Sandboxer vs AWS CodeBuild

AWS CodeBuild runs build projects on EC2 or Lambda compute in your AWS account and bills per build minute (EC2) or second (Lambda). It is a CI service, not an interactive environment. Pick it for builds inside AWS; pick Sandboxer for long-lived workspaces and agents.

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

At a glance

Sandboxer and AWS CodeBuild compared
Capability	Sandboxer	AWS CodeBuild
Isolation	microVM Cloud Hypervisor, its own kernel	container on EC2 or Lambda compute A runtime image runs on top of the chosen compute platform.
Full Linux with root	Ubuntu 24.04, sudo, systemd
Docker inside	Preinstalled	Docker daemon is enabled for non-VPC builds; VPC builds need privileged mode.
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 session	No limit on paid plans Auto-stop is up to 30 days or off	36 hours Build timeout is 5 to 2,160 minutes.
Billing	Per second, flat rate per size Stopped sandboxes are free	per minute (EC2), per second (Lambda) e.g. general1.small $0.005/min; 100 free build minutes/month.
GPUs		partial Linux GPU compute types exist; default concurrency quota is 0 and must be raised.
Self-host or open source
Regions	US East (Virginia) and EU Central (Finland)	multiple AWS Regions Availability of each environment type varies by Region.

= not documented publicly.

Where AWS CodeBuild is strong

Builds run inside your own AWS account with IAM, VPC and S3 integration.
Build timeout of up to 36 hours and a monthly free tier.
On-demand, Lambda and reserved-capacity fleets including ARM, Windows, macOS and GPU types.

Where Sandboxer differs

CodeBuild is a one-shot build runner; a Sandboxer sandbox is a persistent VM you can SSH into, stop and resume.
CodeBuild bills in per-minute (EC2) increments by compute type; Sandboxer bills per second by size.
CodeBuild builds time out after at most 36 hours; Sandboxer sandboxes on a paid plan can run with no time limit.

Pick AWS CodeBuild if

Your CI already lives in AWS and needs IAM and VPC integration.
You need Windows, macOS, ARM or GPU build environments.
You need reserved build fleets.

Pick Sandboxer if

You need a full Ubuntu 24.04 VM with root, systemd, Docker and nested KVM rather than a container or job runner.
You want stop to save memory and disk and resume to bring running processes back, with stopped sandboxes costing nothing.
You want coding agents (Claude Code, Codex, OpenCode and others) preinstalled and driven through a prompt API, with per-second billing.

Sources

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

Other comparisons

Sandboxer vs E2B

Firecracker microVMs with memory-preserving pause and fork, and an open-source stack.

Compare

Sandboxer vs Daytona

Many sandbox classes, from containers to VMs, Windows and GPUs.

Compare

Sandboxer vs Modal

Massive scale and GPUs for short-lived sandboxes, gVisor by default.

Compare

Sandboxer vs Vercel Sandbox

Firecracker microVMs billed on active CPU, inside the Vercel platform.

Compare

All 201 comparisons