Service comparison

Fly.io vs. Vercel

Fly.io vs. Vercel — reliability, API availability, and incident frequency head-to-head.

Last 90 days · 83 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

Fly.io

fly.io

Online
- 90-day uptime
  
  92.73%
- Incidents (90d)
  
  53
  
  19 major · 34 minor
- Median resolution
  
  1h 35m
- Longest outage
  
  45h 16m
View status page →
Vercel

vercel.com

Online
- 90-day uptime
  
  97.09%
- Incidents (90d)
  
  30
  
  11 major · 19 minor
- Median resolution
  
  1h 7m
- Longest outage
  
  22h 48m
View status page →

Uptime over time

Availability across windows

Window	Fly.io	Vercel	Δ
Last 24 hours	100.00%	100.00%	0.00 pp
Last 7 days	99.51%	99.08%	+0.43 pp
Last 30 days	97.16%	98.11%	-0.95 pp
Last 90 days	92.73%	97.09%	-4.36 pp

Δ is percentage-point difference (Fly.io minus Vercel). Higher is better.

Incidents 90-day

Severity breakdown

Fly.io

53 total

19 major 34 minor
- Median resolution
  
  1h 35m
- Longest outage
  
  45h 16m
Vercel

30 total

11 major 19 minor
- Median resolution
  
  1h 7m
- Longest outage
  
  22h 48m

Recent activity

Last 5 incidents, side-by-side

Fly.io
- Sep 12
  
  Network issues in US West Coast
  
  49m
  
  Minor
- Sep 2
  
  Sprites API Partial Outage
  
  1h 37m
  
  Minor
- Sep 2
  
  Upstream network issues
  
  1h 39m
  
  Minor
- Sep 2
  
  API background job queue failure
  
  22m
  
  Major
- Aug 31
  
  HTTP/2 traffic disruptions
  
  < 1m
  
  Minor
View all incidents →
Vercel
- Sep 10
  
  Elevated error rate on Connect and Passport
  
  1h 33m
  
  Major
- Sep 4
  
  Elevated latency in VCR, Blob, and Sandbox API
  
  1h 15m
  
  Minor
- Sep 1
  
  Increased deployment failures
  
  59m
  
  Major
- Aug 26
  
  Failures logging in with Vercel CLI
  
  1h 22m
  
  Major
- Aug 25
  
  Elevated build initialization times
  
  37m
  
  Minor
View all incidents →

Bottom line

Vercel wins

Vercel edges out on 90-day uptime.

Fly.io posted 92.73% vs. 97.09% for Vercel (Δ -4.36 pp). Incidents: 53 vs. 30 (+23).

Also compare

Other Fly.io comparisons

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