Service comparison

ChatGPT vs. DeepSeek

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

Last 90 days · 55 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

ChatGPT

chatgpt.com

Online
- 90-day uptime
  
  87.15%
- Incidents (90d)
  
  43
  
  5 major · 38 minor
- Median resolution
  
  1h 39m
- Longest outage
  
  139h
View status page →
DeepSeek

deepseek.com

Online
- 90-day uptime
  
  99.04%
- Incidents (90d)
  
  12
  
  8 major · 4 minor
- Median resolution
  
  54m
- Longest outage
  
  10h 13m
View status page →

Uptime over time

Availability across windows

Window	ChatGPT	DeepSeek	Δ
Last 24 hours	95.00%	100.00%	-5.00 pp
Last 7 days	78.24%	100.00%	-21.76 pp
Last 30 days	76.60%	99.88%	-23.28 pp
Last 90 days	87.15%	99.04%	-11.89 pp

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

Incidents 90-day

Severity breakdown

ChatGPT

43 total

5 major 38 minor
- Median resolution
  
  1h 39m
- Longest outage
  
  139h
DeepSeek

12 total

8 major 4 minor
- Median resolution
  
  54m
- Longest outage
  
  10h 13m

Recent activity

Last 5 incidents, side-by-side

ChatGPT
- Jun 2
  
  Guest users are experiencing elevated error rate when using ChatGPT conversations.
  
  1h 12m
  
  Minor
- Jun 1
  
  Decreased ChatGPT availability for Free users
  
  1h 2m
  
  Major
- May 29
  
  Users May Experience Issues Accessing ChatGPT
  
  8m
  
  Minor
- May 29
  
  Users may encounter issues with conversations
  
  1h 39m
  
  Minor
- May 29
  
  Users may encounter issues logging in or creating an account
  
  1h 44m
  
  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 87.15% vs. 99.04% for DeepSeek (Δ -11.89 pp). Incidents: 43 vs. 12 (+31).

Also compare

Other ChatGPT comparisons

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