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MIOSA vs Cloudflare Sandboxes

Cloudflare's Sandbox SDK and MIOSA both run untrusted code for AI agents. This page compares them on the independent ComputeSDK benchmark and on the capabilities MIOSA documents.

MIOSA Cloudflare Sandboxes

What Cloudflare Sandboxes is

Cloudflare’s Sandbox SDK runs sandboxed code execution on Cloudflare’s edge, described in its public documentation at (developers.cloudflare.com/sandbox, as of October 2026).

Measured performance

The independent ComputeSDK benchmark runs the same workload against every provider. That is the only apples-to-apples number here.

MetricMIOSACloudflare SandboxesAs of
Burst startup, median time-to-interactive57.09 ms (#1 of 32)682.13 ms (#12)2026-10-23
DAX full build, 2026-08-2839.3 s (#1 of 19)no result2026-08-28
DAX full build, 2026-10-2338.8 s (#3 of 22)155.9 s (#21)2026-10-23

Source: ComputeSDK, via our benchmark page. Burst startup is the time from a create request to the first successful command inside a fresh sandbox, under 100 concurrent creates. Where a run is not listed, the provider did not appear in that run.

Capabilities side by side

Each Cloudflare Sandboxes answer comes from Cloudflare Sandboxes’s own documentation or pricing page, linked in the last column, fetched on 2026-10-23. Each MIOSA answer links the page that documents it. “Not documented” means the vendor’s docs do not say, not that the feature is missing.

CapabilityMIOSACloudflare SandboxesSource
IsolationFirecracker microVM by defaultContainers in a Firecracker microVMCloudflare Sandboxes docs
Sandbox lifetimeIdle timeout, 1 hour by default and up to 24 hours, extendable; computers persistStops after inactivity; inactivity timeout up to 6 hoursCloudflare Sandboxes docs
Pause, snapshots, forksYes: pause and resume, snapshots, restore and forkFilesystem snapshots (beta); no pause and resumeCloudflare Sandboxes docs
Full Linux desktop and computer useYes, ComputersNot documentedCloudflare Sandboxes docs
Public preview URL for a portYesYes, through your own WorkerCloudflare Sandboxes docs
Deploy to a production URLYes, Services and Docker Host, with releases and rollbackYes, deployed as a Worker with wranglerCloudflare Sandboxes docs
Managed databasesPostgres, MySQL, Redis, MongoDB, QdrantNot documented for SandboxesCloudflare Sandboxes docs
SDKsTypeScript, Python, Go, Elixir, Java, RustTypeScriptCloudflare Sandboxes docs
CLIYeswrangler; no sandbox-specific CLICloudflare Sandboxes docs
MCP serverYes, hostedNot documentedCloudflare Sandboxes docs
Bring your own cloudYes, AWS and Google CloudNot documented; runs in your Cloudflare accountCloudflare Sandboxes docs
BillingPer second while running, one price per sizeContainers pricing, in 10 ms stepsCloudflare Sandboxes docs
Regionsus-east, us-west, us-miaNot documentedCloudflare Sandboxes docs

Where MIOSA differs

These capabilities are documented for MIOSA on this site:

  • Persistent computers with a full Linux desktop, not only headless sandboxes. See Computers.
  • Deployments and Docker Host, so a machine becomes a versioned URL or a containerized app. See Deployments.
  • White-label platform, so your customers see your brand and domains. See White-label setup.
  • One interface for everyone: MCP, a CLI, and six SDKs. See MCP, CLI, SDKs.
  • Managed data with connection injection: Postgres, MySQL, Redis, MongoDB, Qdrant. See Data.
  • Regions and OpenComputers for machines you own. See Regions and OpenComputers.

When to choose each

  • Choose Cloudflare Sandboxes if you build on Cloudflare Workers and want code execution close to your edge compute and data.
  • Choose MIOSA if you want a runtime that covers sandboxes, full computers, agent runs, deployments, and managed data in one place, with a branded tenant surface and the measured startup figures above.

Sources

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