Service comparison

Claude vs. OpenAI

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

Last 90 days · 195 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

Claude

claude.ai

Major outage
- 90-day uptime
  
  70.48%
- Incidents (90d)
  
  114
  
  34 major · 80 minor
- Median resolution
  
  1h 2m
- Longest outage
  
  450h 35m
View status page →
OpenAI

openai.com

Ongoing incident
- 90-day uptime
  
  62.61%
- Incidents (90d)
  
  81
  
  12 major · 69 minor
- Median resolution
  
  2h 7m
- Longest outage
  
  264h 55m
View status page →

Uptime over time

Availability across windows

Window	Claude	OpenAI	Δ
Last 24 hours	100.00%	100.00%	0.00 pp
Last 7 days	95.85%	92.30%	+3.55 pp
Last 30 days	95.38%	90.04%	+5.34 pp
Last 90 days	70.48%	62.61%	+7.87 pp

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

Incidents 90-day

Severity breakdown

Claude

114 total

34 major 80 minor
- Median resolution
  
  1h 2m
- Longest outage
  
  450h 35m
OpenAI

81 total

12 major 69 minor
- Median resolution
  
  2h 7m
- Longest outage
  
  264h 55m

Recent activity

Last 5 incidents, side-by-side

Claude
- Sep 3
  
  Elevated errors for multiple models
  
  2h 57m
  
  Major
- Sep 3
  
  Elevated errors for Claude Sonnet 5
  
  18m
  
  Major
- Sep 2
  
  Elevated errors for Claude Sonnet 5
  
  26m
  
  Major
- Sep 1
  
  Delays in credit purchases
  
  1h 57m
  
  Minor
- Sep 1
  
  Degraded performance on platform.claude.com and Claude for Microsoft Office 365
  
  1h 1m
  
  Minor
View all incidents →
OpenAI
- Sep 4
  
  Users in APAC region may face increased error in ChatGPT, Work, image generation, file upload, Voice, and Codex Cloud
  
  3h 46m
  
  Minor
- Sep 3
  
  Elevated errors across ChatGPT and Codex
  
  1h 57m
  
  Minor
- Sep 3
  
  ChatGPT Work Mode High Error Rates
  
  6m
  
  Major
- Sep 2
  
  Elevated errors creating new accounts
  
  31m
  
  Minor
- Sep 1
  
  Elevated errors in ChatGPT conversations for Free and Go plans
  
  21m
  
  Minor
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

Claude posted 70.48% vs. 62.61% for OpenAI (Δ +7.87 pp). Incidents: 114 vs. 81 (+33).

Also compare

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