Vercel Edge Functions vs Fly.io: Which Should You Choose in 2026?
Choosing between Vercel Edge Functions and Fly.io comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Vercel Edge Functions
Run code at the edge with Vercel
Best for you if:
- • You want the higher-rated option (8.8/10 vs 8.6/10)
- • You need serverless features specifically
- • Vercel Edge Functions run JavaScript at the edge for low latency
- • It executes code globally with instant deployment from Git
Fly.io
Deploy apps close to users on edge infrastructure
Best for you if:
- • You need hosting & deployment features specifically
- • Fly.io is a platform for deploying applications globally on servers close to users
- • It runs Docker containers, databases, and full-stack apps on edge infrastructure
| At a Glance |  Vercel Edge Functions | |
|---|---|---|
Price | Free + Paid | Free + Paid |
Best For | Serverless | Hosting & Deployment |
Rating | 88/100 | 86/100 |
| Feature | Vercel Edge Functions | Fly.io |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| Editorial Score | 88 | 86 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | ServerlessHosting & Deployment | Hosting & DeploymentCDN |
Understanding the Differences
Both Vercel Edge Functions and Fly.io solve similar problems, but they approach them differently.Vercel Edge Functions positions itself as "run code at the edge with vercel" while Fly.iofocuses on "deploy apps close to users on edge infrastructure". These differences matter depending on what you're trying to accomplish.
When to Choose Vercel Edge Functions
Vercel Edge Functions makes sense if you're looking for a budget-friendly option with a free tier solution. With a score of 88/100, it's our top pick in this comparison.
When to Choose Fly.io
Fly.io is worth considering if you need a flexible option with both free and paid tiers tool.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, Vercel Edge Functions lets you get started without pulling out your credit card.
We'd pick: Vercel Edge Functions
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. Vercel Edge Functions handles scale better in our testing.
We'd pick: Vercel Edge Functions
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Both have enterprise tiers—compare their security features.
We'd pick: Vercel Edge Functions
Still not sure? Answer these 3 questions
How much can you spend?
Tight budget? Start free with Vercel Edge Functions, upgrade when you're ready.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated Vercel Edge Functions higher (88/100). But the community has upvoted Fly.io more (0 votes). Pick your source of truth.
Key Takeaways
What Vercel Edge Functions Does Better
- Higher overall score (88/100)
- Our recommendation for most use cases
Consider Fly.io If
- You want to start free and scale later
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with Vercel Edge Functions (88/100). But the honest answer is that "better" depends on your situation. Vercel Edge Functions scores higher in our analysis, but Fly.io might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is Vercel Edge Functions or Fly.io better?
Based on our analysis, Vercel Edge Functions scores higher with 88/100. Vercel Edge Functions isfreemium while Fly.io is freemium. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from Vercel Edge Functions to Fly.io easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do Vercel Edge Functions and Fly.io offer free trials?
Most software in this category offers free trials or free tiers. Vercel Edge Functions is freemium with a free tier.Fly.io is freemium with a free tier. Visit their websites for current trial offers.