CreateOS Sandbox vs Opensteer
Opensteer suits developers who want Codex, Claude Code or Cursor to automate websites, starting on their own Chrome and moving to the cloud when needed. CreateOS Sandbox suits teams that need written limits before they commit: isolation model, concurrency per plan, session length and per-second rates are all published.
Pricing at a Glance
CreateOS rates verified 17 October 2026. Opensteer pricing as published on 17 October 2026. Rates billed per GB rather than per GiB, or as bundled sizes, are quoted as published rather than converted.
CreateOS Sandbox
- Compute
- $0.0362 /vCPU-hr
- Memory
- $0.0116 /GiB-hr
Opensteer
Browser runtime and computer runtime each cost $0.20 per hour, with managed models at API pricing, on plans from Developer ($0, $5/month platform credits) to Business at $200/month, as of 17 October 2026.
Where CreateOS Sandbox Fits Better
What CreateOS Sandbox brings to this matchup, with a plain note on where Opensteer has the edge.
Published concurrency per plan (1, 5, 20, 30) and no session lifetime cap; Opensteer publishes neither figure.
Coding agents come preinstalled: devbox:1 and desktop:1 carry OpenCode, Claude Code, Pi, Cursor CLI and Codex.
Firecracker micro-VM isolation is described in the security docs.
Where Opensteer is strong
A coding agent can drive the user's own local Chrome or an Opensteer Cloud browser through the same short Python commands, and project folders supply task-specific tools.
Which to Pick
Pick CreateOS Sandbox if
- You need published concurrency, session and isolation details for a review.
- You want coding agents to run in a remote VM with their own shell.
- You need egress rules on agent traffic.
Pick Opensteer if
- You want your existing coding agent to automate websites from your own machine first.
- You want an MIT-licensed local runtime.
- You want specialised agents run on schedules in Opensteer's cloud.
Head-to-Head Comparison
Every dimension side by side, checked on 17 October 2026 against each vendor's own docs and pricing pages. "Not published" means we could not find it on the vendor's pages, not that the feature is missing.
| Dimension | CreateOS Sandbox | Opensteer |
|---|---|---|
| What you get (browser vs full Linux machine) | Full Linux micro-VM; the desktop:1 image adds an XFCE desktop, Google Chrome and a computer-use API | Python runtime and CLI that drive local Chrome or cloud browsers, plus a hosted agent platform |
| Isolation | Firecracker micro-VM with its own guest kernel, root filesystem and network identity | Not published |
| Session length | No lifetime cap; optional idle auto-pause from 60 s to 24 h, off by default | Not published |
| Run arbitrary code | Yes: exec, shell, files and managed processes; devbox:1 ships Python 3.12, Node.js 24, Go, Rust and Docker | Cloud computer runtime offered at $0.20/hour; its specification is not published |
| Outbound network | Open with no rules; deny-by-default once any host, IP, CIDR or wildcard rule exists, enforced on the host outside the VM | Not published |
| Billing | Per second: $0.03616363/vCPU-hr, $0.01159025/GiB-hr, storage $0.0001584/GB-hr; no per-GB egress price, 50 GiB bandwidth budget per sandbox | Browser and computer runtime $0.20/hour each; Developer $0 to Business $200/mo |
| Pause and resume | Pause saves disk, memory and CPU state; vCPU stops billing, memory and storage still bill | Cloud browser profiles and named, reusable sessions; pause not published |
| Interfaces | SDKs in TypeScript, Go, Python, Rust, C# and Java (all but TypeScript pre-1.0), CLI, MCP server, REST API | Python helper library and opensteer CLI; MCP not published |
Common Questions
Does Opensteer publish session or concurrency limits?
No. Its pricing and open-source pages do not state concurrency, session length or isolation, and no public docs site was found. CreateOS publishes all three: 1 to 30 concurrent sandboxes by plan, no lifetime cap, and Firecracker micro-VM isolation.
Can Claude Code or Codex use Opensteer and CreateOS?
Yes. Opensteer is designed for coding agents such as Codex, Claude Code and Cursor to drive browsers. CreateOS's devbox:1 and desktop:1 images have OpenCode, Claude Code, Pi, Cursor CLI and Codex on the PATH, so the agent itself runs inside the sandbox.
Is Opensteer open source?
Its local runtime is, under the MIT license on GitHub, while the cloud is managed. CreateOS Sandbox is a managed service, with self-hosting only for Enterprise customers through the CreateOS team.
Sources
Checked 17 October 2026.
See CreateOS Sandbox for yourself
Book a demo, or explore the Sandbox and its pricing.