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Sandboxer vs Claude Managed Agents (Anthropic)

Claude Managed Agents is Anthropic's beta API: you define an agent and environment, and each session gets a fresh Ubuntu 24.04 Linux container with preinstalled languages, billed on tokens plus session runtime. It is Claude-only and agent-centric, not a general VM. Pick it for a fully managed Claude agent loop; pick Sandboxer for a full VM with root, Docker, nested KVM and multiple coding agents.

Checked against Claude Managed Agents (Anthropic)'s public docs on October 24, 2026. Sources are linked in the table and listed below.

At a glance

Sandboxer and Claude Managed Agents (Anthropic) compared
CapabilitySandboxerClaude Managed Agents (Anthropic)
IsolationmicroVM
Cloud Hypervisor, its own kernel
Linux container on Anthropic-managed infrastructure
Self-hosted sandboxes are also supported on your own infrastructure.
Full Linux with root
Ubuntu 24.04, sudo, systemd
Not stated on the official pages checked.
Docker inside
Preinstalled
partial
docker is listed with 'limited availability'.
Nested virtualization (/dev/kvm)
Not stated on the official pages checked.
Pause and resume with memory
Running processes come back
Not stated on the official pages checked.
Fork a sandbox
Copy-on-write disk copy that boots fresh
Each session gets its own sandbox and sessions do not share filesystem state.
HTTPS URL per port
Private with a token, or public
Not stated on the official pages checked.
Longest sessionNo limit on paid plans
Auto-stop is up to 30 days or off
Idle time is not billed; no explicit cap seen.
BillingPer second, flat rate per size
Stopped sandboxes are free
tokens plus $0.08 per session-hour (running status only)
Idle time not billed; replaces separate container-hour billing.
GPUs
Not stated on the official pages checked.
Self-host or open sourcepartial
Self-hosted sandboxes run on your infrastructure; the agent loop stays with Anthropic.
RegionsUS East (Virginia) and EU Central (Finland)
Only inference geo pinning (us, 1.1x tokens) is documented.

= not documented publicly.

Published prices

Sandboxer
$0.036/hour
Flat per-second rate for the default size
Claude Managed Agents (Anthropic)
$0.080/hour
$0.08 per session-hour runtime (sandbox up to 8 GB, not a 4 vCPU / 8 GB spec); model tokens billed separately

List prices from each provider's pricing page, before free credits, plans and storage. This compares price only.

Where Claude Managed Agents (Anthropic) is strong

  • Fully managed agent loop with Claude models, tools and event streaming.
  • Preinstalled Python, Node, Go, Rust, Java, Ruby, PHP, C/C++ plus Chromium and Playwright.
  • Limited-network mode with allowed-host lists and package-manager allowlists.
  • Idle time is not billed; self-hosted sandboxes available.

Where Sandboxer differs

  • Managed Agents is Claude-only; Sandboxer runs Claude Code, Codex, OpenCode and others.
  • Sandbox is a container up to 8 GB RAM and 10 GB disk; Sandboxer VMs reach 32 GB RAM (xlarge, on the $100 plan or higher) with root and systemd.
  • Managed Agents is in beta with a required beta header.
  • Sandboxer has no per-token charge; you bring your agent's model access.

Pick Claude Managed Agents (Anthropic) if

  • You want Anthropic to run and scale the Claude agent loop for you.
  • You want built-in tools, permission policies and event streaming with minimal setup.
  • Your tasks fit in a container of 8 GB / 10 GB.

Pick Sandboxer if

  • Sandboxer gives each sandbox a full Ubuntu 24.04 VM with root, systemd and Docker preinstalled.
  • Sandboxer stop/resume keeps memory and running processes.
  • Sandboxer exposes any port as an HTTPS URL and bundles Claude Code, Codex and other coding agents.

Sources

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

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