Perplexity AI is an answer engine that replies with synthesized text and a clickable citation for every claim, plus a Chromium-based browser called Comet. It is for researchers, analysts, and students who want sourced answers instead of a wall of blue links.
Core Features
- Pro Search runs multi-step queries and shows its reasoning and sources inline.
- Deep Research produces long, citation-dense reports for complex topics.
- The Comet browser, free since March 18 2026, puts the answer engine in the address bar and adds a side panel that reads the current page, summarizes it, and fills forms.
- Spaces and Pages turn a search thread into a saved, shareable project.
- Multi-model access in one subscription spans GPT-4o, Claude, and Gemini, plus a Sonar API for developers.
Best For
- Researchers and journalists who need verifiable sources on every fact.
- Knowledge workers comparing products or markets across many tabs.
- Students doing cited, fact-checked coursework.
Pricing
The free tier includes unlimited Quick Search with about 5 Pro Searches per day. Pro is $20 per month, or $200 per year, with unlimited Pro Search, Deep Research, file uploads, and the Comet browser. Max is $200 per month with autonomous Background Assistants, Perplexity Labs, and the Model Council. Enterprise plans add SSO and data residency. The Sonar API starts at $1 per 1M tokens.
Our Take
Perplexity is the best default for sourced search in 2026, clearly ahead of a plain ChatGPT tab for research. The trade-off is that its coding and long-form writing lag behind Cursor and Claude, so pair it with those for build work. Browse the full set in our aifreetool.site/tool-category/ai-search-tool/ directory.
