Service comparison

ChatGPT vs. DeepSeek

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

Last 90 days · 74 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

ChatGPT

chatgpt.com

Ongoing incident
- 90-day uptime
  
  85.61%
- Incidents (90d)
  
  65
  
  7 major · 58 minor
- Median resolution
  
  1h 29m
- Longest outage
  
  139h
View status page →
DeepSeek

deepseek.com

Online
- 90-day uptime
  
  99.14%
- Incidents (90d)
  
  9
  
  6 major · 3 minor
- Median resolution
  
  1h 3m
- Longest outage
  
  10h 13m
View status page →

Uptime over time

Availability across windows

Window	ChatGPT	DeepSeek	Δ
Last 24 hours	100.00%	100.00%	0.00 pp
Last 7 days	93.89%	100.00%	-6.11 pp
Last 30 days	90.10%	100.00%	-9.90 pp
Last 90 days	85.61%	99.14%	-13.53 pp

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

Incidents 90-day

Severity breakdown

ChatGPT

65 total

7 major 58 minor
- Median resolution
  
  1h 29m
- Longest outage
  
  139h
DeepSeek

9 total

6 major 3 minor
- Median resolution
  
  1h 3m
- Longest outage
  
  10h 13m

Recent activity

Last 5 incidents, side-by-side

ChatGPT
- Jun 19
  
  chatgpt.com access issues
  
  1h 43m
  
  Minor
- Jun 18
  
  SSO login errors for some ChatGPT Enterprise workspaces
  
  2h 59m
  
  Minor
- Jun 18
  
  ChatGPT failing to load or save
  
  28m
  
  Minor
- Jun 17
  
  Errors with conversations on Android and iOS devices
  
  1h 2m
  
  Major
- Jun 16
  
  Codex "Selected Model is at Capacity" Error
  
  3h 16m
  
  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 85.61% vs. 99.14% for DeepSeek (Δ -13.53 pp). Incidents: 65 vs. 9 (+56).

Also compare

Other ChatGPT comparisons

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