CreateOS Sandbox vs Agent 37
Pick Agent 37 if you sell one persistent agent per customer and want a very low list price for always-on instances, with harness templates and billing plumbing included. Pick CreateOS Sandbox if you need micro-VM isolation by default, fork, SDKs in six languages, or egress allowlists by host, IP or CIDR.
Pricing at a Glance
CreateOS rates verified 17 October 2026. Agent 37 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
Agent 37
- Compute
- $0.0011 /vCPU-hr
- Memory
- See below
Agent 37 meters per minute from a prepaid wallet at $0.80 per vCPU, $0.70 per GB of RAM and $0.09 per GB of disk per 730-hour month, with Performance at 4x and VM instances at 2.5x compute, as of 17 October 2026.
Where CreateOS Sandbox Fits Better
What CreateOS Sandbox brings to this matchup, with a plain note on where Agent 37 has the edge.
Every sandbox is a Firecracker micro-VM with its own kernel; Agent 37 default instances use gVisor, with full VMs at 2.5x compute.
Fork a paused sandbox into many copies; Agent 37 documents backups and restore but no fork.
Per-sandbox egress allowlists by host, IP, CIDR or wildcard; Agent 37 does not publish allowlists.
Official SDKs in six languages; Agent 37 publishes a REST API and CLI but no language SDK.
Where Agent 37 is strong
Agent 37 has a very low published list price for always-on agent instances, about $4.76 a month for 2 vCPU / 4 GB, plus ready-made harness templates, per-instance model and tool billing, and a white-label dashboard for teams selling one agent per customer.
Which to Pick
Pick CreateOS Sandbox if
- Your threat model calls for a separate kernel per sandbox by default.
- You fan out from one prepared sandbox into many copies.
- Your buyers want SOC 2 Type II and ISO 27001 reports; Agent 37 lists SOC 2 Type I.
Pick Agent 37 if
- You run an always-on agent per end user and price is the deciding factor.
- You want Hermes, OpenClaw, Claude Code or Codex templates ready to launch.
- You need up to 16 vCPU / 32 GB per instance.
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 | Agent 37 |
|---|---|---|
| Isolation | Firecracker micro-VM with its own guest kernel | gVisor by default (vendor-stated); a VM instance type with its own kernel |
| Pause and resume | Saves disk, memory and CPU state; vCPU billing stops, memory and storage still bill | Auto-sleep stops compute and wakes on request; files persist; memory on sleep not published |
| Fork | Forks a paused sandbox into many independent copies | Not published; backups and restore documented |
| Outbound network default | Open with no rules; deny-by-default once any host, IP, CIDR or wildcard rule exists, enforced on the host outside the VM | Firewalled to the public internet only (vendor-stated); allowlists not published |
| Inbound access | Closed by default; opt-in HTTPS URL | HTTPS URL per port needing an API key or signed URL; optional public; custom domains |
| Largest size | 8 vCPU / 16 GB on Enterprise; 8 vCPU / 8 GB on Pro | 16 vCPU / 32 GB / 80 GB disk |
| Concurrency | 1 / 5 / 20 / 30 by plan (Free to Enterprise); paused sandboxes count | 1 before first top-up, 10 after, 50 after $100 and 200 after $250 in top-ups |
| Session length | No cap; optional idle auto-pause from 60 s to 24 h, off by default | No timeout; instances live until deleted (vendor-stated) |
| Billing | Per second: $0.03616363/vCPU-hr, $0.01159025/GiB-hr, $0.0001584/GB-hr storage; no egress fees, 50 GiB bandwidth budget per sandbox | Per minute: $0.80 per vCPU and $0.70 per GB RAM per 730-hour month; VM instances 2.5x compute |
| SDKs and interfaces | TypeScript, Go, Python, Rust, C#, Java (all but TypeScript pre-1.0), CLI, MCP, REST | REST API and CLI; no language SDK published |
Common Questions
What isolation does Agent 37 use by default?
Agent 37 default sandbox instances use gVisor and share hardware, according to its homepage; a separate VM instance type gives a full virtual machine with its own kernel at 2.5 times the compute price. Every CreateOS sandbox is a Firecracker micro-VM with its own guest kernel.
Why is Agent 37 so much cheaper per vCPU than CreateOS?
Agent 37 lists $0.80 per vCPU and $0.70 per GB of RAM per 730-hour month on shared default instances, about $4.76 a month for 2 vCPU / 4 GB always on. Dedicated cores cost 4x compute and VM instances 2.5x. CreateOS bills $0.03616363 per vCPU-hour for a micro-VM per sandbox.
Can I fork an Agent 37 instance?
Agent 37 documents automatic and on-demand backups with restore, but no fork or branch of a running instance is published. CreateOS Sandbox can fork a paused sandbox into many independent copies, each with its own id and IP.
Sources
Checked 17 October 2026.
See CreateOS Sandbox for yourself
Book a demo, or explore the Sandbox and its pricing.