Perplexity Comet vs Chrome DevTools MCP
Detailed side-by-side comparison to help you choose the right tool
Perplexity Comet
🟢No Codebrowser-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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$0Chrome DevTools MCP
🔴Developerbrowser-automation
Official open-source MCP server from the Chrome DevTools team that lets AI coding agents control and inspect a live Chrome browser for automation, debugging, and performance analysis.
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FreeFeature Comparison
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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
Chrome DevTools MCP - Pros & Cons
Pros
- ✓Google-official, so protocol and DevTools features stay in sync
- ✓Actual Lighthouse audits and performance traces, not just DOM automation
- ✓One-line `npx` install works with every major MCP client
- ✓Puppeteer auto-waits eliminate flaky sleep-based scripts
- ✓Free and open source under a permissive license
Cons
- ✗Chrome-only — no Firefox or WebKit support
- ✗Performance traces produce very large payloads that eat agent context
- ✗Headless-server setups need extra config for headful debugging
- ✗Not ideal when you need to control real user profiles or extensions at scale
- ✗Verbose tool surface (~50 tools) can slow small models with poor tool selection
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