Sanbox vs Page Agent
Detailed side-by-side comparison to help you choose the right tool
Sanbox
🔴Developeragent-infrastructure
Sanbox by Sanlabs runs AI agents in isolated, resumable MicroVM sandboxes with persistent filesystems, live run events, network ACLs, and self-hosting options.
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CustomPage Agent
🟡Low Codeagent-infrastructure
Alibaba's open-source, in-page JavaScript framework that gives any web page its own natural-language GUI agent with one script.
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CustomFeature Comparison
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Sanbox - Pros & Cons
Pros
- ✓Kernel-level MicroVM isolation is a real boundary, not shared-kernel containerization
- ✓Snapshots make agent runs pausable and resumable from the exact state — inspectable mid-run
- ✓EU data residency, on-prem, and VPC deployment options cover compliance-sensitive teams
- ✓Live structured event stream removes the need to poll for run status
- ✓Reusable run templates pin the approved image, model, limits, and egress policy in one place
Cons
- ✗Pricing is not published — access requires a signup and likely sales conversation
- ✗No MCP support currently — integration is CLI, template, and run-based only
- ✗Newer entrant; smaller ecosystem than E2B, Modal, or Daytona in adapters and community examples
- ✗Documentation on runner adapter contracts is thin outside the OpenCode reference
- ✗CLI-first workflow may feel heavier than one-line SDK calls for quick prototyping
Page Agent - Pros & Cons
Pros
- ✓Text-DOM approach works with cheap text-only LLMs and local models — no vision-model bill
- ✓One-line integration is genuinely one line; embeds without a backend rewrite
- ✓MCP Server (Beta) is unusual for in-page agents and opens up external orchestration
Cons
- ✗Text-DOM only — can't reason about visually-rendered content that isn't in the DOM (canvas apps, some SPAs)
- ✗Not intended for server-side scraping or headless automation — use Playwright/Puppeteer for that
- ✗MCP Server is still Beta as of mid-2026, so expect API changes
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