Uptime50%
35.1
Claude status & reliability
Anthropic
AI safety company founded by ex-OpenAI researchers Dario and Daniela Amodei. Builds the Claude family of large language models with a focus on steerability, interpretability, and reducing harmful outputs.
Reliability — last 90d
Composite Score
0.0/100
uptime · freq · sev · mttr
▼ 60.4 vs prior 90d
Uptime
0.00%
critical + 0.3 × major (Statuspage formula)
Incidents
0
top type: elevated errors
Median MTTR
1h 11m
bad day: 5h 34m
Component
Incidents
Down (attr.)
Median MTTR
Last
Frequency20%
72.6
Severity20%
17.3
MTTR10%
40.8
SLA Compliance
How often does this provider clear their stated availability target?
Anthropic Commercial Terms · 99.90% · source ↗
✕ last 90d95.73%-4.17%
Met SLA in 1 of 13 weeks (8%)
13 weeks on record
Method: a rolling quarter (13 weeks ≈ 91 days). Each cell is one 7-day slice of Statuspage-standard uptime (1 − (critical + 0.3 × major) / window; minors and maintenance excluded; red when the slice dips below the stated SLA).
MinorMajorCritical
Total 75 incidents
Elevated errors
61%
Degraded
23%
Other
11%
Latency
3%
Auth & login
1%
Integrations
1%
S
Sunday09:00–10:00 UTC
1incident
1 major
- Elevated errors for Opus 5Jul 26
Sunday21:00–22:00 UTC
1incident
1 critical
- Service disruption on Claude servicesAug 16
2
M
Monday05:00–06:00 UTC
1incident
1 major
- Elevated errors for multiple modelsAug 24
Monday07:00–08:00 UTC
2incidents
2 minor
- Fable 5 requiring usage credits on Max plansJul 20
- Elevated error rates for Opus 4.5Jul 20
Monday08:00–09:00 UTC
1incident
1 minor
- Elevated errors on Claude Opus 5Jul 27
Monday11:00–12:00 UTC
1incident
1 minor
- Elevated errors on Claude Opus 5Jul 27
Monday12:00–13:00 UTC
1incident
1 minor
- Error rates across multiple modelsAug 3
Monday13:00–14:00 UTC
4incidents
1 major3 minor
- Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1Oct 5
- Degraded performance for Claude Opus 5, Claude Sonnet 5Aug 17
- Elevated errors on Claude Opus 5 and Haiku 4.5Jul 27
- + 1 more
Monday14:00–15:00 UTC
1incident
1 minor
- Elevated errors for Claude Opus 4.8Jul 20
Monday15:00–16:00 UTC
1incident
1 minor
- Degraded performance on Claude Sonnet 5Aug 3
Monday17:00–18:00 UTC
2incidents
2 minor
- Degraded performance on claude.aiAug 31
- Errors logging into Claude.aiAug 24
Monday19:00–20:00 UTC
1incident
1 minor
- Degraded performance on claude.ai and Claude CodeAug 31
Monday20:00–21:00 UTC
1incident
1 minor
- Issues logging into Claude.aiAug 24
16
T
Tuesday00:00–01:00 UTC
1incident
1 major
- Elevated errors for multiple modelsSep 22
Tuesday06:00–07:00 UTC
1incident
1 minor
- Elevated errors on Claude Sonnet 5Aug 4
Tuesday07:00–08:00 UTC
1incident
1 minor
- Elevated errors on Haiku 4.5Jul 21
Tuesday09:00–10:00 UTC
1incident
1 major
- Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1Sep 15
Tuesday10:00–11:00 UTC
1incident
1 minor
- Elevated errors across modelsJul 21
Tuesday11:00–12:00 UTC
2incidents
2 minor
- Elevated errors on Claude Sonnet 5Aug 4
- Elevated errors across Fable 5Jul 21
Tuesday12:00–13:00 UTC
1incident
1 major
- Elevated errors for Claude Opus 5.5Oct 6
Tuesday13:00–14:00 UTC
1incident
1 major
- Elevated errors on Haiku 4.5Jul 21
Tuesday14:00–15:00 UTC
1incident
1 major
- Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude APISep 29
Tuesday15:00–16:00 UTC
1incident
1 critical
- Elevated errors on several modelsJul 21
Tuesday16:00–17:00 UTC
2incidents
2 minor
- Degraded performance on Claude for Microsoft Office 365Sep 1
- Degraded performance for multiple modelsAug 18
Tuesday17:00–18:00 UTC
2incidents
1 critical1 minor
- Degraded performance on platform.claude.com and Claude for Microsoft Office 365Sep 1
- Service disruption on Claude servicesJul 21
Tuesday20:00–21:00 UTC
1incident
1 major
- Elevated errors across many modelsAug 4
Tuesday23:00–00:00 UTC
1incident
1 minor
- Delays in credit purchasesSep 1
17
W
Wednesday01:00–02:00 UTC
1incident
1 major
- Elevated errors loading usage data on platform.claude.comOct 7
Wednesday07:00–08:00 UTC
1incident
1 minor
- Degraded performance of multiple modelsAug 5
Wednesday08:00–09:00 UTC
1incident
1 minor
- Elevated errors for Claude Opus 4.1Jul 22
Wednesday09:00–10:00 UTC
1incident
1 minor
- Degraded performance for Claude Opus 5 and Claude Haiku 4.5Aug 19
Wednesday13:00–14:00 UTC
4incidents
1 major3 minor
- Elevated errors on platform.claude.comOct 7
- Degraded performance for multiple modelsAug 12
- Degraded performance for Claude Opus 5Aug 5
- + 1 more
Wednesday15:00–16:00 UTC
1incident
1 minor
- Elevated error rates for Sonnet 5Jul 22
Wednesday17:00–18:00 UTC
1incident
1 minor
- Service disruption on Claude ServicesJul 22
Wednesday19:00–20:00 UTC
1incident
1 critical
- Elevated errors across all modelsJul 29
Wednesday21:00–22:00 UTC
1incident
1 major
- Elevated errors for Claude Sonnet 5Sep 2
Wednesday23:00–00:00 UTC
1incident
1 minor
- Elevated errors on Haiku 4.5Jul 22
13
T
Thursday05:00–06:00 UTC
1incident
1 major
- Elevated errors across many modelsJul 30
Thursday08:00–09:00 UTC
2incidents
2 minor
- Elevated errors for Claude Opus 4.7Jul 16
- Elevated errors on Claude Sonnet 5Jul 16
Thursday09:00–10:00 UTC
1incident
1 major
- Enterprise SSO sign-in failuresJul 16
Thursday12:00–13:00 UTC
1incident
1 major
- Elevated errors for Claude Sonnet 5Sep 3
Thursday13:00–14:00 UTC
2incidents
1 major1 minor
- Elevated errors for multiple modelsSep 3
- Degraded performance on Claude Opus 4.8Jul 30
Thursday14:00–15:00 UTC
1incident
1 major
- Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5Aug 13
Thursday15:00–16:00 UTC
1incident
1 major
- Degraded functionality for Claude Cowork on WindowsSep 10
Thursday16:00–17:00 UTC
1incident
1 minor
- Delayed credits on the Claude PlatformOct 1
Thursday18:00–19:00 UTC
2incidents
1 major1 minor
- Elevated errors on Google connectorsAug 20
- Elevated errors for multiple modelsJul 16
Thursday19:00–20:00 UTC
1incident
1 major
- Elevated errors on requests to multiple modelsAug 20
Thursday21:00–22:00 UTC
1incident
1 minor
- Elevated latency on the Claude API for some usersSep 10
14
F
Friday00:00–01:00 UTC
1incident
1 minor
- Service disruption on Claude Code on the web and related servicesAug 14
Friday06:00–07:00 UTC
2incidents
2 minor
- Degraded performance on Claude Sonnet 5Jul 31
- Elevated errors on Sonnet 5 and Haiku 4.5Jul 17
Friday09:00–10:00 UTC
1incident
1 minor
- Elevated error rate on Opus 4.8Jul 24
Friday14:00–15:00 UTC
2incidents
1 major1 minor
- Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1Sep 11
- Elevated errors for Claude Opus 4.8Jul 17
Friday17:00–18:00 UTC
1incident
1 major
- Elevated errors on Claude Code and Claude CoworkAug 28
Friday18:00–19:00 UTC
2incidents
2 major
- Elevated errors across Fable 5Jul 17
- Elevated error rates for Sonnet 5Jul 17
Friday20:00–21:00 UTC
1incident
1 major
- Service disruption on Claude servicesAug 14
Friday23:00–00:00 UTC
1incident
1 major
- Elevated errors for Claude Fable 5Aug 14
11
S
Saturday18:00–19:00 UTC
1incident
1 major
- Elevated errors for Mythos 5, Fable 5, Opus 5 and Claude Haiku 4.5Jul 25
Saturday21:00–22:00 UTC
1incident
1 major
- Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other modelsJul 25
2
00
06
12
18
HOUR OF DAY · UTC75 incident starts · hover any cell for detail
Hottest hour
Monday 13:00 4
Worst day
Tuesday 17
Worst time of day
13:00–14:00 11
Typical fix
1h 11m
half of incidents resolve faster
On a bad day
5h 34m
9 in 10 resolve faster than this
Distribution
<15m
6
15m–1h
28
1–4h
33
4–24h
9
24h+
3
+0 ongoing (not counted above)
MTTR Trend (12 weeks)
Are they recovering faster or slower over time? Lower is better.
4458m worstnow 4458m
12 weeks agodelta +4401m (worse)now
Showing 6 of 200 · 4 of 98 daysLatest first
WED, OCT 72026-10-073 incidents
TUE, OCT 62026-10-061 incident
MON, OCT 52026-10-051 incident
THU, OCT 12026-10-011 incident