CreateOS Sandbox vs Modelence
Modelence is a good fit for founders who want an AI builder, an opinionated TypeScript framework and hosting from one vendor. CreateOS Sandbox is a fit for teams building their own agent who need an isolated place to run the code it writes, in any language. Modelence gives you an app; CreateOS gives your agent a machine.
Pricing at a Glance
CreateOS rates verified 17 October 2026. Modelence 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
Modelence
Modelence plans are Free $0, Starter $20/month, Pro $100/month and Scale $500/month with matching usage, and instances cost $0.013/hour (0.25 vCPU/0.5 GB) to $0.28/hour (4 vCPU/16 GB), as of 17 October 2026.
Where CreateOS Sandbox Fits Better
What CreateOS Sandbox brings to this matchup, with a plain note on where Modelence has the edge.
Per-second billing, compared with Modelence's hourly instance rates.
Language-neutral tooling: devbox:1 ships Python, Node.js, Bun, Go and Rust, where Modelence centres on its TypeScript framework.
Documented isolation and outbound allowlists, neither of which Modelence publishes.
Runtime forks of a paused sandbox; Modelence offers separate sandbox and production environments per app instead.
Where Modelence is strong
One product covers framework, hosting, auth, database and monitoring, so an app made by the AI builder lands on production infrastructure with no extra setup.
Which to Pick
Pick CreateOS Sandbox if
- You are building your own agent and need a code runner
- Your agent writes Python, Go or Rust as well as TypeScript
- You need egress limits on every execution environment
Pick Modelence if
- You want an AI builder that produces a hosted TypeScript app
- You want MongoDB, Postgres or Redis managed alongside the app
- You want up to 17 AWS regions (Pro and Scale)
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 | Modelence |
|---|---|---|
| Built for | API-created sandboxes for agent-written and untrusted code | Full-stack web apps built with an open-source TypeScript framework or the AI App Builder |
| Isolation | Firecracker micro-VM with its own guest kernel | Not published |
| Ephemeral per-run environments | Yes. Create a sandbox per task by API, SDK, CLI or MCP and destroy it after | Separate sandbox and production environments per app; no runtime fork published |
| Pause and resume | Yes. Saves disk, memory and CPU state; vCPU stops billing while paused, memory and storage still bill | Not published; Free instances sleep when idle |
| Outbound network | Open with no rules; deny-by-default once any rule exists (host, IP, CIDR, wildcard), 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 egress fees (50 GiB bandwidth budget per sandbox by default) | Hourly per instance size plus a monthly plan with matching included usage |
| Run untrusted code | Yes, the core use case; each sandbox is its own micro-VM | Not published as a use case |
Common Questions
How does Modelence bill App Builder usage?
Its FAQ says App Builder overage is billed at Anthropic API rates with no markup, on top of a monthly plan whose price is matched by included usage. CreateOS Sandbox pricing covers sandbox vCPU, memory and storage, billed per second at the same rates on every plan.
Is Modelence open source?
The Modelence TypeScript framework is open source on GitHub, though its licence is not stated on the pages consulted; hosting is managed. For CreateOS, the MCP server is open source, and self-hosting the sandbox platform is an Enterprise option onboarded by the CreateOS team.
How big can a Modelence instance be?
The largest Modelence instance, X-Large Plus, is 4 vCPU / 16 GB, with plan-level totals of 4, 16 or 64 vCPU. The largest CreateOS sandbox is 8 vCPU / 16 GB on Enterprise and 8 vCPU / 8 GB on Pro.
Sources
Checked 17 October 2026.
See CreateOS Sandbox for yourself
Book a demo, or explore the Sandbox and its pricing.