Service comparison

ChatGPT vs. DeepSeek

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

Last 90 days · 96 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

ChatGPT

chatgpt.com

Ongoing incident
- 90-day uptime
  
  61.80%
- Incidents (90d)
  
  96
  
  12 major · 84 minor
- Median resolution
  
  1h 47m
- Longest outage
  
  264h 55m
View status page →
DeepSeek

deepseek.com

Online
- 90-day uptime
  
  100.00%
- Incidents (90d)
  
  0
  
  0 major · 0 minor
- Median resolution
  
  —
- Longest outage
  
  —
View status page →

Uptime over time

Availability across windows

Window	ChatGPT	DeepSeek	Δ
Last 24 hours	85.69%	100.00%	-14.31 pp
Last 7 days	94.98%	100.00%	-5.02 pp
Last 30 days	82.71%	100.00%	-17.29 pp
Last 90 days	61.80%	100.00%	-38.20 pp

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

Incidents 90-day

Severity breakdown

ChatGPT

96 total

12 major 84 minor
- Median resolution
  
  1h 47m
- Longest outage
  
  264h 55m
DeepSeek

0 total

0 major 0 minor
- Median resolution
  
  —
- Longest outage
  
  —

Recent activity

Last 5 incidents, side-by-side

ChatGPT
- Aug 21
  
  Unexpected logouts for some ChatGPT web users
  
  3h 26m
  
  Minor
- Aug 20
  
  Elevated Codex API authentication errors
  
  53m
  
  Minor
- Aug 20
  
  Elevated Errors for Thinking mode in ChatGPT
  
  2h 55m
  
  Minor
- Aug 20
  
  Chatgpt.com is down - all signups and logins are down as of right now
  
  52m
  
  Minor
- Aug 18
  
  Elevated errors deploying Sites
  
  20m
  
  Minor
View all incidents →
DeepSeek
- May 8
  
  【已恢复】DeepSeek 网页/API不可用（[Resolved]DeepSeek Web/API Service Not Available）
  
  33m
  
  Major
- May 6
  
  【已恢复】DeepSeek 网页/API 性能异常（[Resolved]DeepSeek Web/API Service Degraded Performance）
  
  6m
  
  Minor
- May 6
  
  【已恢复】DeepSeek 网页/API 性能异常（[Resolved]DeepSeek Web/API Service Degraded Performance）
  
  11m
  
  Major
- Apr 22
  
  【已恢复】DeepSeek API 异常（[Resolved]DeepSeek API Abnormal）
  
  1h 3m
  
  Major
- Apr 20
  
  【已解决】DeepSeek Web/APP 快速模式性能异常（[Resolved]DeepSeek Web/APP Instant Mode Performance Abnormal）
  
  3h 28m
  
  Minor
View all incidents →

Bottom line

DeepSeek wins

DeepSeek edges out on 90-day uptime.

ChatGPT posted 61.80% vs. 100.00% for DeepSeek (Δ -38.20 pp). Incidents: 96 vs. 0 (+96).

Also compare

Other ChatGPT comparisons

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