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Sandboxer vs Bitbucket Pipelines

Bitbucket Pipelines is CI/CD inside Bitbucket Cloud: each step runs in a Docker image, sized from 1x (2 vCPU, 4 GB) up to 32x, billed in build minutes. It is for repository pipelines, not interactive machines. Pick Pipelines for Bitbucket repos; pick Sandboxer for VMs an agent can drive.

Checked against Bitbucket Pipelines' public docs on October 24, 2026. Sources are linked in the table and listed below.

At a glance

Sandboxer and Bitbucket Pipelines compared
CapabilitySandboxerBitbucket Pipelines
IsolationmicroVM
Cloud Hypervisor, its own kernel
Docker container per step
Full Linux with root
Ubuntu 24.04, sudo, systemd
Docker inside
Preinstalled
Service containers can run alongside a step.
Nested virtualization (/dev/kvm)
Pause and resume with memory
Running processes come back
Fork a sandbox
Copy-on-write disk copy that boots fresh
HTTPS URL per port
Private with a token, or public
Longest sessionNo limit on paid plans
Auto-stop is up to 30 days or off
BillingPer second, flat rate per size
Stopped sandboxes are free
build minutes, multiplied by step size
A 5-minute step on a 2x runner counts as 10 build minutes; 1,000 more minutes cost $10/month (the page is ambiguous whether that also covers storage).
GPUs
Self-host or open sourcepartial
Steps can target self-hosted runners with runs-on.
RegionsUS East (Virginia) and EU Central (Finland)

= not documented publicly.

Where Bitbucket Pipelines is strong

  • It is built into Bitbucket Cloud.
  • Step sizes scale from 1x to 32x (4x and above need a paid plan).
  • Self-hosted runners are supported through runs-on.
  • Service containers run next to a step.

Where Sandboxer differs

  • Pipelines is triggered by repo events and ends; Sandboxer sandboxes persist and can pause.
  • Pipelines has no stated root VM, nested KVM or fork.
  • Pipelines bills build minutes in plan allowances; Sandboxer bills machine time per second.
  • Pipelines is tied to Bitbucket.

Pick Bitbucket Pipelines if

  • Your code is on Bitbucket and you want CI inside it.
  • You want self-hosted runners for private networks.
  • You want build minutes bundled with a Bitbucket plan.

Pick Sandboxer if

  • You need a full Ubuntu VM with root, systemd and Docker inside a microVM with its own kernel.
  • You want stop/resume that keeps running processes and memory, and forks from disk snapshots.
  • You want coding agents (Claude Code, Codex and others) preinstalled and driven through a prompt API.

Sources

Products change. If something here is out of date, email hello@sandboxer.com and we'll fix it. Bitbucket Pipelines is a trademark of its owner. Sandboxer is an independent product and is not affiliated with Bitbucket Pipelines.

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