Liner

Liner suits professionals and researchers who want cited search, paper analysis, and document drafting in one workflow. Its breadth is appealing, but the upload allowances, agent-credit quotas, and annual billing make plan choice important.

Overview

Liner combines AI search with academic research and writing tools. Search answers cite sources users can check, and questions can be limited to a chosen source collection. That makes it a better fit for work where tracing claims matters than for people who only want quick, unsourced answers.

Liner Scholar supports paper discovery, citation following, comparison across papers, literature reviews, and research hypotheses. Liner Write can draft from a topic, add citations, edit text with AI, and export as PDF or DOCX. Together, these features connect research with document production, though readers who need only one of those jobs may find the broader package unnecessary.

Key features

Search and research

Cited answers offer a practical way to check supporting material instead of taking a summary on trust. Scholar’s comparison and literature-review functions suit readers synthesizing academic work. Liner can search across web and file sources, but the five-source limit makes it less suited to a question that needs a larger collection considered at once.

Writing, uploads, and models

Write covers drafting, citation addition, AI editing, and export, which can reduce the handoff between research and a finished document. Pro and Max include access to ChatGPT, Gemini, and Claude models, while the Free plan has no agent credits and answers include ads. Upload capacity also scales sharply by tier: Free permits one file a day up to 25MB, Pro allows 20 daily uploads up to 100MB each, and Max allows unlimited daily uploads up to 200MB each.

Privacy and security

Liner says users can request deletion of their account and activity, and that it checks for sensitive personal data and securely deletes it. Its stated credentials include SOC 2 Type I and II, HIPAA, and ISO 27001:2022. Teams also get a dedicated workspace with admin controls and an assurance that team data is excluded from AI training.

Pricing

Liner has a free tier and paid plans. Pro is $14.99/user/mo billed annually, with a monthly price shown as $17.99. It includes 1,000 agent credits, unlimited Advanced Search, Image Generation and Deep Research access, 20 daily uploads up to 100MB per file, the three named model families, and ad-free search. It suits an individual who wants those models and a substantial but finite upload allowance; the annual billing term is the trade-off.

Max is $29.99/user/mo billed annually, with a monthly price shown as $35.99. Its 2,500 agent credits and unlimited daily uploads up to 200MB per file make it the stronger individual option for heavier file-based work. It otherwise includes unlimited Advanced Search, Image Generation and Deep Research access, the named models, and ad-free search.

Team costs $26.99/month per seat for 2–20 members and includes everything in Max, centralized management and billing, a dedicated workspace with admin controls, exclusion of team data from AI training, and early access to collaboration features. It is the relevant choice for groups that need shared administration and privacy controls, but its per-seat price adds up as membership grows. Enterprise has custom pricing and includes everything in Team, a dedicated manager, onboarding sessions, audit logs, and higher discount rates.

Free costs $0.00 per free and includes unlimited Advanced Search, Image Generation and Deep Research access, one daily upload up to 25MB, and answers with ads, but no agent credits. It is useful for trying core search and research workflows, but the low upload ceiling and ads make it a constrained option for regular document-heavy work.

Platforms

Liner is available on Android, iOS, macOS, Windows, and the web, as well as through an API and browser extension. Its breadth makes it accessible across desktop and mobile workflows.

Who it's for

Liner Write identifies sales personnel, marketers, small business owners, and consultants as intended users. Its research features also suit people working across academic papers, while source-pool search helps users who need answers grounded in a defined collection. It is less compelling for readers who want a simple chatbot or whose research routinely exceeds five sources at a time.

Pros and cons

• Pros: Cited search and source-pool queries make answers more checkable and focused.
• Pros: Scholar combines paper discovery, comparison, literature reviews, and hypothesis generation.
• Pros: Write can draft, cite, edit, and export to PDF or DOCX, covering several steps in document work.
• Cons: The five-source limit restricts larger source collections.
• Cons: Free includes no agent credits, ads, and only one daily upload capped at 25MB.
• Cons: Pro and Max prices are billed annually, and higher daily upload limits require a paid plan.

Alternatives

Perplexity is worth considering for readers who want a freemium search option with limited daily use on its free plan and a $20.00 monthly Pro plan for serious work with expanded use. Consensus may suit readers focused on paper searches: its free tier includes unlimited Papers searches, limited Pro messages, three Deep reviews per month, ten Study Snapshots per month, and 30 API and MCP calls per month. Kimi Deep Research is another freemium option, with a free allowance measured by token consumption rather than query count.

Readers comparing other tools can also consider Genspark Design, Gab AI Research Assistant, Felo AI Research, Innogath, and You.com.

Verdict

Liner is a strong choice for professionals and researchers who want cited discovery, academic synthesis, and writing tools together, especially if they will use its source collections and file workflows. Choose Pro for a more modest individual workload or Max for heavier uploads; look elsewhere if you need to work across larger source sets or prefer a less constrained free tier.