
Perplexity
8.2#1 in ai research assistantsFrom $20 a monthFree planAndroidiOSWebAPI
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Perplexity suits people who want cited answers from web, file, and connected-app searches. Its higher-tier plans are designed for professionals, writers, strategists, researchers, and other power users.
Rabbit Hole may suit people doing academic literature reviews, social sentiment research, company due diligence, or technical research. It is for Mac users who want cited reports and can verify important findings against primary sources.