Agent infrastructure · sandboxes

Which sandbox spins up fastest?

20Providers/100 per modeRuns per provider/2026-07-17Measured/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

1Isorun99.360 ms80 ms58 ms13 ms100%—2Northflank98.3160 ms190 ms158 ms64 ms100%—3Lightning AI96.9280 ms340 ms285 ms203 ms100%—4Declaw96.8270 ms390 ms270 ms49 ms100%—5Blaxel96.1360 ms440 ms359 ms195 ms100%$0.083 6Vercel95.0400 ms590 ms403 ms321 ms100%$0.15 7Modal93.1620 ms770 ms624 ms460 ms100%$0.12 8E2B92.9480 ms810 ms480 ms373 ms99%$0.083 9Beam92.8600 ms890 ms603 ms364 ms100%—10Archil92.3620 ms940 ms619 ms126 ms100%—11Daytona92.0580 ms1.12 s580 ms114 ms100%$0.083 12Cloud Run91.9600 ms1.12 s598 ms527 ms100%—13Superserve90.7750 ms900 ms751 ms353 ms100%—14CreateOS87.3600 ms2.21 s604 ms256 ms100%—15Tensorlake85.91.37 s1.46 s1.37 s779 ms100%—16Runloop82.5710 ms3.26 s715 ms587 ms100%$0.16 17Upstash69.12.24 s4.35 s2.24 s297 ms100%—18Cloudflare53.44.26 s5.10 s4.26 s3.80 s100%$0.090 19CodeSandbox25.56.37 s8.60 s6.37 s2.31 s100%$0.074^est 20Hopx0.069.33 s70.41 s0 ms0 ms6%$0.083

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.