Service comparison

OpenAI vs. Claude

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

Last 90 days · 227 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

OpenAI

openai.com

Ongoing incident
- 90-day uptime
  
  61.20%
- Incidents (90d)
  
  95
  
  12 major · 83 minor
- Median resolution
  
  1h 44m
- Longest outage
  
  264h 55m
View status page →
Claude

claude.ai

Ongoing incident
- 90-day uptime
  
  69.36%
- Incidents (90d)
  
  132
  
  37 major · 95 minor
- Median resolution
  
  59m
- Longest outage
  
  450h 35m
View status page →

Uptime over time

Availability across windows

Window	OpenAI	Claude	Δ
Last 24 hours	98.61%	88.82%	+9.79 pp
Last 7 days	93.91%	90.63%	+3.28 pp
Last 30 days	80.41%	85.34%	-4.93 pp
Last 90 days	61.20%	69.36%	-8.16 pp

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

Incidents 90-day

Severity breakdown

OpenAI

95 total

12 major 83 minor
- Median resolution
  
  1h 44m
- Longest outage
  
  264h 55m
Claude

132 total

37 major 95 minor
- Median resolution
  
  59m
- Longest outage
  
  450h 35m

Recent activity

Last 5 incidents, side-by-side

OpenAI
- Aug 18
  
  Elevated errors deploying Sites
  
  20m
  
  Minor
- Aug 14
  
  Unexpected GPT-5.6 Terra responses
  
  Ongoing
  
  Minor
- Aug 13
  
  Elevated errors in ChatGPT conversations for Free users
  
  8h 38m
  
  Minor
- Aug 13
  
  Error while creating custom RBAC roles for Enterprise users
  
  8h 23m
  
  Minor
- Aug 11
  
  Increase in errors on API, Codex and Work Mode
  
  1h 7m
  
  Minor
View all incidents →
Claude
- Aug 19
  
  Degraded performance for Claude Opus 5 and Claude Haiku 4.5
  
  Ongoing
  
  Minor
- Aug 18
  
  Degraded performance for multiple models
  
  2h 41m
  
  Minor
- Aug 17
  
  Degraded performance for Claude Opus 5, Claude Sonnet 5
  
  1h 32m
  
  Minor
- Aug 16
  
  Service disruption on Claude services
  
  Ongoing
  
  Major
- Aug 16
  
  Service disruption on Claude services
  
  35m
  
  Major
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

OpenAI posted 61.20% vs. 69.36% for Claude (Δ -8.16 pp). Incidents: 95 vs. 132 (-37).

Also compare

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