Softwr

Cloud · head to head

Fly.io vs Vercel

Fly.io logo

Fly.io

Cloud

Deploy web applications globally

From
$29/month
Rated
-
Full reviewWebsite
Vercel logo

Vercel

Technology

Develop. Preview. Ship.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Vercel has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fly.io egress is priced by destination region, from $0.02 per GB in North America and Europe to $0.12 per GB for Africa and India, so the same traffic costs six times more depending on where users are; Vercel usage-based pricing can spike unexpectedly during traffic surges or DDoS attacks
  • They diverge on capability: Fly.io covers Global deployment, Vercel covers Instant deployments.

Where they differ

Only the attributes on which Fly.io and Vercel actually diverge.

Attributes where Fly.io and Vercel differ
AttributeFly.ioVercel
Starting price$29/monthFree
Pricing modelusage-basedUnknown
Free tierNoYes
PlatformsWeb, Api, DockerWeb, CLI
CategoryCloudTechnology
Founded20202015

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Fly.io

  • Global deployment
  • Docker support
  • Postgres databases
  • Redis support
  • Auto-scaling
  • Health checks
  • Backups
  • Monitoring

Only in Vercel

  • Instant deployments
  • Preview deployments
  • Serverless functions
  • Edge network
  • Automatic HTTPS
  • Custom domains
  • Git integration
  • Real-time collaboration

Both cover

  • GitHub

What people use each for

The jobs each tool is most often brought in to do.

Fly.io

  • Deploying containerised applications close to users across regionsnot Vercel
  • Running full stack apps and databases on managed machinesnot Vercel

Vercel

  • Static sitesnot Fly.io
  • JAMstack applicationsnot Fly.io
  • Serverless APIsnot Fly.io
  • E-commerce sitesnot Fly.io
  • Documentation sitesnot Fly.io

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Fly.io

  • Egress is priced by destination region, from $0.02 per GB in North America and Europe to $0.12 per GB for Africa and India, so the same traffic costs six times more depending on where users are
  • Stopped machines still bill at $0.15 per GB of root filesystem a month, so a paused service is not a free one
  • Volumes are billed on provisioned capacity rather than usage, at $0.15 per GB a month
  • Reservation discounts of 40% require paying a year up front, from $36 to $1,440
  • Fly Kubernetes is a separate $75 a month per cluster
  • Dedicated IPv4 addresses are $2 a month each

Vercel

  • Usage-based pricing can spike unexpectedly during traffic surges or DDoS attacks
  • No spending limit controls or automatic shutoff mechanisms
  • Bandwidth costs ($0.15/GB) quickly accumulate for high-traffic applications

Pricing, plan by plan

Fly.io

$29/month
  • Pay-as-You-Go$null/mo
    • Micro VMs and persistent storage charged by usage
    • FlyCTL CLI
    • Unlimited users and organizations
  • Serious Support$29/month
    • Access to dedicated engineering team
    • All Pay-as-You-Go features
  • Machine Reservation Blocks$null/mo
    • 40% discount on machine usage
    • Requires upfront payment for savings
  • Compliance Package$99/month
    • HIPAA compliance
    • BAAs
    • SOC2 documentation

Vercel

Free
  • HobbyFree
    • Non-commercial use only
    • 100GB bandwidth
    • Community support
  • Pro$20/user/month
    • Commercial use
    • 1TB bandwidth
    • $20 usage credit
  • Enterprise$undefined/custom
    • Custom infrastructure
    • Premium support
    • Compliance add-ons

Which should you pick?

Choose Fly.io if

  • You need global deployment.
  • You work on Web, Api, Docker.
  • You also want docker support.
Fly.io review

Choose Vercel if

  • You need instant deployments.
  • You want to start without paying.
  • You work on Web, CLI.
  • You also want preview deployments.
Vercel review

Questions people ask

Is Fly.io or Vercel better?
Neither clearly leads. Fly.io starts at $29/month and Vercel at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fly.io or Vercel?
Vercel has a free tier; the other does not. Paid plans start at $29/month for Fly.io and Free for Vercel.
Does Fly.io or Vercel run on more platforms?
Fly.io runs on Web, Api, Docker. Vercel runs on Web, CLI.
Can I use Vercel for free?
Yes. Vercel has a free tier, so you can try it without paying. Fly.io starts at $29/month.
What is Fly.io best used for?
Fly.io is most often used for deploying containerised applications close to users across regions, running full stack apps and databases on managed machines. Of those, deploying containerised applications close to users across regions and running full stack apps and databases on managed machines are not what Vercel is typically brought in for.
What can Fly.io do that Vercel cannot?
Fly.io covers Global deployment, Docker support, Postgres databases, Redis support. Vercel covers Instant deployments, Preview deployments, Serverless functions, Edge network. Both handle GitHub.

Answered from the vendors’ own pages

Fly.io: Is there a free tier for Fly.io?

Fly.io does not advertise a free tier. The base plan is pay-as-you-go with usage-based pricing for Micro VMs and persistent storage. All users get FlyCTL CLI, unlimited organizations, private networking, SSO, ACLs, and scoped tokens.

Source
Vercel: What are Vercel's main pricing tiers?

Vercel offers a free Hobby plan (non-commercial), Pro at $20/user/month with $20 usage credit, and Enterprise with custom pricing. Additional compliance add-ons cost $150-$350/month.

Source
Fly.io: How much does Fly.io Serious Support cost?

Serious Support costs 29 USD per month and provides access to a dedicated engineering team while maintaining all pay-as-you-go features for Micro VMs and storage.

Source
Vercel: How much do bandwidth overages cost on Vercel?

Bandwidth overages cost $0.15/GB after plan limits are exceeded. Hobby plan includes 100GB free bandwidth; Pro includes 1TB. Usage-based billing can cause unexpected bills.

Source
Fly.io: What does Fly.io Compliance Package include?

The Compliance Package is 99 USD per month and includes HIPAA compliance, BAAs, and SOC2 documentation for organizations requiring compliance certifications.

Source
Vercel: Is Vercel free for Next.js projects?

Yes, Vercel offers a free Hobby plan for non-commercial Next.js projects with automatic deployments from git. Commercial projects require Pro plan or higher.

Source
Fly.io: Does Fly.io offer discounts for upfront commitment?

Yes, Fly.io offers Machine Reservation Blocks with 40% discount on machine usage. This requires upfront payment but applies savings on infrastructure costs.

Source
Vercel: Can I set spending limits on Vercel?

No, Vercel does not offer hard spending caps or automatic shutoff. High traffic, DDoS attacks, or misconfigured functions can result in unexpectedly large bills.

Source
Vercel: What is included in the Pro plan?

Pro ($20/user/month) includes $20 usage credit, 1TB bandwidth, support for commercial projects, git integration, and preview deployments.

Source
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