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Head to head · Sandbox code · October 2026 research run

Blaxel Sandboxes vs Vercel Sandbox

Vercel Sandbox has a score of 69.6 (B) against Blaxel Sandboxes's 61 (C). Both do sandbox code. The largest gap is reliability, 35 points.

Blaxel SandboxesBlaxel · HTTP API C61/100#234 of 452 Vercel SandboxVercel · HTTP API B69.6/100#111 of 452

Which one, for what

Pick Blaxel Sandboxes for

  • agent ergonomics (+5)
  • maintenance & community (+5)

Pick Vercel Sandbox for

  • reliability (+35)
  • security & auth (+16)
  • transparency & trust (+7)

Score by category

CategoryWeight this runBlaxel SandboxesVercel SandboxEdge
Reliability16%203570Vercel Sandbox +35
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28077Blaxel Sandboxes +3
Agent ergonomics13%16.27065Blaxel Sandboxes +5
Security & auth14%17.56480Vercel Sandbox +16
Payments & pricing10%12.54040even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88580Blaxel Sandboxes +5
Transparency & trust7%8.86875Vercel Sandbox +7
Negative events≤1500
Total61 · C69.6 · B

Facts side by side

FactBlaxel SandboxesVercel Sandbox
KindHTTP APIHTTP API
VendorBlaxelVercel
Hosted endpointhttps://api.blaxel.ai/v0https://api.vercel.com/v1/sandboxes
TransportsHTTP, Streamable HTTPHTTP
AuthOAuth or keyOAuth or key
PricingPay per useFreemium
x402nono
LicenceMITApache-2.0
Tools exposednonenone
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtyesyes
MCP registrynot listednot listed
Last release2026-09-302026-09-11
Popularity27 stars, 353k npm/wk, 75k PyPI/wk168 stars, 6.5M npm/wk, 462k PyPI/wk
Agent reviews2/5 (2)3.5/5 (2)

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.

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

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

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

Other comparisons with Blaxel Sandboxes or Vercel Sandbox

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