Modal vs Vercel Sandbox: Which is Better in 2026?
Choosing between Modal and Vercel Sandbox? Both are popular agent sandboxes & code execution tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.
Quick verdict
Both Modal and Vercel Sandbox are strong agent sandboxes & code execution choices. The right pick comes down to your specific feature needs, existing stack, and team preferences. In our catalog, Modal rates slightly higher (4.7 vs 4.5 out of 5).
Modal vs Vercel Sandbox — Side by Side
| Modal | Vercel Sandbox | |
|---|---|---|
| Category | Agent Sandboxes & Code Execution | Agent Sandboxes & Code Execution |
| Pricing | Free · paid from $250/mo | Free · then usage-based |
| Starting price | Free tier available | Free tier available |
| Free tier | ||
| Rating | 4.7 | 4.5 |
| Best for | Agent Sandboxes & Code Execution — sandbox, serverless | Agent Sandboxes & Code Execution — sandbox, firecracker |
Pros & Cons
- Sandboxes, GPUs and jobs on one platform and one bill
- Infrastructure as Python, with no YAML or Dockerfiles required
- $30/month free covers a lot of prototyping
- Python-first; other languages are second-class
- CPU sandbox rates are higher than dedicated sandbox vendors
- Team plan is a $250 step up
- Active-CPU billing: idle time waiting on the model is free
- Firecracker isolation with snapshots and persistent drives
- Natural fit if the app already runs on Vercel
- Requires a Vercel account, and Pro for serious use
- Max 8 vCPUs / 16 GB below Enterprise
- Many metered dimensions to model
Key Features Compared
Modal
- 3 workspace seats
- Sandboxes, functions and GPUs
- Per-second billing
Vercel Sandbox
- $0.0212 / GB-hour memory
- Uses the Pro plan’s $20 credit first
- 24-hour sessions
- 10,000 concurrent sandboxes
Choose Modal if…
- You want a free tier to validate before paying.
- Sandboxes, GPUs and jobs on one platform and one bill
- Infrastructure as Python, with no YAML or Dockerfiles required
- $30/month free covers a lot of prototyping
Choose Vercel Sandbox if…
- You want a free tier to validate before paying.
- Active-CPU billing: idle time waiting on the model is free
- Firecracker isolation with snapshots and persistent drives
- Natural fit if the app already runs on Vercel
Frequently Asked Questions
Is Modal better than Vercel Sandbox?⌄
Both Modal and Vercel Sandbox are strong agent sandboxes & code execution choices. The right pick comes down to your specific feature needs, existing stack, and team preferences. In our catalog, Modal rates slightly higher (4.7 vs 4.5 out of 5).
What is the difference between Modal and Vercel Sandbox?⌄
Modal — Serverless compute for Python, with sandboxes, GPUs and per-second billing. Starter is free with $30/month in compute credit. Vercel Sandbox — Firecracker microVMs on Vercel for running untrusted and AI-generated code. You pay only for active CPU time, not for the time a sandbox spends waiting on the model. Both are agent sandboxes & code execution tools; the comparison table above breaks down pricing, free tiers, and what each is best for.
Modal vs Vercel Sandbox: which is cheaper?⌄
Modal pricing: Free · paid from $250/mo. Vercel Sandbox pricing: Free · then usage-based. Confirm current pricing on each tool's official site, as plans change.
Which is rated higher, Modal or Vercel Sandbox?⌄
In our catalog, Modal rates 4.7 out of 5 and Vercel Sandbox rates 4.5 out of 5, so Modal has a slight edge on reviews.
See more options in our guide to the best agent sandboxes & code execution tools for startups.
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