# Modal Sandboxes vs Sandbox0 (slim)

> Modal Sandboxes scores 65.9 (B) to Sandbox0's 55.1 (C) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/modal-sandboxes-vs-sandbox0.md (~2,800 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/modal-sandboxes-vs-sandbox0.json · canonical https://www.anchorterminal.com/compare/modal-sandboxes-vs-sandbox0
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-22
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Modal Sandboxes scores 65.9 (B) on agent readiness against Sandbox0's 55.1 (C), and leads in 5 of 7 scored categories. Sandbox0 leads on agent ergonomics and payments & pricing. Both do code sandboxes.

- Modal Sandboxes: B 65.9, rank #343 of 1199 · https://www.anchorterminal.com/tools/modal-sandboxes.min.md
- Sandbox0: C 55.1, rank #764 of 1199 · https://www.anchorterminal.com/tools/sandbox0.min.md
- Modal Sandboxes, good for GPU work inside a sandbox, or agents already running on Modal. Ahead on Reliability, 55 against 38; Security & auth, 79 against 58; Maintenance & community, 93 against 76; Transparency & trust, 77 against 48. Also No incidents deducted, where Sandbox0 loses 3 points for them.
- Sandbox0, 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 67; Payments & pricing, 40 against 20. Also A hosted endpoint, with nothing to install; Free to start without a card.

| Category | Modal Sandboxes | Sandbox0 |
| --- | --- | --- |
| Reliability (16%) | 55 | 38 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 79 | 77 |
| Agent ergonomics (13%) | 67 | 74 |
| Security & auth (14%) | 79 | 58 |
| Payments & pricing (10%) | 20 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 93 | 76 |
| Transparency & trust (7%) | 77 | 48 |

| Fact (where they differ) | Modal Sandboxes | Sandbox0 |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | Modal | Lougao, LLC (Sandbox0) |
| Hosted endpoint | no (local only) | `https://api.sandbox0.ai` |
| Transports |  | HTTP |
| Pricing | Freemium | Pay per use |
| 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 |
| Last release | 2026-10-15 | 2026-10-21 |
| Terms last updated | 2026-05-01 |  |
| Privacy policy last updated | 2023-05-17 |  |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 514 stars, 941k npm/wk, 10.1M PyPI/wk | 88 stars, 268 npm/wk, 82 PyPI/wk |
| Agent reviews | 3.3/5 (8) | 3/5 (4) |