kitio.aiAdded Oct 28, 2026
Liner
Freemium · $17.99/moAI research search with line-level citations and a web highlighter
What is Liner?
Liner is an AI search and research tool that answers questions with citations linked to specific sentences in sources. It grew out of a popular web highlighter and is used by students and researchers for academic work.
Scholar mode searches academic papers, and research agents can draft literature reviews, hypotheses or survey designs. The browser extension still lets you highlight pages and ask AI about what you're reading, and Liner offers a search API.
Features
- Cited answers
- Scholar search
- Research agents
- Web highlighter
- Search API
Tags
Releases
+ Submit new release- Listed
Liner was added to the directory.
Organization
Liner
🇰🇷 South Korea
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Freemium
- Paid options from
- $17.99/mo
- Billing frequency
- Monthly
Liner plans
Free
Free
- Unlimited Advanced Search
- 1 file upload per day
- Answers with ads
Pro
$17.99/mo
- 300+ AI models
- All Liner products
- Ad-free search
Max
$35.99/mo
- Everything in Pro
- Higher usage limits
Team
$26.99/mo
- Per seat, 2-20 members
- Everything in Max
- Admin controls and central billing
- Team data excluded from training
Enterprise
Contact sales
- Dedicated manager
- Audit logs
- Volume discounts
Prices in USD, checked Oct 28, 2026. Plans change often, so confirm on the Liner site.Official pricing
Sponsored
Your AI tool here
A Featured launch puts your tool in this spot and on the home page for a week.
Top Liner alternatives
View allResearch & search
AI search engine that answers questions from peer-reviewed studies
Research & search
AI answer engine that searches the web and cites its sources
Research & search
Conversational AI search mode inside Google Search
If you liked Liner
Free AI-powered search engine for scientific literature
FreeResearch & search2 clicks to the websiteMade in United StatesSee how papers are cited and get AI answers backed by citations
Free trial · $20/moResearch & searchMade in United StatesAI workspace for finding, reading and reviewing research papers
Freemium · $20/moResearch & searchLinked research database with AI summaries and research assistant
FreemiumResearch & searchMade in United KingdomAI research assistant for literature reviews and data extraction
FreemiumResearch & searchMade in United States
Pros and cons
Pros
- Sentence-level citations
- Good academic focus
- Handy browser extension
Cons
- Free plan limits uploads
- Many overlapping features
Prompts & results
No prompts yet. Add your own prompt and output to help others use this tool.
Share a prompt
Reviews
Q&A
What is Liner?
Liner is an AI search and research tool that answers questions with citations linked to specific sentences in sources. It grew out of a popular web highlighter and is used by students and researchers for academic work.
How much does Liner cost?
Liner is freemium, with paid plans from $17.99/mo.
Is there a free version of Liner?
Yes. Liner has a free plan, and paid plans add more usage and features.
What are the main features of Liner?
Cited answers, Scholar search, Research agents, Web highlighter, Search API.
Who makes Liner?
Liner is made by Liner.
What are the best alternatives to Liner?
Popular alternatives include Consensus, Metaso, Perplexity.