Service comparison

Vercel vs. Fly.io

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

Last 90 days · 114 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

Vercel

vercel.com

Online
- 90-day uptime
  
  95.11%
- Incidents (90d)
  
  48
  
  7 major · 41 minor
- Median resolution
  
  58m
- Longest outage
  
  12h 39m
View status page →
Fly.io

fly.io

Online
- 90-day uptime
  
  87.66%
- Incidents (90d)
  
  66
  
  30 major · 36 minor
- Median resolution
  
  1h 36m
- Longest outage
  
  46h 6m
View status page →

Uptime over time

Availability across windows

Window	Vercel	Fly.io	Δ
Last 24 hours	97.92%	100.00%	-2.08 pp
Last 7 days	97.20%	97.86%	-0.66 pp
Last 30 days	97.52%	87.09%	+10.43 pp
Last 90 days	95.11%	87.66%	+7.45 pp

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

Incidents 90-day

Severity breakdown

Vercel

48 total

7 major 41 minor
- Median resolution
  
  58m
- Longest outage
  
  12h 39m
Fly.io

66 total

30 major 36 minor
- Median resolution
  
  1h 36m
- Longest outage
  
  46h 6m

Recent activity

Last 5 incidents, side-by-side

Vercel
- Jul 15
  
  Errors accessing teams that require 2FA
  
  30m
  
  Minor
- Jul 10
  
  Increased Build failure rates
  
  2h 6m
  
  Minor
- Jul 10
  
  Erroneous budget notifications
  
  3h 20m
  
  Minor
- Jul 9
  
  Delays loading Build Logs
  
  < 1m
  
  Minor
- Jul 8
  
  Delays Processing Builds
  
  1h 8m
  
  Minor
View all incidents →
Fly.io
- Jul 14
  
  Partial outage in SJC
  
  2h 7m
  
  Major
- Jul 13
  
  Some DFW hosts offline
  
  33m
  
  Minor
- Jul 9
  
  Registry performance issues
  
  31m
  
  Minor
- Jul 9
  
  Delays starting Depot Builders in IAD
  
  56m
  
  Minor
- Jul 3
  
  Partial Outage in ORD
  
  1h 11m
  
  Major
View all incidents →

Bottom line

Vercel wins

Vercel edges out on 90-day uptime.

Vercel posted 95.11% vs. 87.66% for Fly.io (Δ +7.45 pp). Incidents: 48 vs. 66 (-18).

Also compare

Other Vercel comparisons

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