Service comparison

Vercel vs. Fly.io

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

Last 90 days · 108 incidents total · Data via Pulsetic monitoring

Head-to-head

90-day summary

Vercel

vercel.com

Online
- 90-day uptime
  
  95.40%
- Incidents (90d)
  
  39
  
  8 major · 31 minor
- Median resolution
  
  1h 6m
- Longest outage
  
  22h 48m
View status page →
Fly.io

fly.io

Online
- 90-day uptime
  
  87.89%
- Incidents (90d)
  
  69
  
  30 major · 39 minor
- Median resolution
  
  1h 38m
- Longest outage
  
  46h 6m
View status page →

Uptime over time

Availability across windows

Window	Vercel	Fly.io	Δ
Last 24 hours	100.00%	47.99%	+52.01 pp
Last 7 days	100.00%	86.34%	+13.66 pp
Last 30 days	94.80%	94.48%	+0.32 pp
Last 90 days	95.40%	87.89%	+7.51 pp

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

Incidents 90-day

Severity breakdown

Vercel

39 total

8 major 31 minor
- Median resolution
  
  1h 6m
- Longest outage
  
  22h 48m
Fly.io

69 total

30 major 39 minor
- Median resolution
  
  1h 38m
- Longest outage
  
  46h 6m

Recent activity

Last 5 incidents, side-by-side

Vercel
- Jul 25
  
  Vercel Community temporarily unavailable
  
  22h 48m
  
  Minor
- Jul 23
  
  Telemetry data loss for Drains
  
  < 1m
  
  Major
- Jul 23
  
  Timeouts loading charts and observability data in Dashboard
  
  45m
  
  Major
- Jul 23
  
  Dashboard authentication errors
  
  54m
  
  Major
- Jul 17
  
  Increased invocation failures for Hobby Team functions
  
  1h 6m
  
  Minor
View all incidents →
Fly.io
- Aug 4
  
  MPG creation is failing in GRU due to lack of capacity
  
  8h 19m
  
  Major
- Aug 4
  
  Certificate issuance delays
  
  9h 4m
  
  Minor
- Aug 3
  
  Inbound connection failure to Fly Apps
  
  3h 33m
  
  Major
- Aug 1
  
  Managed Postgres v2 control plane issues in iad
  
  1h 28m
  
  Minor
- Jul 31
  
  Capacity issues in CDG
  
  3h 27m
  
  Minor
View all incidents →

Bottom line

Vercel wins

Vercel edges out on 90-day uptime.

Vercel posted 95.40% vs. 87.89% for Fly.io (Δ +7.51 pp). Incidents: 39 vs. 69 (-30).

Also compare

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