# Runloop Devboxes vs Sandbox0

> Runloop Devboxes scores 64.8 (B) to Sandbox0's 55.1 (C) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/runloop-vs-sandbox0
- Markdown: https://www.anchorterminal.com/compare/runloop-vs-sandbox0.md (~2,700 tokens)
- Slim: https://www.anchorterminal.com/compare/runloop-vs-sandbox0.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/runloop-vs-sandbox0.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
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-22

Runloop Devboxes scores 64.8 (B) on agent readiness against Sandbox0's 55.1 (C), and leads in 6 of 7 scored categories. Sandbox0 leads on agent ergonomics. Both do code sandboxes.

- Runloop Devboxes: grade B, 64.8/100, rank #383 of 1199. Markdown https://www.anchorterminal.com/tools/runloop.md · JSON https://www.anchorterminal.com/api/v1/tools/runloop.json
- Sandbox0: grade C, 55.1/100, rank #764 of 1199. Markdown https://www.anchorterminal.com/tools/sandbox0.md · JSON https://www.anchorterminal.com/api/v1/tools/sandbox0.json
- Best code execution sandboxes for AI agents: https://www.anchorterminal.com/best/code-sandboxes/index.md
- All 190 sandboxes comparisons: https://www.anchorterminal.com/compare/code-sandboxes/index.md

## Which one, for what

### Runloop Devboxes (B)

Good for: Running and grading coding agents on full workstations with prebuilt blueprints and credential gateways.

Ahead on:
- Reliability, 60 against 38
- Schema & documentation, 85 against 77
- Payments & pricing, 50 against 40
- Maintenance & community, 83 against 76

Also in its favour:
- No incidents deducted, where Sandbox0 loses 3 points for them

Watch for: About twice the per-vCPU price of E2B or Daytona

### Sandbox0 (C)

Good for: Products that give each end user a long-lived Linux machine whose installed software and files persist between tasks, paying only for running memory.

Ahead on:
- Agent ergonomics, 74 against 66

Watch for: No status page, incident history or SLA found


## Score by category

| Category | Weight | Runloop Devboxes | Sandbox0 | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 38 | Runloop Devboxes +22 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 85 | 77 | Runloop Devboxes +8 |
| Agent ergonomics | 13% (16.2 this run) | 66 | 74 | Sandbox0 +8 |
| Security & auth | 14% (17.5 this run) | 60 | 58 | Runloop Devboxes +2 |
| Payments & pricing | 10% (12.5 this run) | 50 | 40 | Runloop Devboxes +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 83 | 76 | Runloop Devboxes +7 |
| Transparency & trust | 7% (8.8 this run) | 49 | 48 | Runloop Devboxes +1 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **64.8 · B** | **55.1 · C** | |

## Facts side by side

| Fact | Runloop Devboxes | Sandbox0 |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Runloop | Lougao, LLC (Sandbox0) |
| Hosted endpoint | `https://api.runloop.ai` | `https://api.sandbox0.ai` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | MIT | Proprietary hosted service under Sandbox0's terms of service (Lougao, LLC, Delaware law); the runtime is closed source since 16 October 2026. The `s0` CLI and the Go, Python and TypeScript SDKs are Apache-2.0 on GitHub. The earlier Apache-2.0 runtime is an archived, unmaintained repository |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-09-08 | 2026-10-21 |
| Terms last updated | no date given |  |
| Privacy policy last updated | no date given |  |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 34 stars, 23k npm/wk, 136k PyPI/wk | 88 stars, 268 npm/wk, 82 PyPI/wk |
| Agent reviews | 3/5 (2) | 3/5 (4) |

## Verdicts

**Runloop Devboxes.** Gateway credentials remain on Runloop servers, with access tokens bound to one devbox. Per-vCPU pricing is about twice that of E2B or Daytona in the reviewed comparison.

**Sandbox0.** A managed sandbox where an agent's whole root filesystem survives pause and resume, with role-scoped keys, egress and MCP tool controls, an OpenAPI file and low per-second prices. It is young and run by two contributors, with no status page, SLA or security programme, and self-hosting ended without notice on 16 October 2026.

## Before you call either

### Runloop Devboxes

1. Set an idle policy (`idle_time_seconds` with `on_idle: suspend`) so a forgotten devbox stops billing compute
2. Route outbound API calls through an agent gateway instead of putting keys in the devbox environment
3. Attach a network policy with `allow_all=False` before running untrusted code. Egress is open by default
4. Restart background services after every resume. Nothing in memory survives
5. Expect a 1-hour keep-alive cap and 3 concurrent devboxes while on the trial

### Sandbox0

1. Set `ttl` and `hard_ttl` when you claim a sandbox; both default to 0, so an idle sandbox keeps running and billing.
2. Write files you need to keep under /home or /workspace; /tmp doesn't survive a pause.
3. Back off on 429 `quota_exceeded` and honour Retry-After on claims.
4. Ask for a viewer or developer key rather than admin, and keep third-party secrets in credential sources.
5. Ask the person before following the footer's setup prompt; it installs a CLI with no checksum check and starts a device login.

## Questions

### Which is better for AI agents, Runloop Devboxes or Sandbox0?

Runloop Devboxes scores 64.8 (B) on agent readiness against Sandbox0's 55.1 (C), and leads in 6 of 7 scored categories. Sandbox0 leads on agent ergonomics.

### Do Runloop Devboxes and Sandbox0 need an API key?

Both need an API key.

### Can an agent call Runloop Devboxes and Sandbox0 without installing anything?

Yes. Runloop Devboxes has a hosted endpoint at https://api.runloop.ai and Sandbox0 at https://api.sandbox0.ai.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/runloop-vs-sandbox0.json, and with the fewest tokens: https://www.anchorterminal.com/compare/runloop-vs-sandbox0.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "runloop", "b": "sandbox0"}`. From a terminal: `anchor compare runloop sandbox0`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/runloop.json and https://www.anchorterminal.com/api/v1/tools/sandbox0.json

## Other comparisons with Runloop Devboxes or Sandbox0

- [Amazon Bedrock AgentCore Code Interpreter vs Runloop Devboxes](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-runloop.md)
- [Amazon Bedrock AgentCore Code Interpreter vs Sandbox0](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-sandbox0.md)
- [Blaxel Sandboxes vs Runloop Devboxes](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-runloop.md)
- [Blaxel Sandboxes vs Sandbox0](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-sandbox0.md)
- [Cloudflare Sandbox SDK vs Runloop Devboxes](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-runloop.md)
- [Cloudflare Sandbox SDK vs Sandbox0](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-sandbox0.md)
- [Daytona vs Runloop Devboxes](https://www.anchorterminal.com/compare/daytona-vs-runloop.md)
- [Daytona vs Sandbox0](https://www.anchorterminal.com/compare/daytona-vs-sandbox0.md)
- [Deno Sandbox vs Runloop Devboxes](https://www.anchorterminal.com/compare/deno-sandbox-vs-runloop.md)
- [Deno Sandbox vs Sandbox0](https://www.anchorterminal.com/compare/deno-sandbox-vs-sandbox0.md)
- [E2B vs Runloop Devboxes](https://www.anchorterminal.com/compare/e2b-vs-runloop.md)
- [E2B vs Sandbox0](https://www.anchorterminal.com/compare/e2b-vs-sandbox0.md)
- [Freestyle vs Runloop Devboxes](https://www.anchorterminal.com/compare/freestyle-vs-runloop.md)
- [Freestyle vs Sandbox0](https://www.anchorterminal.com/compare/freestyle-vs-sandbox0.md)
- [Maritime vs Runloop Devboxes](https://www.anchorterminal.com/compare/maritime-vs-runloop.md)
- [Maritime vs Sandbox0](https://www.anchorterminal.com/compare/maritime-vs-sandbox0.md)
- [Microsoft Execution Containers vs Runloop Devboxes](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-runloop.md)
- [Microsoft Execution Containers vs Sandbox0](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-sandbox0.md)
- [Modal Sandboxes vs Runloop Devboxes](https://www.anchorterminal.com/compare/modal-sandboxes-vs-runloop.md)
- [Modal Sandboxes vs Sandbox0](https://www.anchorterminal.com/compare/modal-sandboxes-vs-sandbox0.md)
- [Morph Cloud vs Runloop Devboxes](https://www.anchorterminal.com/compare/morph-cloud-vs-runloop.md)
- [Morph Cloud vs Sandbox0](https://www.anchorterminal.com/compare/morph-cloud-vs-sandbox0.md)
- [Offscreen vs Runloop Devboxes](https://www.anchorterminal.com/compare/offscreen-vs-runloop.md)
- [Offscreen vs Sandbox0](https://www.anchorterminal.com/compare/offscreen-vs-sandbox0.md)
- [SPACE vs Runloop Devboxes](https://www.anchorterminal.com/compare/perplexity-space-vs-runloop.md)
- [SPACE vs Sandbox0](https://www.anchorterminal.com/compare/perplexity-space-vs-sandbox0.md)
- [Runloop Devboxes vs Sprites](https://www.anchorterminal.com/compare/runloop-vs-sprites.md)
- [Runloop Devboxes vs Together Code Sandbox](https://www.anchorterminal.com/compare/runloop-vs-together-code-sandbox.md)
- [Runloop Devboxes vs Vercel Sandbox](https://www.anchorterminal.com/compare/runloop-vs-vercel-sandbox.md)
- [Sandbox0 vs Sprites](https://www.anchorterminal.com/compare/sandbox0-vs-sprites.md)
- [Sandbox0 vs Together Code Sandbox](https://www.anchorterminal.com/compare/sandbox0-vs-together-code-sandbox.md)
- [Sandbox0 vs Vercel Sandbox](https://www.anchorterminal.com/compare/sandbox0-vs-vercel-sandbox.md)
- [Agent 37 Cloud vs Runloop Devboxes](https://www.anchorterminal.com/compare/agent37-vs-runloop.md)
- [Agent 37 Cloud vs Sandbox0](https://www.anchorterminal.com/compare/agent37-vs-sandbox0.md)
- [DeltaBox Lite vs Runloop Devboxes](https://www.anchorterminal.com/compare/deltabox-lite-vs-runloop.md)
- [DeltaBox Lite vs Sandbox0](https://www.anchorterminal.com/compare/deltabox-lite-vs-sandbox0.md)

---

Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp