Service comparison

Claude vs. ChatGPT

Claude vs. ChatGPT — reliability, API availability, and incident frequency head-to-head.

Last 90 days · 125 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

Claude

claude.ai

Online
- 90-day uptime
  
  95.44%
- Incidents (90d)
  
  84
  
  29 major · 55 minor
- Median resolution
  
  45m
- Longest outage
  
  18h 3m
View status page →
ChatGPT

chatgpt.com

Online
- 90-day uptime
  
  87.26%
- Incidents (90d)
  
  41
  
  4 major · 37 minor
- Median resolution
  
  1h 40m
- Longest outage
  
  139h
View status page →

Uptime over time

Availability across windows

Window	Claude	ChatGPT	Δ
Last 24 hours	97.64%	72.50%	+25.14 pp
Last 7 days	95.67%	68.27%	+27.40 pp
Last 30 days	91.94%	63.93%	+28.01 pp
Last 90 days	95.44%	87.26%	+8.18 pp

Δ is percentage-point difference (Claude minus ChatGPT). Higher is better.

Incidents 90-day

Severity breakdown

Claude

84 total

29 major 55 minor
- Median resolution
  
  45m
- Longest outage
  
  18h 3m
ChatGPT

41 total

4 major 37 minor
- Median resolution
  
  1h 40m
- Longest outage
  
  139h

Recent activity

Last 5 incidents, side-by-side

Claude
- May 29
  
  Elevated errors on Claude Opus 4.8
  
  15m
  
  Minor
- May 28
  
  Billing and subscription management issues
  
  19m
  
  Minor
- May 28
  
  Elevated errors on Claude Opus 4.7
  
  39m
  
  Major
- May 27
  
  Elevated errors on Claude Opus 4.7
  
  1h 37m
  
  Major
- May 27
  
  Elevated errors on Claude Opus 4.7
  
  57m
  
  Major
View all incidents →
ChatGPT
- May 29
  
  Users May Experience Issues Accessing ChatGPT
  
  8m
  
  Minor
- May 29
  
  Users may encounter issues with conversations
  
  1h 39m
  
  Minor
- May 29
  
  Users may encounter issues logging in or creating an account
  
  1h 44m
  
  Minor
- May 28
  
  Business plan subscription checkout issues on web and mobile web
  
  4h 43m
  
  Minor
- May 28
  
  Subscription checkout failing
  
  4h 7m
  
  Minor
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

Claude posted 95.44% vs. 87.26% for ChatGPT (Δ +8.18 pp). Incidents: 84 vs. 41 (+43).

Also compare

Other Claude comparisons

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