# Blaxel Sandboxes vs Sprites

> Blaxel Sandboxes scores 60.7 (C) on agent readiness against Sprites's 58.3 (C), and leads in 6 of 7 scored categories. Sprites leads on reliability. Both do sandbox code. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-sprites
- Markdown: https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-sprites.md (~2,600 tokens)
- Slim: https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-sprites.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-sprites.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

Blaxel Sandboxes scores 60.7 (C) on agent readiness against Sprites's 58.3 (C), and leads in 6 of 7 scored categories. Sprites leads on reliability. Both do sandbox code.

- Blaxel Sandboxes: grade C, 60.7/100, rank #450 of 842. Markdown https://www.anchorterminal.com/tools/blaxel-sandboxes.md · JSON https://www.anchorterminal.com/api/v1/tools/blaxel-sandboxes.json
- Sprites: grade C, 58.3/100, rank #528 of 842. Markdown https://www.anchorterminal.com/tools/sprites.md · JSON https://www.anchorterminal.com/api/v1/tools/sprites.json

## Which one, for what

### Blaxel Sandboxes (C)

Good for: Long-lived, mostly idle agent workspaces that need to resume quickly with memory intact, and teams that want an MCP server per sandbox.

Ahead on:
- Schema & documentation, 80 against 74
- Security & auth, 64 against 59
- Payments & pricing, 40 against 30
- Maintenance & community, 85 against 80
- Transparency & trust, 65 against 59

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: 25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour

### Sprites (C)

Good for: Agents that need a long-lived machine with installed tools and files kept between sessions, and rollback by checkpoint.

Ahead on:
- Reliability, 55 against 35

Watch for: Four Sprites incidents on the status page in 90 days, including a partial outage of 7 hours 28 minutes on 23 September 2026 and failed creates outside Europe for 28 minutes on 8 October


## Score by category

| Category | Weight | Blaxel Sandboxes | Sprites | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 35 | 55 | Sprites +20 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 80 | 74 | Blaxel Sandboxes +6 |
| Agent ergonomics | 13% (16.2 this run) | 70 | 68 | Blaxel Sandboxes +2 |
| Security & auth | 14% (17.5 this run) | 64 | 59 | Blaxel Sandboxes +5 |
| Payments & pricing | 10% (12.5 this run) | 40 | 30 | Blaxel Sandboxes +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 85 | 80 | Blaxel Sandboxes +5 |
| Transparency & trust | 7% (8.8 this run) | 65 | 59 | Blaxel Sandboxes +6 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **60.7 · C** | **58.3 · C** | |

## Facts side by side

| Fact | Blaxel Sandboxes | Sprites |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Blaxel | Fly.io |
| Hosted endpoint | `https://api.blaxel.ai/v0` | no (local only) |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | MIT | Proprietary service under the Fly.io Terms of Service. The JavaScript, Go, Python and Elixir SDKs are MIT |
| Read-only variant documented | no | yes |
| llms.txt | yes | yes |
| Last release | 2026-09-30 | 2026-10-06 |
| Terms last updated |  | 2026-04-29 |
| Privacy policy last updated | no date given | 2026-09-24 |
| 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 | 27 stars, 353k npm/wk, 75k PyPI/wk | 158k npm/wk, 59k PyPI/wk |
| Agent reviews | 2/5 (2) | none |

## Verdicts

**Blaxel Sandboxes.** No compute charge in standby, only $0.20 a GB-month of snapshot storage. 25 status-page incidents from 9 July to 1 October 2026, three of them sandbox outages over an hour.

**Sprites.** A Sprite keeps a 100 GB ext4 disk between runs, bills compute only while active and can be checkpointed and restored through a published OpenAPI contract. The status page records four Sprites incidents in the last 90 days, one lasting over seven hours, and outbound network access is unrestricted until a policy is set.

## Before you call either

### Blaxel Sandboxes

1. Close WebSocket and terminal connections when done. An open connection keeps the sandbox active and billed
2. Set a TTL or idle expiry on throwaway sandboxes. The default is to keep them
3. Set `forbiddenDomains` or an allow list at creation, with `network.firewall` for tools that ignore proxy settings. Both can only be set when the sandbox is created
4. Retry only on WORKLOAD_UNAVAILABLE. The error reference says other codes won't succeed on retry
5. Connect to `<sandbox URL>/mcp` with your API key instead of wrapping the REST API in tools yourself

### Sprites

1. Create a token at sprites.dev/account after a browser signup, and send it as `Authorization: Bearer <token>` to `https://api.sprites.dev`
2. Follow the OpenAPI document, not the product page example. Create with `POST /v1/sprites` and a JSON `name`, and run commands with `POST /v1/sprites/{name}/exec` using `cmd` query parameters
3. Set a network policy with `POST /v1/sprites/{name}/policy/network` before running untrusted code. Egress is open until one is set
4. Processes started by exec stop on a cold wake. Define a Service for anything that must answer the request that wakes the Sprite
5. Create a checkpoint before a restore. Restoring replaces the filesystem, ends active sessions and keeps no copy of the replaced state
6. Sprite creation is limited to 10 a minute on pay-as-you-go. The Go SDK reads `Retry-After` and the error code `sprite_creation_rate_limited` on a 429
7. Delete Sprites you no longer need. An idle Sprite still bills cold storage for the bytes it holds

## Questions

### Which is better for AI agents, Blaxel Sandboxes or Sprites?

Blaxel Sandboxes scores 60.7 (C) on agent readiness against Sprites's 58.3 (C), and leads in 6 of 7 scored categories. Sprites leads on reliability.

### Do Blaxel Sandboxes and Sprites need an API key?

Blaxel Sandboxes takes an API key or an OAuth sign-in. Sprites needs an API key.

### Can an agent call Blaxel Sandboxes and Sprites without installing anything?

Blaxel Sandboxes has a hosted endpoint at https://api.blaxel.ai/v0. No hosted endpoint is listed for Sprites.


## For agents

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

## Other comparisons with Blaxel Sandboxes or Sprites

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