Liner
by Liner · getliner.com ↗
AI search and research assistant that answers questions with cited sources and lets users highlight and organize findings.
ai-search research highlighting
- Category
- Answer Engines
- Business model
- Freemium
- Availability
- Global
- Launched
- 2015
- Record updated
- 2026-07-30
- Founded
- 2015
- Headquarters
- KR
- Canonical URL
- https://globalaiproductindex.com/products/liner/
Overview
Liner is an AI search and research assistant that answers questions with cited sources and lets users highlight and organize findings from web pages and PDFs. Originally a highlighting tool, it now centers on reliable, citation-first answers aimed at students and researchers. Liner offers a free tier and Pro subscriptions for unlimited usage and advanced models.
Key features
- AI answers with line-level source citations
- Web and PDF highlighting with saved collections
- Deep research mode for scholarly questions
- Browser extension and mobile apps
Use cases
- Academic research with verifiable citations
- Collecting and organizing highlights across sources
- Fact-checked everyday search
Pricing
Liner has a free plan with daily limits; Pro subscriptions unlock unlimited queries, advanced models, and deep research features.
Frequently asked questions
What is Liner?
Liner is an AI research assistant that provides cited answers and tools to highlight and organize sources.
Who uses Liner?
Liner is popular with students, academics, and professionals who need trustworthy, citable answers.
Is Liner free?
A free tier covers basic use; Pro plans remove limits and add advanced research modes.
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- Consensus — AI answer engine that finds and summarizes findings from peer-reviewed scientific research papers.
- Elicit — AI research assistant that finds, screens, and summarizes academic papers to help answer research questions.
- Exa — Neural web search API built for AI applications, returning meaning-based results and page content.
- Felo — Multilingual AI search engine that generates sourced answers and mind-map style summaries.
Sources
This record was last reviewed on 2026-07-30.
Machine-readable record: /api/products/liner.json · Spot an error? Suggest a correction