Service comparison

Claude vs. ChatGPT

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

Last 90 days · 235 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

Claude

claude.ai

Major outage
- 90-day uptime
  
  68.87%
- Incidents (90d)
  
  141
  
  43 major · 98 minor
- Median resolution
  
  57m
- Longest outage
  
  450h 35m
View status page →
ChatGPT

chatgpt.com

Ongoing incident
- 90-day uptime
  
  60.01%
- Incidents (90d)
  
  94
  
  14 major · 80 minor
- Median resolution
  
  1h 42m
- Longest outage
  
  264h 55m
View status page →

Uptime over time

Availability across windows

Window	Claude	ChatGPT	Δ
Last 24 hours	88.47%	100.00%	-11.53 pp
Last 7 days	75.47%	54.88%	+20.59 pp
Last 30 days	76.83%	46.59%	+30.24 pp
Last 90 days	68.87%	60.01%	+8.86 pp

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

Incidents 90-day

Severity breakdown

Claude

141 total

43 major 98 minor
- Median resolution
  
  57m
- Longest outage
  
  450h 35m
ChatGPT

94 total

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

Recent activity

Last 5 incidents, side-by-side

Claude
- Jul 30
  
  Elevated errors across many models
  
  Ongoing
  
  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
- Jul 27
  
  Elevated errors on Claude Opus 5
  
  1h 2m
  
  Minor
- Jul 27
  
  Elevated errors on Claude Opus 5
  
  48m
  
  Minor
View all incidents →
ChatGPT
- 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
- Jul 27
  
  We’re seeing elevated latency, timeouts, and interrupted streaming across gpt 5.1 mini model and gpt 4.1 mini
  
  36m
  
  Minor
- Jul 25
  
  Elevated errors affecting ChatGPT conversations
  
  1d 18h 22m
  
  Minor
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

Claude posted 68.87% vs. 60.01% for ChatGPT (Δ +8.86 pp). Incidents: 141 vs. 94 (+47).

Also compare

Other Claude comparisons

Monitor any service like this.

Pulsetic watches endpoints from 15+ global regions and alerts you before users notice.

Start monitoring free