Service comparison

ChatGPT vs. Claude

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

Last 90 days · 210 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

ChatGPT

chatgpt.com

Online
- 90-day uptime
  
  59.44%
- Incidents (90d)
  
  77
  
  9 major · 68 minor
- Median resolution
  
  1h 40m
- Longest outage
  
  264h 55m
View status page →
Claude

claude.ai

Online
- 90-day uptime
  
  71.82%
- Incidents (90d)
  
  133
  
  37 major · 96 minor
- Median resolution
  
  51m
- Longest outage
  
  450h 35m
View status page →

Uptime over time

Availability across windows

Window	ChatGPT	Claude	Δ
Last 24 hours	76.53%	100.00%	-23.47 pp
Last 7 days	23.16%	79.63%	-56.47 pp
Last 30 days	19.77%	32.46%	-12.69 pp
Last 90 days	59.44%	71.82%	-12.38 pp

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

Incidents 90-day

Severity breakdown

ChatGPT

77 total

9 major 68 minor
- Median resolution
  
  1h 40m
- Longest outage
  
  264h 55m
Claude

133 total

37 major 96 minor
- Median resolution
  
  51m
- Longest outage
  
  450h 35m

Recent activity

Last 5 incidents, side-by-side

ChatGPT
- Jul 12
  
  Elevated conversation and login errors on ChatGPT for iOS and macOS
  
  5h 38m
  
  Minor
- Jul 11
  
  Elevated Errors for Sora API
  
  28m
  
  Major
- Jul 10
  
  OpenAI website and Help Center content may be unavailable
  
  1h 54m
  
  Minor
- Jul 9
  
  Users are experiencing elevated errors when selecting models
  
  58m
  
  Minor
- Jul 7
  
  Elevated errors with image generation in ChatGPT
  
  4h 43m
  
  Minor
View all incidents →
Claude
- Jul 10
  
  Elevated errors for Claude Opus 4.8
  
  25m
  
  Minor
- Jul 10
  
  Elevated errors for Claude Opus 4.5 and Claude Sonnet 4.5
  
  < 1m
  
  Minor
- Jul 9
  
  Elevated errors for Claude Opus 4.8
  
  22m
  
  Major
- Jul 8
  
  Degraded performance for Claude Code on the web, Cowork Remote, Claude Tag, and Claude Code Review sessions
  
  1h 57m
  
  Minor
- Jul 8
  
  Elevated errors on multiple models
  
  3h 4m
  
  Minor
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

ChatGPT posted 59.44% vs. 71.82% for Claude (Δ -12.38 pp). Incidents: 77 vs. 133 (-56).

Also compare

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