Compare
We read the field so you don't have to.
Every comparison below is distilled from our ongoing competitor research — vendor docs and pricing pages, not vibes. Each page names its verification date and says plainly when the other product is the better pick. If a claim goes stale, the date tells you.
One thing to keep straight: the vendors below sell sandboxes to developers. spark-vm is a computer for agents — Muse, Grok Bot, Dots, and everything like them. Different customer, different job; the tables hold on the technical merits either way.
spark-vm vs E2B
Persistent computer vs the SDK-first sandbox cloud. Verified 2026-09-18.
spark-vm vs Daytona
Owning the machine vs renting stateful sandboxes by the hour. Verified 2026-09-18.
spark-vm vs Modal
A computer that stays yours vs serverless compute that now bills egress. Verified 2026-10-01.
spark-vm vs a raw VPS
The $4 droplet is cheap. The ops aren't. Verified 2026-09-18.
docs/COMPETITOR_ANALYSIS.md + the docs/COMPETITOR_WATCH_* series
in the public repo — the raw notes are
there if you want to check our work.
The one-paragraph version
Task-scoped sandboxes rent executions — fast starts, compute-time billing, state as an opt-in snapshot. spark-vm is a computer — files, scheduled jobs, and a desktop that are still there tomorrow, with a credential proxy and human approvals built in. Different shapes for different jobs; the pages above say which is which.