Service comparison

ChatGPT vs. DeepSeek

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

Last 90 days · 72 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

ChatGPT

chatgpt.com

Ongoing incident
- 90-day uptime
  
  85.83%
- Incidents (90d)
  
  63
  
  7 major · 56 minor
- Median resolution
  
  1h 26m
- 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	93.75%	100.00%	-6.25 pp
Last 7 days	92.56%	100.00%	-7.44 pp
Last 30 days	87.67%	100.00%	-12.33 pp
Last 90 days	85.83%	99.14%	-13.31 pp

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

Incidents 90-day

Severity breakdown

ChatGPT

63 total

7 major 56 minor
- Median resolution
  
  1h 26m
- 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 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
- Jun 16
  
  Users may experience issue with Codex Cloud tasks
  
  48m
  
  Minor
- Jun 15
  
  FedRAMP workspaces and API orgs have degraded performance
  
  Ongoing
  
  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 85.83% vs. 99.14% for DeepSeek (Δ -13.31 pp). Incidents: 63 vs. 9 (+54).

Also compare

Other ChatGPT comparisons

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