Service comparison

ChatGPT vs. Claude

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

Last 90 days · 237 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

ChatGPT

chatgpt.com

Ongoing incident
- 90-day uptime
  
  60.00%
- Incidents (90d)
  
  94
  
  14 major · 80 minor
- Median resolution
  
  1h 42m
- Longest outage
  
  264h 55m
View status page →
Claude

claude.ai

Online
- 90-day uptime
  
  68.58%
- Incidents (90d)
  
  143
  
  43 major · 100 minor
- Median resolution
  
  57m
- Longest outage
  
  450h 35m
View status page →

Uptime over time

Availability across windows

Window	ChatGPT	Claude	Δ
Last 24 hours	100.00%	100.00%	0.00 pp
Last 7 days	74.72%	92.10%	-17.38 pp
Last 30 days	52.94%	81.11%	-28.17 pp
Last 90 days	60.00%	68.58%	-8.58 pp

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

Incidents 90-day

Severity breakdown

ChatGPT

94 total

14 major 80 minor
- Median resolution
  
  1h 42m
- Longest outage
  
  264h 55m
Claude

143 total

43 major 100 minor
- Median resolution
  
  57m
- Longest outage
  
  450h 35m

Recent activity

Last 5 incidents, side-by-side

ChatGPT
- Jul 31
  
  Enterprise & Education Chat Errors
  
  24m
  
  Minor
- Jul 30
  
  Elevated errors affecting ChatGPT conversations
  
  1h 25m
  
  Minor
- Jul 29
  
  Elevated error rates with the invalid_prompt error code
  
  1h 24m
  
  Minor
- Jul 28
  
  Elevated Image Generation Error Rate in ChatGPT
  
  35m
  
  Minor
- Jul 27
  
  Image generation unavailable in ChatGPT
  
  1h 19m
  
  Minor
View all incidents →
Claude
- Jul 31
  
  Degraded performance on Claude Sonnet 5
  
  46m
  
  Minor
- Jul 30
  
  Degraded performance on Claude Opus 4.8
  
  40m
  
  Minor
- Jul 30
  
  Elevated errors across many models
  
  4h 51m
  
  Major
- Jul 29
  
  Elevated errors across all models
  
  2h 46m
  
  Major
- Jul 27
  
  Elevated errors on Claude Opus 5 and Haiku 4.5
  
  56m
  
  Minor
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

ChatGPT posted 60.00% vs. 68.58% for Claude (Δ -8.58 pp). Incidents: 94 vs. 143 (-49).

Also compare

Other ChatGPT comparisons

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