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It's a split decision.
Choose Fly.io if you need flexible Machines, hardware-isolated code sandboxes, or managed Postgres, and can handle usage-based pricing. Its listed shared-CPU Machines start at $2.19/month, but Fly has no free plan and support starts at $29/month. Choose Vercel if you want a free personal tier and deployment, sandbox, and AI model tools. Pro costs $20/month, but metered usage and add-ons can raise the bill.
01Side by side
| Fly.io | Vercel | |
|---|---|---|
| Starting paid price | $2.19/month for a shared-CPU Machine | $20/month for Pro |
| Free plan | No free plan listed | Free Hobby plan for personal, non-commercial projects |
| Best for | Flexible app hosting and isolated code workloads | App deployment and AI infrastructure |
| Core strength | Hardware-virtualized Machines and isolated Sprites | Deployment environments, sandboxes, and AI Model Gateway |
| Learning curve | Review rates ease of use 6/10 | Review rates ease of use 9/10 |
| Integrations/data | Managed Postgres, Redis, Tigris, NVMe, object storage | AI Model Gateway, durable backends, sandboxed environments |
| Team/seat costs | Seat price not published; Machine usage billed separately | $20 Pro; unlimited viewer seats; developer seats $20/month |
| Support | $29/month Standard; 36-hour first response | Advanced Support on custom-priced Enterprise |
Fly.io Choose Fly.io if
- Choose Fly.io if you want low-cost, usage-billed Machines.
- Choose Fly.io if isolated sandboxes and checkpointing matter.
- Choose Fly.io if managed Postgres and flexible storage fit.
Vercel Choose Vercel if
- Choose Vercel if you need a free personal project tier.
- Choose Vercel if deployment simplicity matters more than low entry pricing.
- Choose Vercel if AI model access and deployment environments fit.
02Pricing compared
Fly.io is cheaper to start if you need a running Machine: its pricing page lists shared-cpu-1x at $2.19/month for 1 shared CPU and 256 MB RAM, with usage also billed at $0.003/hour. Fly has no free plan. Vercel has a free Hobby tier, but it is for personal, non-commercial projects; listed limits include 1M CDN requests and 100 GB data transfer per month. Pro costs $20/month and includes $20 in monthly usage credit, not unlimited usage. Vercel lists separate charges for functions, sandboxes, builds, storage and other usage, so the bill depends on consumption. Fly also meters storage and egress; North America and Europe egress is $0.02/GB. Fly’s listed prices have no annual rate shown. Neither is a flat-price comparison: choose Fly for low-cost small Machines, Vercel for a free personal project or included Pro credit, and estimate usage before moving production.
03Features and depth
Both cover app deployment and sandboxes, but the infrastructure emphasis differs. Fly.io describes hardware-virtualized Machines for apps and workloads, plus Sprites: hardware-isolated environments for untrusted or AI-generated code that can be checkpointed and restored. It also lists local NVMe, durable global object storage, managed Postgres, Redis and Tigris, or the option to run a datastore on a Machine. Fly says it has 18+ regions and a 99.9% uptime SLA; its CLIs, MCP servers and plugins target agent-driven deployment, scaling and debugging.
Vercel’s listed stack centers on deployment environments, global delivery, Fluid Compute, durable orchestration, sandboxed environments and an AI Model Gateway. Its Enterprise plan lists a 99.99% SLA, but Enterprise pricing is custom. Fly exposes more explicit machine and database choices in the published feature details, while Vercel combines app deployment and AI services. Choose based on whether you want to configure underlying workloads or use Vercel’s deployment and AI infrastructure.
04Ease of use and learning curve
Vercel looks like the easier starting point for a team that wants a managed deployment platform: its review scores 9/10 for ease of use, versus 6/10 for Fly.io. Fly’s review describes it as flexible but not the simplest or most predictable option, and its pricing spans per-hour Machines, CPU- and memory-hour Sprites, storage, egress and optional support. That gives operators more pricing variables to track. Vercel starts with a free personal tier or a $20 Pro plan, but its usage-based add-ons still need watching. We’d favor Vercel for a simpler deployment path, and Fly when machine-level flexibility justifies the extra infrastructure and pricing decisions.
Questions people ask
Does Fly.io have a free plan?
No. The published pricing lists no free plan; the smallest shared-cpu-1x Machine is $2.19/month for 1 shared CPU and 256 MB RAM, with a $0.003/hour usage rate. Sprites, storage and egress have separate usage charges.
Is Vercel a good app platform?
Vercel is a reasonable fit for app deployment if its free Hobby tier or $20/month Pro plan suits your use. It also lists global delivery, deployment environments, sandboxed environments and AI tools. Check the metered add-ons: Pro’s $20 monthly usage credit does not make every service unlimited.
Which is better, Cloudflare Pages or Vercel?
We can’t make a sourced comparison with Cloudflare Pages from the information available here. For Vercel, the pricing page lists a free Hobby tier for personal, non-commercial projects and a $20/month Pro plan, plus metered add-ons. Check Cloudflare’s current pricing and limits before choosing.
Is there anything better than Vercel?
Fly.io may fit better if you specifically need configurable Machines, hardware-isolated code sandboxes or managed Postgres. Its listed shared-CPU Machines start at $2.19/month, but Fly has no free plan. Vercel may suit teams prioritizing its deployment and AI infrastructure with a free personal tier.