Sandboxer vs Modelence

Modelence is a production hosting platform: it runs always-on backends, workers and managed MongoDB, Postgres and Redis on AWS, driven from one config file. It hosts apps rather than offering machines to log into. Pick Modelence to run an agent-built app in production; pick Sandboxer for isolated development machines.

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

At a glance

Sandboxer and Modelence compared
Capability	Sandboxer	Modelence
Isolation	microVM Cloud Hypervisor, its own kernel	Separate sandbox and production environments per app Tenant isolation technology is not described.
Full Linux with root	Ubuntu 24.04, sudo, systemd	Hosts app processes; no machine access described.
Docker inside	Preinstalled
Nested virtualization (/dev/kvm)
Pause and resume with memory	Running processes come back
Fork a sandbox	Copy-on-write disk copy that boots fresh
HTTPS URL per port	Private with a token, or public	partial Production apps are web-served; per-port URLs not described.
Longest session	No limit on paid plans Auto-stop is up to 30 days or off
Billing	Per second, flat rate per size Stopped sandboxes are free	plan subscription plus hourly container sizes Starter $20/mo, Pro $100/mo, Scale $500/mo include equal usage credit; e.g. X-Large 4 vCPU/8 GB $0.24/h.
GPUs
Self-host or open source		partial Framework is open source and the cloud uses standard AWS primitives; the cloud itself is not self-hostable.
Regions	US East (Virginia) and EU Central (Finland)	17 AWS regions 3 regions on Starter, 17 on Pro and Scale.

= not documented publicly.

Price for one 4 vCPU, 8 GB machine

Sandboxer

$0.036/hour

Flat per-second rate for the default size

Modelence

$0.24/hour

X-Large container (4 vCPU / 8 GB) at $0.24/h

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

Where Modelence is strong

Managed MongoDB, Postgres and Redis are provisioned from the config with URLs injected.
It runs on AWS in 17 selectable regions.
Production autopilot restarts crashed processes and reroutes traffic.
A 99.9% uptime target and status page are published.

Where Sandboxer differs

Modelence runs production apps; Sandboxer runs development and agent machines.
Modelence bills fixed container sizes hourly under a plan; Sandboxer bills per second and stopped sandboxes cost nothing.
Modelence has 17 AWS regions; Sandboxer has one.
Modelence has no documented root access, Docker or nested virtualisation.

Pick Modelence if

You want to host a production backend with managed databases and monitoring.
You need to pick from many AWS regions for data residency.
You want an open-source framework with a matching cloud.

Pick Sandboxer if

You need a full Ubuntu VM with root, systemd and Docker inside a microVM with its own kernel.
You want stop/resume that keeps running processes and memory, and forks from disk snapshots.
You want coding agents (Claude Code, Codex and others) preinstalled and driven through a prompt API.

Sources

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

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