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) | 96.679% Best | 88.686% |
| Uptime (90d) | 97.421% Best | 90.179% |
| MTTR | 5.3 hrs Best | 13.1 hrs |
| Incidents (30d) | 17 Best | 22 |
| Incidents (90d) | 40 | 37 Best |
| Reliability Score | 63.0/100 Best | 41.8/100 |
Recent Incidents
Fly.io
Some Managed Postgres clusters in FRA are unreachable
major
Fly.io
fly ssh console returns error 500
none
Vercel
Workflow usage amounts are incorrectly calculated
minor
Fly.io
log search unavailable
major
Fly.io
Upstash Redis Outage
major
Vercel
Vercel Queues, and Vercel Workflow runs were delayed
minor
Fly.io
Certificate Issuance failing due to LetsEncrypt Outage
critical
Vercel
Delays Processing Builds
minor
Vercel
Elevated function invocation failures in IAD1
minor
Vercel
Elevated errors across multiple services in IAD1
minor
Vercel
Elevated Errors Creating New Deployments
minor
Fly.io
Connectivity issues in SJC
major
Fly.io
Intermittent machines issues in BOM
minor
Vercel
Increased error rate in Workflows
major
Fly.io
Elevated error rates on List Machines endpoint
minor
Vercel
Failures to load data across multiple services on the Vercel dashboard, API, and CLI
major
Fly.io
Petsem is down
major
Fly.io
Errors Setting and Updating Secrets on Apps
major
Fly.io
Log search unavailable
minor
Vercel
Elevated Build Errors
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 63.0/100 compared to Vercel's 41.8/100. 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 96.679% compared to Vercel's 88.686%. 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 37 incidents compared to Fly.io's 40 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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