Research Freemium

Liner

Find cited answers, analyze papers, and write research from verified sources

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PricingFreemium
Free planYes
Free trialYes
APIYes
Open sourceNo
DeploymentCloud
Last verifiedAugust 1, 2026
Overview

Tool overview

Liner is listed under Research AI tools.

Summary

What is Liner?

Liner is an AI search and research workspace for students, researchers, and professionals. It provides cited answers, deep-research reports, paper discovery, source collections, file analysis, writing tools, visual summaries, and access across web, desktop, mobile, and browser extensions.

Best fit

Best for

Students and researchers who need fast source-backed search and writing

Audience

Who is it for?

StudentsAcademic researchersKnowledge workersWriters and analysts
Recommendation

Decision note

Confirm current Pro pricing, free quotas, model limits, Deep Research allowance, file limits, API pricing, supported languages, retention, export formats, and institutional terms.

Capabilities

Key features

AI search with inline verifiable citations

Deep Research reports and research agents

Scholar search across hundreds of millions of papers

File and PDF analysis

Writing and editing workspace

Web, desktop, mobile, and browser-extension access

Workflows

Use cases

Finding academic papers

Creating literature reviews

Analyzing uploaded documents

Drafting cited research reports

Strengths

Pros

  • Free access is available
  • Large academic source index
  • Apps and extensions support cross-device work
Considerations

Cons

  • Published plan prices were not reliably exposed in search results
  • AI citations can still be irrelevant or incomplete
  • Sensitive uploads require privacy review
Considerations

Limitations

Liner can return incomplete, outdated, or misleading evidence even when citations are present. Users must open primary sources, verify quotations and context, review generated writing, protect uploaded files, and follow academic integrity rules.

Cost

Pricing details

Pricing modelFreemium
Free planYes
Free trialYes
Pricing context

Billing options

Free planMonthly subscriptionAnnual subscription
Pricing context

Pricing note

Liner provides free access and promotes paid Pro and API offerings, but a stable public starting amount was not confirmed from the reviewed current official pages. The starting-price cell is therefore explicitly cleared rather than guessed.

View official pricing
Compatibility

Supported languages

  • Multiple languages
Connectivity

Integrations

Chrome

Edge

Google Drive

PDF files

Specs

Technical details

PlatformsWeb, Desktop, iOS, Android
Multilingual supportYes
Login requiredYes
Open sourceNo
DeploymentCloud
CompanyLiner
Launch year2015
Models / versionsLiner AI Search Liner Deep Research Liner Scholar
Editions / plansFree, Basic, Professional, Organization, and Custom plans
Data confidenceHigh
Last verifiedAugust 1, 2026
Documentation → Data source →
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Answers

Frequently asked questions

Liner is an AI search and research workspace for students, researchers, and professionals. It provides cited answers, deep-research reports, paper discovery, source collections, file analysis, writing tools, visual summaries, and access across web, desktop, mobile, and browser extensions.
Students and researchers who need fast source-backed search and writing
The listed pricing model for Liner is Freemium. Pricing can change, so users should verify the latest plan details on the official website.
Yes. The current profile indicates that a free trial is available.
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