CreateOS Sandbox vs CodeSandbox SDK
Stay on the CodeSandbox SDK if you already use it for AI IDE dev environments that fork with their dev server running. Pick CreateOS Sandbox for a new integration, since Together's docs mark the SDK as legacy and its public pricing and limits could not be read, while CreateOS publishes both.
CodeSandbox is now a Together AI company, and Together's docs mark this SDK as legacy and point new users to together-sandbox.
Pricing at a Glance
CreateOS rates verified 17 October 2026. CodeSandbox SDK 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
CodeSandbox SDK
Pricing not published in a readable form: codesandbox.io/pricing blocked automated fetches, and Together offers the legacy SDK on custom plans only, as of 17 October 2026.
Where CreateOS Sandbox Fits Better
What CreateOS Sandbox brings to this matchup, with a plain note on where CodeSandbox SDK has the edge.
Per-second rates and per-plan limits are published: $0.03616363 per vCPU-hour, up to 30 concurrent sandboxes.
SDKs in TypeScript, Go, Python, Rust, C# and Java, where the CodeSandbox SDK is TypeScript only.
Where CodeSandbox SDK is strong
CodeSandbox snapshots include running processes, so a sandbox forked from a template already has its dev server up, with Dev Container support and VM tiers up to 64 CPU / 128 GiB.
Which to Pick
Pick CreateOS Sandbox if
- You are starting a new integration and want a product that is not marked legacy.
- You need published prices and limits, or an SDK beyond TypeScript.
Pick CodeSandbox SDK if
- You already run on CodeSandbox and need live dev servers forked from a template.
- You need VM tiers up to 64 CPU / 128 GiB.
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 | CodeSandbox SDK |
|---|---|---|
| Isolation | Firecracker micro-VM with its own guest kernel, root filesystem and network identity | Firecracker microVM, with the workload in a Docker container inside when a devcontainer is set |
| Pause and resume | Saves disk, memory and CPU state; vCPU stops billing while paused, memory and storage still bill | Memory and filesystem snapshots; hibernate and resume from snapshot |
| Fork | Fork a paused sandbox into many independent copies, each with its own id and IP | Create from a template forks a memory and filesystem snapshot; cloning in about 2 seconds (vendor-stated) |
| 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 | Not published |
| Largest size | 8 vCPU / 16 GB on Enterprise (Pro 8 vCPU / 8 GB, Beginner 4 / 4, Free 1 / 1) | XLarge tier 64 CPU / 128 GiB / 50 GB disk (SDK source); plan availability not verified |
| 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 | Not published in a readable form; billed to the CodeSandbox workspace that owns the token |
| SDKs and interfaces | TypeScript, Go, Python, Rust, C#, Java (all but TypeScript pre-1.0), CLI, MCP, REST | TypeScript SDK and CodeSandbox CLI |
Common Questions
Is the CodeSandbox SDK deprecated?
Together AI's docs mark it as legacy and point new users to the together-sandbox SDK, though codesandbox.io still offers it self-serve per those docs. CreateOS Sandbox is an active, self-serve product with six SDKs, a CLI, MCP and REST.
Can a CodeSandbox fork keep a dev server running?
Yes. Creating from a template forks a memory and filesystem snapshot, so processes such as dev servers continue. CreateOS Sandbox does the same from a paused sandbox: fork clones disk, memory and CPU state into an independent child.
Where is CodeSandbox SDK pricing published?
On codesandbox.io/pricing, which blocked automated fetches for this comparison, so its rates and limits are not shown here. CreateOS Sandbox publishes $0.03616363 per vCPU-hour and $0.01159025 per GiB-hour, billed per second, the same on every plan.
Sources
Checked 17 October 2026.
See CreateOS Sandbox for yourself
Book a demo, or explore the Sandbox and its pricing.