Comparison·Updated March 2026
fazm.

Fazm vs Perplexity Comet

A voice-first AI agent for your entire desktop vs an AI-powered web browser. Comet makes your browser smarter - Fazm makes your entire computer smarter.

Key difference

Desktop Agent vs Browser Tool. Worlds apart.

Comet is an AI browser - it can only see and control web pages inside its own window. Fazm is a desktop agent - it sees and controls everything on your Mac, including native apps Comet will never reach.

fazm.

Fazm

Desktop Agent - controls your entire Mac

Works across all your apps
  • VS Code

    Refactors code, runs terminal commands, navigates files

  • Slack + Email

    Reads messages, drafts replies, sends across apps

  • Figma + Browser

    Inspects designs, cross-references with docs

Your whole desktop. One agent.

No browser lock-in. No app switching limitations. Fazm sees and controls everything.

Perplexity Comet

AI Browser - web pages only

Confined to browser tabs
  • Web pages

    Summarizes, searches, and answers questions about tabs

  • Comet Agent

    Clicks buttons, fills forms, navigates websites

  • Native apps?

    Cannot see VS Code, Slack, Figma, Terminal, or any desktop app

Smart browser. Blind desktop.

Comet makes web browsing better, but your IDE, email client, and design tools are invisible to it.

Comet makes your browser smarter. Fazm makes your entire computer smarter.

If your work lives entirely in a browser, Comet is useful. But most real work spans native apps, files, and tools that no browser can reach - and that's where Fazm lives.

Feature-by-feature comparison

How Fazm and Perplexity Comet stack up across every dimension.

Fazm
Perplexity Comet
Works across all apps
Any macOS app
Browser tabs only
Voice-first interaction
Native push-to-talk
Limited voice mode
Screen context memory
Continuous screen history
Current tabs only
Web browsing AI
Via any browser
Built-in Perplexity search
Browser automation
Not a focus
Comet Agent clicks & fills forms
Works with any browser
Yes - Chrome, Safari, Arc, etc.
No - must use Comet browser
Native app understanding
VS Code, Figma, Slack, Terminal
None - browser only
Open source
Yes
No
Local processing
Screen analysis runs locally
Data sent to Perplexity servers
Cross-platform
macOS (Windows planned)
macOS, Windows, Android, iOS
Free tier
Free & open source
Free with limited searches
No browser switch required
Yes - works alongside any browser
No - you must switch to Comet
Scope

Your entire desktop, not just browser tabs

Comet only sees what's inside its own Chromium browser window. Fazm operates across every app on your Mac - switch between VS Code, Figma, Slack, Terminal, and Finder without leaving your workflow.

F
Fazm
  • Controls any macOS app
  • Switches between applications
  • Manages files and folders
  • Types and clicks anywhere on desktop
Comet
  • Limited to web pages in Comet
  • Cannot access native apps
  • No file system access
  • Only automates websites
Input

Speak naturally. Fazm acts instantly.

Fazm is built around voice - push-to-talk with one keyboard shortcut. Comet has limited voice capabilities; its primary interface is the Comet Assistant sidebar where you type queries.

F
Fazm
  • Push-to-talk voice input
  • Natural language commands
  • One keyboard shortcut to activate
  • Voice drives full desktop control
Comet
  • Text-first sidebar chat
  • Limited voice mode
  • Voice cannot trigger agent actions
  • Primarily keyboard-driven
Context

Sees your whole screen. Knows your history.

Fazm understands what's on your screen across all apps and builds persistent context over time. Comet's context is limited to whatever tabs are currently open in its browser - close a tab and the context is gone.

F
Fazm
  • Full screen awareness across apps
  • Continuous context memory
  • Local file indexing
  • Cross-app understanding
Comet
  • Current browser tabs only
  • No persistent memory
  • No file access
  • No cross-app awareness
Privacy

Your data stays on your machine.

Fazm processes screen data locally before sending only the intent to AI models, and the entire codebase is open source. Comet sends your browsing data, queries, and page content to Perplexity's servers for processing.

F
Fazm
  • Local screen processing
  • Only intent sent to AI
  • Open source & auditable
  • No data collection
Comet
  • Browsing data sent to Perplexity
  • Proprietary processing pipeline
  • Closed source
  • Perplexity data policies apply

About each product

Perplexity Comet

by Perplexity

A Chromium-based AI browser launched in July 2025. Features two AI modes: “Comet Assistant” (a sidecar panel for Q&A and summaries of open tabs) and “Comet Agent” (takes over the browser cursor for multi-step web tasks like booking flights, shopping, and filling forms). Includes built-in Perplexity search. Free with limited searches; Pro at $20/month and Max at $200/month for unlimited usage. Available on macOS, Windows, Android, and iOS.

fazm.

Fazm

Open source

An AI computer agent for macOS that goes beyond the browser. Controls your mouse, keyboard, browser DOM, and native apps - all triggered by voice. Indexes local files, builds a knowledge graph, and integrates with Google Workspace. Screen analysis runs locally for privacy. The entire project is open source.

When to use which

Choose Fazm if you...

  • Work across multiple desktop apps, not just a browser
  • Want voice-first control over your entire computer
  • Need your AI to understand local files and native apps
  • Don't want to abandon your current browser
  • Prefer open source software you can inspect and audit
  • Want screen analysis that runs locally for privacy

Choose Comet if you...

  • Primarily work inside a web browser all day
  • Want AI to automate web tasks like booking and shopping
  • Need built-in search with AI-powered answers
  • Want cross-platform support (Windows, Android, iOS)
  • Don't mind switching to a new browser

Ready to go beyond the browser?

Download Fazm for macOS and see what a desktop-wide AI agent can do. No browser switch required. Free and open source.