Why people look elsewhere

Where Modal fits badly, from its provider page.

  • An agent that needs to pause and resume: there is no paused state, and a memory snapshot terminates the source.
  • An always-on box: the lifetime cap is 24 hours and a running idle sandbox bills its full request.
  • A cheap always-on dev box: $347 a month documented, $555 on the measured CPU reading.
  • A client-facing URL: inbound is closed by default and there is no built-in desktop or browser.

The alternatives, cheapest always-on agent first

Monthly machine cost at list prices, before any AI model. ✱ means it cannot run that workload exactly as described; the provider page says why.

ProviderA personal agent that stays on (Hermes, OpenClaw)A coding agent for one developerA code interpreter inside your productA browser agent for a small teamDoes fully, where Modal does not
Modal (for reference)$143.71 ✱$46.15 ✱$49.32$1,159.80—
Agent 37$10.60$6.76$2.42$36.3021: copy a running machine, automatic backups, files survive a stop, can stay on indefinitely, …
Lizard$19.00$19.00$19.00$85.7916: its own virtual machine, pause keeps memory, snapshots with memory, copy a running machine, …
Boat$20.00$20.00$20.00$90.0018: its own virtual machine, docker inside, nested virtualisation, copy a running machine, …
InstaBox$20.00$20.00$20.00$90.5019: its own virtual machine, docker inside, files survive a stop, public link to a port, …
Runtime$24.95$13.49$12.83$157.5032: its own virtual machine, docker inside, nested virtualisation, pause keeps memory, …
Sandboxer$40.00$20.00$20.00$100.0022: its own virtual machine, docker inside, nested virtualisation, snapshots with memory, …
Morph$63.00$32.27$33.33$375.0014: its own virtual machine, docker inside, pause keeps memory, snapshots with memory, …
Vercel Sandbox$73.12 ✱$32.91$42.77$462.4012: its own virtual machine, docker inside, files survive a stop, wakes on a request, …
Sprites$77.61$34.15$35.90$485.0310: its own virtual machine, pause keeps memory, files survive a stop, wakes on a request, …
Cloudflare Sandbox$99.41 ✱$24.20 ✱$37.78$406.0310: its own virtual machine, automatic HTTPS, secrets the agent cannot read, limited API keys, …
boxd$110.90$50.80$50.32$754.8023: its own virtual machine, docker inside, pause keeps memory, snapshots with memory, …
Daytona
Modal vs Daytona
$122.07 ✱$55.75 ✱$55.38$830.7016: docker inside, copy a running machine, files survive a stop, can stay on indefinitely, …
Blaxel$123.29$57.79$55.20$828.0016: its own virtual machine, docker inside, pause keeps memory, files survive a stop, …
Tensorlake$250.00$24.46$28.60$331.0020: docker inside, nested virtualisation, resize while running, pause keeps memory, …
E2B
Modal vs E2B
$270.89 ✱$202.99 ✱$55.20$828.0013: its own virtual machine, docker inside, pause keeps memory, snapshots with memory, …

Compare any two or three in full on side by side, or price your own workload in the cost calculator.