CreateOS Sandbox vs Together Code Sandbox
Pick Together Code Sandbox if you already use Together AI for inference or training and want sandboxes for RL environments on the same account. Pick CreateOS Sandbox if you want to start without an access request, at lower per-hour rates, with an outbound allowlist you can read in the docs.
The together-sandbox SDK and CLI must be enabled for your organization by request to Together AI.
Pricing at a Glance
CreateOS rates verified 17 October 2026. Together Code Sandbox 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
Lower compute rate- Compute
- $0.0362 /vCPU-hr
- Memory
- $0.0116 /GiB-hr
Together Code Sandbox
- Compute
- $0.0446 /vCPU-hr
- Memory
- $0.0149 /GiB-hr
Together charges $0.0446 per vCPU-hour and $0.0149 per GiB-hour for Code Sandbox, and $0.03 per 60-minute Code Interpreter session, as of 17 October 2026.
Where CreateOS Sandbox Fits Better
What CreateOS Sandbox brings to this matchup, with a plain note on where Together Code Sandbox has the edge.
Self-serve sign-up with a Free plan; Together enables its sandbox SDK per organization on request.
Lower rates: $0.03616363 per vCPU-hour and $0.01159025 per GiB-hour against $0.0446 and $0.0149.
Where Together Code Sandbox is strong
Together offers sandboxes from the same vendor that serves open-model inference and GPU clusters, with snapshots built remotely from any Docker image or Dockerfile and optional memory snapshots at termination, aimed at RL rollouts and agent tool calls.
Which to Pick
Pick CreateOS Sandbox if
- You want to start today without an access request.
- You need documented egress controls and concurrency limits.
Pick Together Code Sandbox if
- Your inference or training already runs on Together AI.
- You need up to 16 cores and 128 GB of memory per sandbox.
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 | Together Code Sandbox |
|---|---|---|
| Isolation | Firecracker micro-VM with its own guest kernel, root filesystem and network identity | VM per sandbox; hypervisor not named for the new SDK |
| Pause and resume | Saves disk, memory and CPU state; vCPU stops billing while paused, memory and storage still bill | Ephemeral by default; a termination policy can snapshot the filesystem, optionally with memory |
| Fork | Fork a paused sandbox into many independent copies, each with its own id and IP | Create new sandboxes from any snapshot alias; no live fork 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 | Not published |
| Largest size | 8 vCPU / 16 GB on Enterprise (Pro 8 vCPU / 8 GB, Beginner 4 / 4, Free 1 / 1) | 16 CPU cores with 1 to 8 GB per core (up to 128 GB) |
| Session length | No lifetime cap; optional idle auto-pause from 60 s to 24 h, off by default | No automatic limit unless a ttl is set |
| 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 | $0.0446 per vCPU-hour and $0.0149 per GiB-hour |
Common Questions
How do I get access to Together Code Sandbox?
You ask Together AI to enable it: the together-sandbox SDK and CLI must be turned on for your organization by contact. CreateOS Sandbox needs no request; the Free plan comes with 500 credits and no card.
What does Together Code Sandbox cost per hour?
$0.0446 per vCPU-hour and $0.0149 per GiB of RAM per hour, per Together's pricing page. CreateOS Sandbox lists $0.03616363 per vCPU-hour and $0.01159025 per GiB-hour, billed per second on every plan.
Can Together Code Sandbox save memory when it stops?
Yes, through a termination policy that snapshots the filesystem and can include memory under an alias, so a new sandbox continues from it. CreateOS Sandbox pause saves disk, memory and CPU state and can resume the same sandbox or fork it into copies.
Sources
Checked 17 October 2026.
See CreateOS Sandbox for yourself
Book a demo, or explore the Sandbox and its pricing.