Service comparison

Vercel vs. Fly.io

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

Last 90 days · 104 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

Vercel

vercel.com

Online
- 90-day uptime
  
  94.97%
- Incidents (90d)
  
  46
  
  6 major · 40 minor
- Median resolution
  
  58m
- Longest outage
  
  12h 39m
View status page →
Fly.io

fly.io

Ongoing incident
- 90-day uptime
  
  85.80%
- Incidents (90d)
  
  58
  
  25 major · 33 minor
- Median resolution
  
  1h 40m
- Longest outage
  
  77h 53m
View status page →

Uptime over time

Availability across windows

Window	Vercel	Fly.io	Δ
Last 24 hours	100.00%	100.00%	0.00 pp
Last 7 days	99.48%	88.47%	+11.01 pp
Last 30 days	92.81%	84.52%	+8.29 pp
Last 90 days	94.97%	85.80%	+9.17 pp

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

Incidents 90-day

Severity breakdown

Vercel

46 total

6 major 40 minor
- Median resolution
  
  58m
- Longest outage
  
  12h 39m
Fly.io

58 total

25 major 33 minor
- Median resolution
  
  1h 40m
- Longest outage
  
  77h 53m

Recent activity

Last 5 incidents, side-by-side

Vercel
- Jun 1
  
  Elevated Errors Creating New Deployments
  
  40m
  
  Minor
- May 28
  
  Elevated Function Invocation Errors in Stockholm region (ARN1)
  
  59m
  
  Minor
- May 27
  
  Elevated Errors on Vercel Dashboard (Project Overview Page)
  
  11m
  
  Minor
- May 25
  
  Delays Loading Runtime Logs
  
  1h 23m
  
  Minor
- May 23
  
  Elevated Build Failures (GitHub connected projects)
  
  8h
  
  Minor
View all incidents →
Fly.io
- Jun 4
  
  Consul cluster degradation
  
  Ongoing
  
  Minor
- Jun 1
  
  Issues with flyctl ssh console and Machines OIDC
  
  10m
  
  Minor
- May 31
  
  IPv6 outage for some machines in ORD
  
  4h 17m
  
  Major
- May 30
  
  Private networking issues in SYD
  
  8m
  
  Minor
- May 30
  
  Elevated deployment errors
  
  1h 38m
  
  Minor
View all incidents →

Bottom line

Vercel wins

Vercel edges out on 90-day uptime.

Vercel posted 94.97% vs. 85.80% for Fly.io (Δ +9.17 pp). Incidents: 46 vs. 58 (-12).

Also compare

Other Vercel comparisons

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