Best Vercel Sandbox alternatives
The strongest Vercel Sandbox alternatives are E2B, Cloudflare Sandbox SDK, Daytona. Pick based on what you need that Vercel Sandbox does not offer — see the reasons under each entry.
Why teams look beyond Vercel Sandbox
A polished microVM sandbox with standout egress and billing design; the obvious pick for Vercel-centric teams.
- No GPU support documented
- Hosted only — no self-hosting or BYOC
- Hobby sessions capped at 45 minutes
Vercel Sandbox alternatives, ranked
E2B
Open-source cloud sandboxes for AI agents, each a Firecracker microVM, with pause/resume, snapshots and forking.
- Firecracker microVM
- Open source
- Self-hostable
- BYOC
- Pause/resume
Why it’s here: Code interpreters and short-to-medium-lived agent tasks that need microVM isolation, with an open-source self-host path. The safe default for most agent builders: mature, open source, microVM-isolated and widely supported.
Cloudflare Sandbox SDK
A TypeScript SDK for Cloudflare Workers that runs untrusted code in Linux sandboxes backed by Cloudflare Containers and Durable Objects.
- MicroVM (Containers)
- Open source
- Snapshots
Why it’s here: Teams building on Cloudflare Workers that want per-user sandboxes with egress and credentials controlled in code. A strong, programmable option for Workers developers; less suited to Python-first agent stacks.
Daytona
Stateful sandboxes for AI-generated code — Linux containers, Linux and Windows VMs, macOS and GPU sandboxes — with snapshots, volumes and preview URLs.
- Containers or VMs
- BYOC
- GPU
- Pause/resume
Why it’s here: Long-lived, stateful agent workspaces that need many SDK languages, GPUs, or Windows and macOS sandboxes. The strongest choice for stateful coding-agent workspaces and breadth of sandbox types; note the shift away from open source.
Fly.io Sprites
Persistent, hardware-isolated Linux computers for AI agents with a durable 100 GB disk, checkpoints, and no compute charges while idle.
- MicroVM
- Pause/resume
Why it’s here: Long-running, stateful agent computers that should cost nothing while idle. The most natural “persistent computer per agent” model, with idle-free billing.
Freestyle
Full Linux VMs for AI agents with live forking of running VMs, memory-preserving hibernation, VPCs and nested virtualization.
- VM
- Pause/resume
Why it’s here: Long-running coding agents that need full VMs — Docker, nested virtualization — with fork and hibernate. The most capable “real VM” for agents, with live forking; a strong pick for complex coding agents.
Together Code Sandbox
Together AI’s microVM sandbox service, built on the CodeSandbox acquisition, with snapshot-based starts, hibernation, cloning and preview URLs.
- MicroVM
- Pause/resume
Why it’s here: AI app builders and coding products that need hibernatable, forkable dev-environment VMs with preview URLs. Battle-tested microVM dev environments, now best suited to teams already working with Together AI.
Vercel Sandbox vs alternatives
| Sandbox | Isolation | Open source | Self-host / BYOC | Cold start (vendor) | Max session | Snapshots / pause | GPU | SDKs |
|---|---|---|---|---|---|---|---|---|
| Vercel Sandbox | Firecracker microVM | No | No / No | Milliseconds (claim) | 24 h (Pro) | Yes / Yes | Not documented | JavaScript/TypeScript, Python |
| E2B | Firecracker microVM | Yes | Yes / Yes | Not documented | 1 h / 24 h (Pro) | Yes / Yes | No | Python, JavaScript/TypeScript |
| Cloudflare Sandbox SDK | MicroVM (Containers) | Yes | No / No | 1–3 s | No fixed cap | Yes / Not documented | Not documented | TypeScript (Workers) |
| Daytona | Containers or VMs | No | Not documented / Yes | <90 ms | Unlimited | Yes / Yes | Yes | Python, TypeScript, Ruby, Go, Java |
| Fly.io Sprites | MicroVM | No | No / No | 0.1–2 s wake | Unlimited | Yes / Yes | No | JavaScript/TypeScript, Go, Python, Elixir |
| Freestyle | VM | No | No / Not documented | 65 ms | Unlimited (paid) | Yes / Yes | Not documented | TypeScript |
| Together Code Sandbox | MicroVM | No | No / Not documented | 0.5 s (snapshot) | Until terminated | Yes / Yes | Not documented | Python, TypeScript |
Frequently asked questions
What is the best alternative to Vercel Sandbox?
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Cite this page
Agent Sandboxes. (2026). Best Vercel Sandbox alternatives. agentsandboxes.org. Last reviewed November 8, 2026. https://agentsandboxes.org/alternatives/vercel-sandbox/
Found an error or a missing sandbox? Submit a correction — every entry links to the sources it relies on.