Service comparison

OpenAI vs. Claude

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

Last 90 days · 206 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

OpenAI

openai.com

Ongoing incident
- 90-day uptime
  
  70.51%
- Incidents (90d)
  
  74
  
  8 major · 66 minor
- Median resolution
  
  1h 39m
- Longest outage
  
  264h 55m
View status page →
Claude

claude.ai

Online
- 90-day uptime
  
  71.79%
- Incidents (90d)
  
  132
  
  38 major · 94 minor
- Median resolution
  
  53m
- Longest outage
  
  450h 35m
View status page →

Uptime over time

Availability across windows

Window	OpenAI	Claude	Δ
Last 24 hours	95.97%	98.47%	-2.50 pp
Last 7 days	96.62%	79.39%	+17.23 pp
Last 30 days	52.29%	31.73%	+20.56 pp
Last 90 days	70.51%	71.79%	-1.28 pp

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

Incidents 90-day

Severity breakdown

OpenAI

74 total

8 major 66 minor
- Median resolution
  
  1h 39m
- Longest outage
  
  264h 55m
Claude

132 total

38 major 94 minor
- Median resolution
  
  53m
- Longest outage
  
  450h 35m

Recent activity

Last 5 incidents, side-by-side

OpenAI
- Jul 9
  
  Users are experiencing elevated errors when selecting models
  
  58m
  
  Minor
- Jul 7
  
  Elevated errors with image generation in ChatGPT
  
  4h 43m
  
  Minor
- Jul 1
  
  Codex, workspace analytics, conversation search, searching for custom GPTs, ChatGPT user invites, and Compliance Log Platform download endpoint not working in FedRAMP workspaces
  
  Ongoing
  
  Minor
- Jun 27
  
  Issues with ChatGPT Windows desktop app
  
  5h 28m
  
  Minor
- Jun 26
  
  Codex Usage Limits Depleting Faster Than Expected
  
  3d 2m
  
  Minor
View all incidents →
Claude
- Jul 9
  
  Elevated errors for Claude Opus 4.8
  
  22m
  
  Major
- Jul 8
  
  Degraded performance for Claude Code on the web, Cowork Remote, Claude Tag, and Claude Code Review sessions
  
  1h 57m
  
  Minor
- Jul 8
  
  Elevated errors on multiple models
  
  3h 4m
  
  Minor
- Jul 8
  
  Issues authorizing to MCP Servers
  
  7h
  
  Minor
- Jul 8
  
  Elevated errors on Claude Sonnet 5
  
  14m
  
  Minor
View all incidents →

Bottom line

Claude wins

Claude edges out on 90-day uptime.

OpenAI posted 70.51% vs. 71.79% for Claude (Δ -1.28 pp). Incidents: 74 vs. 132 (-58).

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