Perplexity How-To Guide 2026: Cited AI Search, Deep Research and the Comet Browser

The poster child for replacing search with AI is Perplexity. Ask a question and it answers with citations, so instead of opening ten links you get the answer and click the sources to verify. The now-free Comet browser lowers the barrier further. Here’s what it does and how to use it well. (This isn’t about Claude - it’s a search tool.)

What does it unlock?

• Cited answers — source links under the answer to fact-check
• Deep Research — reads dozens of sources and returns a longer report
• Page summaries, voice mode, shopping assistant
• Comet AI browser — the answer engine lives in the address bar (search + answer without switching tabs)

The shift is from “search then dig through links” to “ask then check sources.” For a broader starter kit, see the complete free AI tool stack.

Why it’s useful

Plain chatbots can confidently make things up (hallucinate); Perplexity pairs live search with citations, so you can see where a claim came from. That makes it trustworthy for research and fact-checking - as long as you build the habit of clicking the sources.

When to use it

Good fit	Weaker fit
Research, fact-checking, latest info	Creative writing / brainstorming
Comparisons needing evidence	Long coding (use a dedicated tool)
Turning many sources into a report	Offline work

How to use it — access and workflow

• Access: the web at perplexity.ai, mobile apps (iOS/Android), or the Comet browser (free since March 18, 2026 on Windows/Mac/mobile). A free account gets you going.
• Use: ask in plain language -> click the sources under the answer -> toggle Deep Research when you need depth.
• With Comet, you ask right from the address bar, cutting tab-switching.

Pairing tools into a workflow connects to automation like Notion MCP and Playwright MCP.

Pricing and limits

• Free: about 5 Pro searches/day (base models, citations)
• Pro $20/mo: unlimited Pro Search + 20 Deep Research/day
• Max $200/mo, Education $10, Enterprise separate. Comet Plus $5/mo (premium publisher content; included for Pro/Max)

The limit is clear: it’s not a full Google replacement - general browsing and shopping still favor Google, while Perplexity shines as a fast, sourced research layer. And always click the citations to verify.

Frequently Asked Questions

Q. Does it fully replace Google? No. It’s strongest when you need sourced answers (research, fact-checking); general browsing and shopping still favor Google. Using both is the realistic approach.

Q. How far does the free tier go? Free gives ~5 Pro searches/day with base models and citations, and the Comet browser has been free since March 2026. Unlimited Pro Search and Deep Research (20/day) start at Pro ($20/mo).

Q. When should I use Deep Research? Use plain search for quick answers, and Deep Research only when you need a report synthesized from many sources (limited on Free).

Q. Can I trust the answers as-is? No. Citations are provided, but final verification is on you - click one or two sources for anything important.