Liner
Liner: A broad research assistant with citations, Deep Research, file analysis, and multiple access points. Ranked #19 of 28 in AI Research Assistants by our editors (7.4/10); pricing: Free plan; best for researchers wanting broad platform coverage.
At a glance
- Editor score7.4 / 10
- PricingFree plan
- Best forResearchers wanting broad platform coverage
- Free planYes
- Paid from$14.99/user/mo
- Source citationsYes
- Founded2015 · Seoul, Republic of Korea
- Facts checked21 Sep 2026
Where it wins
- Combines web and academic search with source-backed answers
- Provides Deep Research reports and line-by-line citations
- Available across web, desktop, mobile, extension, API, and MCP
Where it doesn't
- Free file analysis allows one upload per day
- Free uploads have a 25MB maximum file size
- Advanced team controls require Team or Enterprise
Our verdict on Liner
Liner is an AI search and research platform for academics, professionals, and teams. It combines web and academic search with source-backed answers, line-by-line citations, multi-step Deep Research reports, document uploads, research agents, and browser assistance. Liner Scholar, Liner Write, APIs, and an MCP interface extend the product beyond a single search experience. Access spans web, Windows, macOS, iOS, Android, Chrome, API, and MCP workflows, making it suitable for researchers who move between platforms or need research support inside existing tools.
The free plan includes Unlimited Advanced Search, Deep Research access, line-by-line citations, one file upload per day, and a 25MB maximum file size. Pro costs $17.99 per user per month when billed monthly or $14.99 per user per month when billed annually, adding major AI models and ad-free search while retaining the core research features. Max costs $35.99 monthly or $29.99 annually per user and lists the same highlighted features. Team costs $26.99 per seat per month, with a displayed team size of 2-20 members, and adds centralized account management and billing, a dedicated workspace, admin controls, collaboration features, and exclusion of team data from AI training. Enterprise adds a dedicated manager, onboarding sessions, audit logs, and custom terms.
Its strongest distinction is breadth: Liner connects citations, academic sources, web pages, uploaded files, research agents, browser summaries, APIs, and MCP integrations in one product family. That makes it a good fit for researchers who need source-aware work across several environments, while the free plan provides a meaningful way to access core capabilities. Individual users with heavier document workflows may outgrow the free upload allowance, and users seeking team administration need a paid team tier. Liner is less compelling for people who do not need web, academic, document, or browser-based research, or who prefer a narrowly focused tool rather than a platform spanning search, analysis, and integrations.
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Liner pricing
All 5 Liner plans and prices →
Liner fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $14.99/user/mo |
| Source citations | Yes |
| Deep research mode | Yes |
| Source access | Web+files |
| File uploads | Yes |
| Source limit | 5 sources |
| Team workspace | Yes |
| Money-back guarantee | 14 days |
| Deployment | Cloud, Desktop, Mobile, Browser extension |
| Platforms | Web, Windows, macOS, iOS, Android, Chrome extension |
| Compliance & security | SOC 2, ISO 27001, HIPAA |
| Support | Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 1,000+ integrations: MCP, Actions API |
| Pricing | Free plan (source) |
| Website | liner.com |
| Facts checked | 21 Sep 2026 |
Liner integrations
Liner lists 1,000+ integrations on its own site — the 2 named here are the ones its pages call out.
- MCP
- Actions API
Alternatives to Liner
- ElicitA focused research assistant for literature reviews, evidence synthesis, and clinical-trial analysis.9.4
- ConsensusA broad scholarly search workspace with deep analysis, citations, and research integrations.9.2
- ScholarlyA cited research workspace for web, file, and team-based investigation.9.0
Also Ranked In
Liner is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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