Service comparison

Claude vs. OpenAI

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

Last 90 days · 147 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

Claude

claude.ai

Online
- 90-day uptime
  
  94.61%
- Incidents (90d)
  
  95
  
  33 major · 62 minor
- Median resolution
  
  45m
- Longest outage
  
  18h 3m
View status page →
OpenAI

openai.com

Ongoing incident
- 90-day uptime
  
  86.59%
- Incidents (90d)
  
  52
  
  6 major · 46 minor
- Median resolution
  
  1h 25m
- Longest outage
  
  139h
View status page →

Uptime over time

Availability across windows

Window	Claude	OpenAI	Δ
Last 24 hours	86.94%	88.06%	-1.12 pp
Last 7 days	89.69%	91.46%	-1.77 pp
Last 30 days	90.62%	81.38%	+9.24 pp
Last 90 days	94.61%	86.59%	+8.02 pp

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

Incidents 90-day

Severity breakdown

Claude

95 total

33 major 62 minor
- Median resolution
  
  45m
- Longest outage
  
  18h 3m
OpenAI

52 total

6 major 46 minor
- Median resolution
  
  1h 25m
- Longest outage
  
  139h

Recent activity

Last 5 incidents, side-by-side

Claude
- Jun 5
  
  Elevated errors on many Claude models
  
  3h 8m
  
  Major
- Jun 3
  
  Elevated errors on Opus 4.7
  
  28m
  
  Minor
- Jun 3
  
  Issue affecting some Claude Code services
  
  3h 19m
  
  Major
- Jun 2
  
  Elevated errors on multiple models
  
  5h 44m
  
  Major
- Jun 1
  
  Degraded performance for Claude Sonnet 4.6
  
  38m
  
  Minor
View all incidents →
OpenAI
- Jun 5
  
  Voice mode availability impacted
  
  1h 5m
  
  Minor
- Jun 5
  
  Users unable to sign in using Microsoft personal accounts
  
  1h 9m
  
  Minor
- Jun 5
  
  Elevated error rates for Free users in conversations
  
  1h 25m
  
  Minor
- Jun 5
  
  Some users may experience issues accessing OpenAI accounts
  
  Ongoing
  
  Minor
- Jun 4
  
  Image API requests failing with 401s
  
  39m
  
  Minor
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

Claude posted 94.61% vs. 86.59% for OpenAI (Δ +8.02 pp). Incidents: 95 vs. 52 (+43).

Also compare

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