Fly.io vs v0 by Vercel
Run your app close to users, globally
vs. AI app builder — prompt to full-stack Next.js apps
Pricing tiers
Fly.io
Pay-as-you-go
No monthly fee. Machines billed per second. Free allocations: ~3 small shared machines + 3 GB volumes.
$0 base (usage-based)
Shared CPU 1x — 256 MB
Entry VM. 1 shared vCPU, 256 MB RAM. ~$2.02/month continuously on.
$2/mo
Performance 1x — 2 GB
Dedicated 1 vCPU, 2 GB RAM.
$32/mo
Reservation — Shared (1 yr)
$36/year for $5/mo credit (40% savings).
$36/mo
Shared CPU 8x — 16 GB
8 shared vCPU, 16 GB RAM.
$89/mo
Performance 16x — 128 GB
Dedicated 16 vCPU, 128 GB RAM.
$1014/mo
Enterprise
Custom. Dedicated capacity, SLA.
Custom
v0 by Vercel
Free
$5/month in credits. 7 messages/day limit. Visual Design Mode, GitHub sync, Vercel deploy.
Free
Team
$30/user/month. $30 monthly credits per user + $2 daily login credits. Team collab + shared chats.
$30/mo
Business
$100/user/month. Same credits as Team + training opt-out by default.
$100/mo
Enterprise
Custom. Data never used for training, SAML SSO, RBAC, priority performance, guaranteed SLA.
Custom
Free-tier quotas head-to-head
Comparing pay-as-you-go on Fly.io vs free on v0 by Vercel.
| Metric | Fly.io | v0 by Vercel |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
Fly.io · 14 features
- Auto Stop/Start — Machines auto-stop when idle, start on request (like scale-to-zero).
- Certs — Let's Encrypt + wildcard certs managed.
- Fly GPU — A100/L40S/A10 on-demand GPU machines.
- Fly Kubernetes (FKS) — Managed Kubernetes on Fly machines.
- Fly Machines — Firecracker microVMs. Start in <1s. Run any Docker image.
- Fly Postgres — Managed Postgres via Supabase partnership (2024). Also legacy self-run Postgres …
- fly-replay headers — Route request to another region at app level.
- Fly Volumes — Persistent SSD attached to a Machine. Encrypted at rest.
- Global Anycast — Single IP routes to the closest region automatically.
- LiteFS — Distributed SQLite with primary/replica across regions.
- Private Networks — 6PN WireGuard mesh. Connect machines across regions privately.
- Secrets — Encrypted env vars propagated to all regions.
- Tigris (partner) — S3-compatible storage for Fly apps. By partner.
- Upstash Redis (partner) — Managed Redis via Upstash.
v0 by Vercel · 14 features
- Component Blocks — Pre-built blocks (pricing tables, hero, forms, etc.) to drop into apps.
- Database Actions — Provision Neon/Supabase/Vercel Postgres from v0.
- Deploy to Vercel — One-click deploy with auto-env-vars.
- GitHub Sync — Two-way sync with real repos. Commit from v0 or edit in repo.
- Image-to-App — Drop a screenshot or Figma → generate matching UI.
- Iterative Chat — Conversational refinement — "make it dark mode" etc.
- MCP Server — Agent access to v0 via Model Context Protocol.
- Next.js 15 App Router — Output targets latest Next.js.
- Project Chats — Related chats grouped into projects.
- Prompt-to-App — Describe in prose → get a full Next.js app.
- shadcn/ui built-in — Component library preselected — consistent DS.
- v0 API — Programmatic access via API key (Premium).
- Vercel AI SDK Integration — Generated apps often include AI SDK scaffolding.
- Visual Design Mode — WYSIWYG editing of generated components.
Developer interfaces
| Kind | Fly.io | v0 by Vercel |
|---|---|---|
| CLI | flyctl CLI | — |
| SDK | — | Vercel AI SDK (ai-sdk-v0) |
| REST | Machines API | v0 API (Premium) |
| GRAPHQL | Fly GraphQL API | — |
| MCP | — | v0 MCP Server |
| OTHER | Fly Postgres (wire) | GitHub Sync, v0 Web App, Vercel Deploy |
Staxly is an independent catalog of developer platforms. Outbound links to Fly.io and v0 by Vercel are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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