Sandboxer vs Baponi

Baponi is a code-execution API: each call runs Bash, Python or Node in an isolated sandbox, and a thread_id saves and restores /home/baponi between calls. It is not a persistent machine, and processes do not run between calls. Pick Baponi for short, policy-controlled code execution that can be self-hosted on Kubernetes; pick Sandboxer for persistent full VMs.

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

At a glance

Sandboxer and Baponi compared
Capability	Sandboxer	Baponi
Isolation	microVM Cloud Hypervisor, its own kernel	multi-layer sandbox: seccomp, cgroups, zero capabilities Underlying runtime not named in docs.
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	State is a diff of /home/baponi saved after each call; nothing runs between calls.
Fork a sandbox	Copy-on-write disk copy that boots fresh
HTTPS URL per port	Private with a token, or public
Longest session	No limit on paid plans Auto-stop is up to 30 days or off	per-execution timeout: 60 s Free, 1 h Pro Enterprise unlimited or configurable; thread state retention 24 h, 7 days, 30 days or forever.
Billing	Per second, flat rate per size Stopped sandboxes are free	credits: 1 credit = 60 s of 1 CPU + 1 GiB RAM Free 1,000 credits/month; $1.00 per 1,000 extra; Pro $97/month with 4 CPU / 4 GiB.
GPUs
Self-host or open source		Single Helm chart on any Kubernetes cluster, own VPC, air-gapped supported.
Regions	US East (Virginia) and EU Central (Finland)

= not documented publicly.

Where Baponi is strong

Self-hostable on any Kubernetes cluster with one Helm chart, including air-gapped.
Stateful threads persist the home directory between calls with configurable retention.
Free plan of 1,000 credits a month with no credit card.
Network policy defaults to no network interface; unrestricted outbound is opt-in.

Where Sandboxer differs

Baponi executes individual calls with only the home directory carried between them; Sandboxer is a persistent VM whose processes and RAM survive stop and resume.
Baponi limits executions to 60 s on Free and 1 h on Pro; Sandboxer paid plans allow sandboxes with no time limit.
Baponi sandboxes have no documented inbound ports; Sandboxer exposes any port as an HTTPS URL.
Baponi prices by credits per CPU-minute at fixed 4 CPU / 4 GiB on Pro; Sandboxer lists per-size rates up to 16 vCPU / 32 GB (xlarge, on the $100 plan or higher).

Pick Baponi if

You need short code execution calls inside your own VPC or air-gapped cluster.
You want a Python/Node/Bash API with SDKs for LangChain, OpenAI Agents SDK and others.
You want a free tier for light usage.

Pick Sandboxer if

You need a persistent machine you can SSH into, with root, systemd and Docker.
You need to run servers and reach them over HTTPS.
You need processes to keep running or resume after stop.

Sources

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

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