Liner
AI research assistant with academic deep research
Liner is an AI search and research assistant that delivers cited answers and a Deep Research mode producing organized report-style results. It includes a web highlighter and searches an academic database of 200+ million papers, making it useful for literature reviews.
Key features
- Deep Research reports
- Cited AI search answers
- Web page highlighter and collections
- 200M+ academic paper database
- AI agents for literature review
Pros
- Strong academic coverage
- Free daily research uses
- Built-in highlighter
Cons
- Free tier has daily query limits
- Less general-purpose than Perplexity
Alternatives to Liner
Perplexity
AI answer engine that cites its sources for every claim.
Elicit
AI research assistant for finding and summarizing papers.
Consensus
AI search engine for scientific research papers.
SciSpace
AI copilot for reading and understanding research papers.
Compare Liner
Liner FAQ
Is Liner free?
Liner has a free tier you can start with; paid plans start from Free.
How much does Liner cost?
Liner pricing starts from Free. Check the official site for current plans.
What are the best alternatives to Liner?
Top alternatives to Liner include Perplexity, Elicit, Consensus, SciSpace.
What is Liner best for?
Liner is best for Academic literature reviews, Cited research summaries, Saving and organizing sources.
Reviewed by the ToolGlance editorial team · Last updated 2026-05-30