Sandboxer vs Tensorlake

Tensorlake provides MicroVM sandboxes where suspend and snapshots keep memory, filesystem and running processes, plus GPU sandboxes that use gVisor. It differs from Sandboxer in GPU availability and usage-metered billing, while Sandboxer gives a full Ubuntu VM with Docker and nested KVM. Pick Tensorlake for GPU work; pick Sandboxer for a general-purpose VM.

Checked against Tensorlake's public docs on October 24, 2026. Sources are linked in the table and listed below.

At a glance

Sandboxer and Tensorlake compared
Capability	Sandboxer	Tensorlake
Isolation	microVM Cloud Hypervisor, its own kernel	MicroVM (CPU); gVisor (GPU sandboxes)
Full Linux with root	Ubuntu 24.04, sudo, systemd
Docker inside	Preinstalled
Nested virtualization (/dev/kvm)
Pause and resume with memory	Running processes come back	partial Suspend preserves memory and filesystem, but only named sandboxes can be suspended.
Fork a sandbox	Copy-on-write disk copy that boots fresh	partial Snapshots of filesystem, memory and processes can be restored into new sandboxes; clone is described as a use case.
HTTPS URL per port	Private with a token, or public	partial Exposed user ports are reachable through the proxy; unauthenticated access is an opt-in setting.
Longest session	No limit on paid plans Auto-stop is up to 30 days or off	2 h Free, 24 h Usage Credits, unlimited Pro Timeout is an idle threshold; terminated sandboxes restartable for 48 h.
Billing	Per second, flat rate per size Stopped sandboxes are free	per active CPU, RAM and disk hour CPU metered on active execution; RAM and disk charged while running.
GPUs		GPU sandboxes are available and use gVisor.
Self-host or open source		partial Enterprise plan lists in-VPC or on-prem deployment.
Regions	US East (Virginia) and EU Central (Finland)	EU data residency supported; no region list

= not documented publicly.

Price for one 4 vCPU, 8 GB machine

Sandboxer

$0.036/hour

Flat per-second rate for the default size

Tensorlake

$0.40/hour

Usage Credits rate: 4 vCPU × $0.07/h + 8 GB × $0.015/h (Pro: 4 × $0.042 + 8 × $0.009 = $0.24)

List prices from each provider's pricing page, before free credits, plans and storage. This compares price only.

Where Tensorlake is strong

Suspend and snapshots keep memory, filesystem and processes.
GPU sandboxes are available.
Pro plan has unlimited session length and up to 1,000 concurrent sandboxes.
A free tier with one sandbox at a time.

Where Sandboxer differs

Tensorlake CPU is billed on active execution rather than by reserved size.
Tensorlake's GPU sandboxes use gVisor rather than a microVM.
Root, Docker and nested virtualization are not documented in the pages fetched.

Pick Tensorlake if

You need GPU sandboxes.
You want CPU billed only while code is executing.
You need EU data residency or in-VPC deployment.

Pick Sandboxer if

Your workload needs a full Ubuntu VM with systemd, Docker preinstalled and nested KVM.
You want coding agents (Claude Code, Codex, OpenCode, Pi, Kimi Code, Mistral Vibe) preinstalled and driven through a prompt API.
You want stop/resume that keeps memory and running processes, with sessions that can run with no time limit on a paid plan.

Sources

Products change. If something here is out of date, email hello@sandboxer.com and we'll fix it. Tensorlake is a trademark of its owner. Sandboxer is an independent product and is not affiliated with Tensorlake.

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