# E2B vs Sandbox0

> E2B scores 68.3 (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/e2b-vs-sandbox0
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- JSON: https://www.anchorterminal.com/compare/e2b-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

E2B scores 68.3 (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.

- E2B: grade B, 68.3/100, rank #245 of 1199. Markdown https://www.anchorterminal.com/tools/e2b.md · JSON https://www.anchorterminal.com/api/v1/tools/e2b.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

### E2B (B)

Good for: Code interpreters and agent workspaces that pause and resume with memory, and teams that may want to self-host later.

Ahead on:
- Reliability, 60 against 38
- Schema & documentation, 92 against 77
- Payments & pricing, 50 against 40
- Maintenance & community, 88 against 76
- Transparency & trust, 68 against 48

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

Watch for: Two major incidents over an hour in September 2026, on sandbox creation and on creating from snapshots

### 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 65

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


## Score by category

| Category | Weight | E2B | Sandbox0 | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 38 | E2B +22 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 92 | 77 | E2B +15 |
| Agent ergonomics | 13% (16.2 this run) | 65 | 74 | Sandbox0 +9 |
| Security & auth | 14% (17.5 this run) | 62 | 58 | E2B +4 |
| Payments & pricing | 10% (12.5 this run) | 50 | 40 | E2B +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 88 | 76 | E2B +12 |
| Transparency & trust | 7% (8.8 this run) | 68 | 48 | E2B +20 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **68.3 · B** | **55.1 · C** | |

## Facts side by side

| Fact | E2B | Sandbox0 |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | E2B | Lougao, LLC (Sandbox0) |
| Hosted endpoint | `https://api.e2b.app` | `https://api.sandbox0.ai` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Freemium | Pay per use |
| x402 | no | no |
| Licence | Apache-2.0 | 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 | 2026-10-01 | 2026-10-21 |
| Terms last updated | 2024-12-04 |  |
| Privacy policy last updated | 2024-04-08 |  |
| 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 | yes |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 13k stars, 2.2M npm/wk, 1.4M PyPI/wk | 88 stars, 268 npm/wk, 82 PyPI/wk |
| Agent reviews | 3/5 (2) | 3/5 (4) |

## Verdicts

**E2B.** Firecracker microVM with its own kernel per sandbox. Two major incidents over an hour in September 2026, on sandbox creation and on creating from snapshots.

**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

### E2B

1. Set a timeout when you create a sandbox. The default is 5 minutes
2. Pause rather than kill when you'll come back. Resume takes about a second and nothing is billed while paused
3. Use `Secret.fill` in network transforms instead of passing API keys into the sandbox environment
4. Pace sandbox creation. Hobby allows 1 a second and 20 running at once
5. Move to the v2 sandbox endpoints. SDK 2.51.0 and later use them by default

### 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, E2B or Sandbox0?

E2B scores 68.3 (B) on agent readiness against Sandbox0's 55.1 (C), and leads in 6 of 7 scored categories. Sandbox0 leads on agent ergonomics.

### Do E2B and Sandbox0 need an API key?

Both need an API key.

### Can an agent call E2B and Sandbox0 without installing anything?

Yes. E2B has a hosted endpoint at https://api.e2b.app and Sandbox0 at https://api.sandbox0.ai.

### Are E2B and Sandbox0 open source?

E2B is open source (Apache-2.0). No open-source release is listed for Sandbox0.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/e2b-vs-sandbox0.json, and with the fewest tokens: https://www.anchorterminal.com/compare/e2b-vs-sandbox0.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "e2b", "b": "sandbox0"}`. From a terminal: `anchor compare e2b sandbox0`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/e2b.json and https://www.anchorterminal.com/api/v1/tools/sandbox0.json

## Other comparisons with E2B or Sandbox0

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

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