Fly.io vs Vercel
Reliability comparison based on uptime, incident history, and mean time to recovery. Updated daily.
|
F
Fly.io
|
 Vercel
|
|
|---|---|---|
| Current Status | Operational | Operational |
| Uptime (30d) | 99.107% Best | 98.224% |
| Uptime (90d) | 96.748% | 98.382% Best |
| MTTR | 2.2 hrs | 1.5 hrs Best |
| Incidents (30d) | 3 Best | 8 |
| Incidents (90d) | 35 | 21 Best |
| Reliability Score | 72.0/100 Best | 71.8/100 |
Recent Incidents
Fly.io
Degraded networking to AWS IPs
none
Fly.io
Packet loss in IAD
minor
Fly.io
MPGv2 IAD control plane is read-only
minor
Vercel
Delays in Logs and Observability data
minor
Vercel
Increased build and deployment failures
major
Vercel
Delays in Drains, Observability, and Workflow in Washington (iad1)
major
Vercel
Vercel Auth login failures for pages with Deployment Protection enabled
major
Vercel
Elevated Sandbox error rates in Paris (cdg1)
minor
Vercel
Build failures and deployments serving 500s
major
Vercel
Build failures and functions using Edge runtime serving 500s
major
Vercel
Build failures and 500 errors for functions using Edge runtime
minor
Fly.io
Network outage in AMS region
critical
Fly.io
State database issues in GRU
major
Fly.io
Private Networking issues (6PN)
major
Fly.io
Partial Sprites outage in SJC region
major
Fly.io
Partial Sprites outage
major
Fly.io
Elevated private networking errors
major
Vercel
Deployment stuck in initializing state
minor
Vercel
Elevated Errors Triggering Deployments
major
Fly.io
Depot builder failures
minor
Frequently Asked Questions
Which is more reliable, Fly.io or Vercel?
Based on our monitoring data, Fly.io is currently more reliable than Vercel. Fly.io has a reliability score of 72.0/100 compared to Vercel's 71.8/100. This score factors in uptime percentage, mean time to recovery, incident frequency, and consistency. Monitor both services with Happy Uptime for real-time alerts.
Which has better uptime, Fly.io or Vercel?
Over the last 30 days, Fly.io has a higher uptime of 99.107% compared to Vercel's 98.224%. We check both services every 5 minutes from multiple global regions.
Is Fly.io more stable than Vercel?
Vercel has been more stable over the past 90 days with 21 incidents compared to Fly.io's 35 incidents. Fewer incidents generally indicates a more stable service. Use Happy Uptime to track both services and get AI-powered incident analysis.
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