Liner Review: Features, Pricing & Alternatives

What is Liner?

Liner is an AI research platform that answers questions with clickable citations, helping students, academics and professionals find and check sources quickly. It now comes as three connected products: Liner for cited search, Liner Scholar for academic literature work, and Liner Write for drafting and editing alongside your research. A single paid plan covers all three.

Liner is made by LINER, Inc. It began in the mid-2010s as a web highlighter extension that let people mark up and save passages from web pages, and it has since rebuilt itself around AI search and research agents. The company says more than 10 million people use Liner. In 2025 and 2026 it has added specialised agents, a Max plan, Team and Enterprise plans, and developer access through an API and MCP.

Liner’s angle is research reliability. Answers come with ranked, linked sources, and citations can be exported in APA, MLA, Chicago or BibTeX. Liner says its Advanced Search outperforms competing AI tools on SimpleQA, an OpenAI factual-accuracy benchmark, a company claim worth testing yourself. Agents such as the Hypothesis Generator, Citation Recommender and Literature Review tool target academic workflows that general chatbots handle less directly.

Key features of Liner

• Cited AI searchAnswers include clickable citations ranked by relevance, plus follow-up questions and mind maps for complex topics.
• Liner ScholarA research agent that finds academic papers, compares sources and helps draft literature reviews.
• Research agentsSpecialised tools including a Hypothesis Generator, Citation Recommender, Literature Review and Survey Generator.
• Deep Research reportsTurn a broad question into a structured, sourced report rather than a single short answer.
• Liner WriteSearch, write and edit in one window, with sources verified as you draft emails, reports or papers.
• File uploads and highlightingAsk questions about PDFs and documents, and use the browser extension to highlight and save web passages.

Who is Liner best for?

• Students who need quick, cited answers and correctly formatted references for essays and assignments.
• Graduate researchers because Scholar and the literature review agents speed up early-stage reading and source discovery.
• Content and market researchers who want sourced answers they can verify before using them in reports.
• Small research teams since the Team plan adds admin controls and excludes team data from AI training.

Popular ways to use Liner

• Literature discovery: use Liner Scholar to find and compare papers on a new research topic.
• Citation building: export sources from an answer in APA, MLA, Chicago or BibTeX format.
• Hypothesis brainstorming: generate candidate research hypotheses grounded in existing studies.
• Document questions: upload a PDF and ask targeted questions about its methods or findings.
• Sourced drafting: write a report in Liner Write while checking claims against linked sources.

Liner pricing (October 2026)

Annual billing saves about 20% on Pro and Max. Liner states that it does not offer refunds, though you can cancel at any time, so test the free plan first.

Liner pros and cons

How to get started with Liner

1. Sign up at liner.com with an email or Google account.
2. Ask a research question and open the cited sources to check them.
3. Switch to Liner Scholar for paper-focused searches.
4. Install the browser extension to highlight and save passages as you read.
5. Upgrade to Pro only once you know you need more uploads or no ads.

Tips to get better results from Liner

• Always open and read the cited source before quoting a claim in your work.
• Use the Citation Recommender while drafting to find support for specific sentences.
• Choose annual billing only after a month of steady use, since refunds are not offered.
• Ask for a mind map when exploring an unfamiliar topic to see its structure.

Liner vs alternatives

Liner competes most directly with Perplexity for cited web answers and with Consensus, Elicit and SciSpace for academic research. Perplexity is broader and faster for general questions, while Consensus and Elicit focus tightly on peer-reviewed papers and evidence extraction.

Liner sits between those camps, combining general cited search with academic agents and a writing space. If your work is mostly systematic reviews, Elicit is more specialised; if you mostly need writing polish, Paperpal is a better fit. See all best AI research tools.

Our verdict: is Liner worth it?

Liner FAQs

Pricing and features change often. Details on this page were last reviewed in October 2026. Always confirm current plans on the official Liner website.