FreemiumListed
Glasp
Glasp
Social highlighting for web, PDFs, YouTube, and Kindle — unlimited free public highlights; Pro $12.50/month.
Research & Reference
Free Elicit alternatives
Other checked tools in the same category as Elicit — each with a genuine free tier, verified against the provider's own pages, and described with its honest limits.
Best for: weighing Elicit against free rivals before committing time or money to one.
VariesListed
PDF.ai
PDF.ai
Chat with PDFs plus a parse/extract/split API — plans exist; public pricing not shown at check time.
FreemiumListed
AskYourPDF
AskYourPDF
Chat with PDFs and documents — 50 free questions a day; Premium from $11.99/month.
Free trialListed
Readwise
Readwise
Resurfaces highlights from Kindle and 40+ sources, with an AI-powered read-it-later reader — 30-day trial, from $5.59/month.
FreemiumListed
WolframAlpha
Wolfram
Expert-level computed answers across math, science, and life — free basic access, Pro for steps and heavy use.
FreemiumListed
ChatDOC
ChatDOC
Chat with PDFs with cited sources — 100 questions free, no card, 10 uploads a day.
FreemiumListed
Consensus
Consensus
AI search over 400M peer-reviewed papers with a Consensus Meter showing scientific agreement — free tier confirmed at $0.
FreemiumListed
Humata
Humata
Chat with your PDFs — free plan covers 60 pages a month, no card required.
FreeListed
Semantic Scholar
Allen Institute for AI
A free, AI-powered research engine over 238 million scientific papers — semantic search, citation context, and an open API, run by the non-profit Allen Institute for AI.
FreeListed
LMArena
LMArena
Chat with frontier AI models side by side and vote on the better answer — free, no account needed, from the project behind the influential LMSYS leaderboards.
FreeListed
Kaggle
A free platform for data science and machine learning — public datasets, browser notebooks with free GPUs/TPUs, competitions, a model hub, and hands-on courses, at kaggle.com.
FreemiumListed
Google NotebookLM
Google's AI research and note-taking tool that answers from the sources you upload — documents, PDFs, slides, links — and cites them. Free at notebooklm.google with a Google account, it can even turn your sources into a spoken audio overview.
FreemiumListed
Perplexity
Perplexity AI
An answer engine that responds to questions in plain language and cites its sources — free to use at perplexity.ai, with a paid Pro plan for more powerful models and higher limits on its deeper research modes.
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