Perplexity AI
Also known as: Perplexity, Perplexity Pro, Answer Engine
Perplexity AI is an AI search engine — not a pure chat application. The tool searches the web live, summarizes the results, and backs every answer with source citations. Perplexity combines its own models (Sonar) with frontier models from OpenAI, Anthropic, and Google.
Difference to ChatGPT
ChatGPT answers primarily from model knowledge; Perplexity researches the web live for every query. Answers include clickable sources — this makes statements verifiable and reduces the risk of outdated information.
Use cases
Its strengths lie in research and competitive intelligence: market overviews, competitor monitoring, fact checks, and deep-research tasks that require sources.
Limitations
Quality depends on the sources found. For long-form writing, file workflows, or agent tasks, assistants like ChatGPT or Claude are better suited.
Pricing
The basic version is free. Perplexity Pro costs 20 US dollars/month; Enterprise Pro starts at 40 US dollars per user/month — including search across internal company files.
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Stand: Juni 2026