Agent infrastructure · sandboxes
Which sandbox spins up fastest?
26Providers/100 per modeRuns per provider/2026-08-14Measured/daily · open CICadence
Every coding agent needs an isolated box to execute in — and cold-start latency is the tax on every task. This ranks sandbox providers by ComputeSDK's composite score — cold-start latency percentiles blended with reliability — re-measured daily in their open CI.
Sandboxes· ranked by composite score
source: ComputeSDK benchmarks ↗#ProviderCompositeMedianP95Burst ×100StaggeredSuccess$/hr
1CreateOS96.5340 ms380 ms339 ms77 ms100%—2Northflank96.0380 ms420 ms380 ms97 ms100%—3Arker95.7420 ms440 ms415 ms77 ms100%—4Isorun95.0490 ms510 ms493 ms26 ms100%—5Blaxel94.2490 ms720 ms491 ms255 ms100%$0.0836Declaw94.2540 ms640 ms545 ms15 ms100%—7Archil93.7590 ms680 ms593 ms129 ms100%—8Mosaic92.1760 ms840 ms759 ms—100%—9Modal91.5810 ms890 ms815 ms546 ms100%$0.1210Lightning AI90.4720 ms1.29 s724 ms147 ms100%—11Cloud Run90.1790 ms1.23 s792 ms585 ms100%—12E2B89.7830 ms1.10 s819 ms508 ms99%$0.08313Beam87.01.18 s1.45 s1.18 s92 ms100%—14Superserve85.51.22 s1.78 s1.22 s311 ms100%—15Tenki82.51.59 s1.98 s1.59 s690 ms100%—16Runloop81.31.21 s2.86 s1.21 s535 ms100%$0.1617Tensorlake78.72.08 s2.20 s2.08 s745 ms100%—18Sail68.52.98 s3.42 s2.98 s639 ms100%—19Vercel55.5740 ms26.00 s741 ms442 ms100%$0.1520OpenComputer48.02.12 s7.12 s2.07 s76 ms88%—21Cloudflare46.84.84 s6.00 s4.84 s3.76 s100%$0.09022Daytona34.9220 ms1.05 s0 ms899 ms37%$0.08323Upstash29.46.02 s8.63 s6.02 s471 ms100%—24Sandbox00.014.83 s20.66 s14.83 s7.35 s100%—25CodeSandbox0.035.12 s53.46 s33.77 s2.48 s88%$0.074est26Run Cloud0.044.96 s118.01 s44.96 s—100%—
How it's measured
The composite is ComputeSDK's headline score: cold-start latency percentiles blended with reliability, so a provider can't top the board on a degenerate run. TTI = create a sandbox, execute a command, wait for the answer. Burst (100 at once) and staggered (100 at 200 ms intervals) medians come from the raw repo data; prices normalized to 1 vCPU + 2 GB.
Independent & re-run daily
Run by ComputeSDK (a provider-neutral SDK) in public GitHub CI — raw per-iteration results are committed to the open repo, and this page reads them straight from it. Related: the sandboxes agents store to and the browsers they drive, on the Storage and Browser boards.