Compare sandbox providers
Everyone else sells parts.
We sell the work done.
Sandbox providers give developers a computer to build an agent on. FullsendAI is the agent, the computer, the live view and take-over, ready to use, and still costs less per hour than most of them.
The short answer.
As of 1 November 2026.
The only finished product
Every provider here is infrastructure: you build the agent, the screen and the controls. Ours is ready to use.
Very fast and efficient
A computer for your agent that's ready in moments, with the agent included.
Desktop, browser, take-over
A full desktop you can watch and take over. Only a few providers offer a desktop at all, and none ship it ready to use.
All twelve, side by side.
Published hourly rates, cheapest first. DIY means possible if you build it yourself.
NorthflankMicroVM sandboxes$0.067 an hourDesktopNoBrowserDIYWatchNoTake overNo- FullsendAIThe finished product: agent included$0.08–$0.13 an hourDesktopYesBrowserYesWatchYesTake overYes
Together Code SandboxVM sandbox SDK$0.149 an hourDesktopNoBrowserNoWatchNoTake overNo
Fly.io SpritesPersistent microVMs for agentsUp to $0.165 an hour, billed by actual useDesktopNoBrowserNoWatchNoTake overDIY
E2BSandbox SDK with a desktop option$0.166 an hourDesktopYesBrowserDIYWatchYesTake overYes
DaytonaSandbox SDK with computer use$0.166 an hourDesktopYesBrowserDIYWatchYesTake overYes
Cloudflare SandboxSandbox SDK on ContainersAbout $0.20 an hour busy (nearest size is 2 vCPU / 6 GiB)DesktopNoBrowserNoWatchNoTake overNo
Modal SandboxesSandbox SDK$0.238 an hourDesktopDIYBrowserDIYWatchDIYTake overDIY
RunloopDevboxes for coding agents$0.317 an hourDesktopYesBrowserYesWatchNot statedTake overNot stated
Vercel SandboxMicroVM sandbox SDK$0.34 an hour fully busy, about $0.11 at 10% CPUDesktopNoBrowserNoWatchNoTake overNo
BrowserbaseCloud browsers only$0.10–0.12 per browser-hourDesktopNoBrowserYesWatchYesTake overYes- SteelCloud browsers only$0.08–0.10 per browser-hourDesktopNoBrowserYesWatchYesTake overYes
CuaOpen-source framework; you bring the machinesYour own cloud bill; plans $0, $18 or $30 a seatDesktopYesBrowserDIYWatchYesTake overYes
| Provider | Desktop | Browser | Watch live | Take over | Price | Monthly minimum |
|---|---|---|---|---|---|---|
| NorthflankMicroVM sandboxes | No | DIY | No | No | $0.067 an hour | None |
| FullsendAIThe finished product: agent included | Yes | Yes | Yes | Yes | $0.08–$0.13 an hour | None; pay as you go |
| Together Code SandboxVM sandbox SDK | No | No | No | No | $0.149 an hour | None |
| Fly.io SpritesPersistent microVMs for agents | No | No | No | DIY | Up to $0.165 an hour, billed by actual use | None |
| E2BSandbox SDK with a desktop option | Yes | DIY | Yes | Yes | $0.166 an hour | $150 a month for Pro |
| DaytonaSandbox SDK with computer use | Yes | DIY | Yes | Yes | $0.166 an hour | None |
| Cloudflare SandboxSandbox SDK on Containers | No | No | No | No | About $0.20 an hour busy (nearest size is 2 vCPU / 6 GiB) | $5 a month (Workers Paid) |
| Modal SandboxesSandbox SDK | DIY | DIY | DIY | DIY | $0.238 an hour | None |
| RunloopDevboxes for coding agents | Yes | Yes | Not stated | Not stated | $0.317 an hour | $250 a month for suspend and resume |
| Vercel SandboxMicroVM sandbox SDK | No | No | No | No | $0.34 an hour fully busy, about $0.11 at 10% CPU | Pro plan for real use |
| BrowserbaseCloud browsers only | No | Yes | Yes | Yes | $0.10–0.12 per browser-hour | $20 a month (Developer) |
| SteelCloud browsers only | No | Yes | Yes | Yes | $0.08–0.10 per browser-hour | None; Scale is $250 a month |
| CuaOpen-source framework; you bring the machines | Yes | DIY | Yes | Yes | Your own cloud bill; plans $0, $18 or $30 a seat | None |
List prices as of 1 November 2026, before free credits. Some providers bill CPU only while it's busy, so idle time costs them less. Names and logos belong to their owners and appear only to identify each provider. See also the full E2B comparison.
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