Tools / Research

ChatPDF

Chat with any PDF.

Free tierFree tier; Plus plan availableResearch

Good for

AI answer engine with cited sources.

Free tierFree tier, paid from ~$20/moResearch

AI research assistant for academic papers.

Free tierFree Basic plan; Plus from $11/user/mo billed annuallyResearch

Search engine answering from scientific papers.

Free tierFree tier, paid plans availableResearch

Chat with your sources and generate audio overviews.

Free tierFree, with higher limits in Google plansResearch

Shows how papers cite each other with context.

PaidPaid from $12/mo billed yearly; 7-day free trialResearch

Ask questions across long documents.

Free tierFree (60 pages/mo); Expert from $9.99/moResearch