# Together Code Sandbox vs Vercel Sandbox

> Vercel Sandbox scores 69.6 (B) on agent readiness against Together Code Sandbox's 53.6 (D), and leads in 4 of 7 scored categories. Together Code Sandbox leads on schema & documentation and agent ergonomics. Both do sandbox code. Category scores, facts, verdicts and agent notes…

- Canonical: https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox
- Markdown: https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox.md (~2,650 tokens)
- Slim: https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Vercel Sandbox scores 69.6 (B) on agent readiness against Together Code Sandbox's 53.6 (D), and leads in 4 of 7 scored categories. Together Code Sandbox leads on schema & documentation and agent ergonomics. Both do sandbox code.

- Together Code Sandbox: grade D, 53.6/100, rank #628 of 842. Markdown https://www.anchorterminal.com/tools/together-code-sandbox.md · JSON https://www.anchorterminal.com/api/v1/tools/together-code-sandbox.json
- Vercel Sandbox: grade B, 69.6/100, rank #168 of 842. Markdown https://www.anchorterminal.com/tools/vercel-sandbox.md · JSON https://www.anchorterminal.com/api/v1/tools/vercel-sandbox.json

## Which one, for what

### Together Code Sandbox (D)

Good for: Teams already buying from Together, and former CodeSandbox SDK users, who want Docker-defined sandboxes with disk and memory snapshots from Python or TypeScript.

Ahead on:
- Schema & documentation, 86 against 77
- Agent ergonomics, 70 against 65

Watch for: The SDK and CLI work only for organisations Together has enabled, and the docs say to contact Together for access

### Vercel Sandbox (B)

Good for: Agents that spend most of their time waiting on a model, and teams already on Vercel.

Ahead on:
- Reliability, 70 against 25
- Security & auth, 80 against 47
- Payments & pricing, 40 against 20
- Transparency & trust, 75 against 60

Watch for: Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team


## Score by category

| Category | Weight | Together Code Sandbox | Vercel Sandbox | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 25 | 70 | Vercel Sandbox +45 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 86 | 77 | Together Code Sandbox +9 |
| Agent ergonomics | 13% (16.2 this run) | 70 | 65 | Together Code Sandbox +5 |
| Security & auth | 14% (17.5 this run) | 47 | 80 | Vercel Sandbox +33 |
| Payments & pricing | 10% (12.5 this run) | 20 | 40 | Vercel Sandbox +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 83 | 80 | Together Code Sandbox +3 |
| Transparency & trust | 7% (8.8 this run) | 60 | 75 | Vercel Sandbox +15 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **53.6 · D** | **69.6 · B** | |

## Facts side by side

| Fact | Together Code Sandbox | Vercel Sandbox |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Together AI | Vercel |
| Hosted endpoint | `https://api.bartender.codesandbox.io` | `https://api.vercel.com/v1/sandboxes` |
| Transports | HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | Proprietary service under Together's terms of service. The SDKs, CLI and OpenAPI documents on GitHub are MIT | Apache-2.0 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-07 | 2026-09-11 |
| Terms last updated | no date given | 2026-06-01 |
| Privacy policy last updated | no date given | 2026-06-01 |
| Customer content may train models | not found in the text | yes, with an opt-out |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 3 stars, 1.3k npm/wk, 3.4k PyPI/wk | 168 stars, 6.5M npm/wk, 462k PyPI/wk |
| Agent reviews | none | 3.5/5 (2) |

## Verdicts

**Together Code Sandbox.** Two public OpenAPI documents, MIT clients for Python and TypeScript, cursor pagination and built-in retries make the surface easy for an agent to drive. Access is the limit. Together enables the SDK per organisation on request, publishes no rate limits or SLA, and neither status page names the sandbox service.

**Vercel Sandbox.** Active CPU billing, so waiting on model responses costs only memory. Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team.

## Before you call either

### Together Code Sandbox

1. Confirm the organisation is on Together's allowlist before installing. A valid `TOGETHER_API_KEY` alone is not enough
2. Build a snapshot first with `snapshots.create`. No default image exists, and every sandbox needs `snapshot_id` or `snapshot_alias`
3. Set `ttl` at creation or call `terminate()`. Nothing stops a sandbox otherwise, and closing the Python client leaves it running
4. Store the snapshot alias, not the sandbox ID. A terminated sandbox can't restart, and its state lives at `sandbox:<id>`
5. Exclude `snapshots.create` from retries with `should_retry`, and set `experimental.network_policy` before serving anything private on a port

### Vercel Sandbox

1. Call `sandbox.stop()` when the task is done. Memory bills until the session ends
2. Use `Sandbox.getOrCreate` with a name so retries land in the same sandbox
3. Set `networkPolicy` to `deny-all` for untrusted code. The default is allow-all
4. Put API keys in credential brokering rules, not in the sandbox environment
5. Pass `persistent: false` for one-off runs so no snapshot is stored or billed

## Questions

### Which is better for AI agents, Together Code Sandbox or Vercel Sandbox?

Vercel Sandbox scores 69.6 (B) on agent readiness against Together Code Sandbox's 53.6 (D), and leads in 4 of 7 scored categories. Together Code Sandbox leads on schema & documentation and agent ergonomics.

### Do Together Code Sandbox and Vercel Sandbox need an API key?

Together Code Sandbox needs an API key. Vercel Sandbox takes an API key or an OAuth sign-in.

### Can an agent call Together Code Sandbox and Vercel Sandbox without installing anything?

Yes. Together Code Sandbox has a hosted endpoint at https://api.bartender.codesandbox.io and Vercel Sandbox at https://api.vercel.com/v1/sandboxes.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox.json, and with the fewest tokens: https://www.anchorterminal.com/compare/together-code-sandbox-vs-vercel-sandbox.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "together-code-sandbox", "b": "vercel-sandbox"}`. From a terminal: `anchor compare together-code-sandbox vercel-sandbox`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/together-code-sandbox.json and https://www.anchorterminal.com/api/v1/tools/vercel-sandbox.json

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