Perplexity Comet vs Page Agent

Detailed side-by-side comparison to help you choose the right tool

Perplexity Comet

🟢No Code

browser-automation

Perplexity's agentic web browser with a built-in AI assistant that reasons over your open tabs, executes multi-step tasks, and cites its sources.

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Starting Price

$0
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Page Agent

🟡Low Code

browser-automation

Alibaba's open-source in-page GUI agent: one JavaScript snippet gives any web page its own AI agent that controls the UI via natural language. Includes a beta MCP server so external agent clients can drive the browser.

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Starting Price

Free
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Feature Comparison

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FeaturePerplexity CometPage Agent
Categorybrowser-automationbrowser-automation
Pricing Plans4 listed plans1 listed plan
Starting Price$0Free
Key Features
  • • Chromium-based AI browser (macOS, Windows, iOS, Android)
  • • Sidebar assistant with real-time page-aware answers
  • • Cross-tab research threads with source citations
  • • In-page JavaScript agent
  • • Text-DOM operation without screenshots
  • • Bring-your-own LLM

Perplexity Comet - Pros & Cons

Pros

  • ✓Uses current pages without copy and paste
  • ✓Citations aid inspection
  • ✓Chromium reduces switching friction
  • ✓Agent actions remove repetitive navigation

Cons

  • ✗Browser access creates privacy risk
  • ✗Vendor pages were Cloudflare-blocked
  • ✗Agents can submit unintended data
  • ✗High autonomy may require an expensive plan

Page Agent - Pros & Cons

Pros

  • ✓One script tag adds an AI agent to any web page — no extension or headless browser. This directly supports the primary workflow.
  • ✓Text-based DOM understanding: works without screenshots or multimodal LLMs.
  • ✓Bring your own LLM: mainstream APIs or locally deployed models.
  • ✓MCP server (beta) lets external MCP clients control the browser.

Cons

  • ✗Plan prices can omit usage overages, model-provider charges, implementation work, taxes, or required seats.
  • ✗Features and limits can change by plan, billing interval, region, and release; verify current documentation.
  • ✗MCP connectivity expands the permission surface and requires narrow scopes, approvals, logs, and credential rotation.
  • ✗A representative pilot is necessary because a feature list does not establish reliability or operational fit.

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Review Perplexity CometReview Page Agent