only, never aggregated into one service-level number. Within a component, overlapping incidents count the shared minutes once; the same minute can appear under several components when an incident affected several.
Computed from our incident archive, which starts on — 63 days deep.