E2B vs Vercel Sandbox: Which is Better in 2026?
Choosing between E2B 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 E2B 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.
E2B vs Vercel Sandbox — Side by Side
| E2B | Vercel Sandbox | |
|---|---|---|
| Category | Agent Sandboxes & Code Execution | Agent Sandboxes & Code Execution |
| Pricing | Free · paid from $150/mo | Free · then usage-based |
| Starting price | Free tier available | Free tier available |
| Free tier | ||
| Rating | 4.6 | 4.5 |
| Best for | Agent Sandboxes & Code Execution — sandbox, agents | Agent Sandboxes & Code Execution — sandbox, firecracker |
Pros & Cons
- Purpose-built for agents, with SDKs designed around tool calls
- Fast microVM startup with real isolation
- Open-source core
- $150/month before any compute on the first paid tier
- Hobby sessions cap at one hour
- Usage billing on top of the plan makes costs harder to forecast
- 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
E2B
- Sessions up to 24 hours
- 100 concurrent sandboxes
- Add-ons to 600 or 1,100 concurrent
Vercel Sandbox
- $0.0212 / GB-hour memory
- Uses the Pro plan’s $20 credit first
- 24-hour sessions
- 10,000 concurrent sandboxes
Choose E2B if…
- You want a free tier to validate before paying.
- Purpose-built for agents, with SDKs designed around tool calls
- Fast microVM startup with real isolation
- Open-source core
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 E2B better than Vercel Sandbox?⌄
Both E2B 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.
What is the difference between E2B and Vercel Sandbox?⌄
E2B — Open-source cloud sandboxes built for AI agents to run code in. The Hobby tier is free with $100 in credits, and Pro is $150/month plus usage. 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.
E2B vs Vercel Sandbox: which is cheaper?⌄
E2B pricing: Free · paid from $150/mo. Vercel Sandbox pricing: Free · then usage-based. Confirm current pricing on each tool's official site, as plans change.
Which is rated higher, E2B or Vercel Sandbox?⌄
In our catalog, E2B rates 4.6 out of 5 and Vercel Sandbox rates 4.5 out of 5, so E2B 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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