Service comparison

OpenAI vs. Claude

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

Last 90 days · 187 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

OpenAI

openai.com

Ongoing incident
- 90-day uptime
  
  85.61%
- Incidents (90d)
  
  65
  
  7 major · 58 minor
- Median resolution
  
  1h 29m
- Longest outage
  
  139h
View status page →
Claude

claude.ai

Major outage
- 90-day uptime
  
  93.16%
- Incidents (90d)
  
  122
  
  38 major · 84 minor
- Median resolution
  
  50m
- Longest outage
  
  18h 3m
View status page →

Uptime over time

Availability across windows

Window	OpenAI	Claude	Δ
Last 24 hours	92.85%	93.33%	-0.48 pp
Last 7 days	92.63%	91.38%	+1.25 pp
Last 30 days	87.16%	91.39%	-4.23 pp
Last 90 days	85.61%	93.16%	-7.55 pp

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

Incidents 90-day

Severity breakdown

OpenAI

65 total

7 major 58 minor
- Median resolution
  
  1h 29m
- Longest outage
  
  139h
Claude

122 total

38 major 84 minor
- Median resolution
  
  50m
- Longest outage
  
  18h 3m

Recent activity

Last 5 incidents, side-by-side

OpenAI
- Jun 19
  
  chatgpt.com access issues
  
  1h 43m
  
  Minor
- Jun 18
  
  SSO login errors for some ChatGPT Enterprise workspaces
  
  2h 59m
  
  Minor
- Jun 18
  
  ChatGPT failing to load or save
  
  28m
  
  Minor
- Jun 17
  
  Errors with conversations on Android and iOS devices
  
  1h 2m
  
  Major
- Jun 16
  
  Codex "Selected Model is at Capacity" Error
  
  3h 16m
  
  Minor
View all incidents →
Claude
- Jun 19
  
  Elevated error rates on the Claude API
  
  27m
  
  Minor
- Jun 19
  
  Elevated errors for Claude Opus 4.8
  
  1h 9m
  
  Minor
- Jun 18
  
  Service disruption on Claude services
  
  37m
  
  Major
- Jun 17
  
  Elevated errors for Claude Opus 4.8
  
  53m
  
  Minor
- Jun 17
  
  Elevated errors for Claude Opus 4.8
  
  1h 38m
  
  Minor
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

OpenAI posted 85.61% vs. 93.16% for Claude (Δ -7.55 pp). Incidents: 65 vs. 122 (-57).

Also compare

Other OpenAI comparisons

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