Liner

Liner suits professionals and researchers who want to move from cited search and paper discovery into drafting documents. Its range is a strength, but upload caps and agent-credit allowances make plan choice part of the workflow.

Overview

Liner combines AI search with academic research and writing tools. Search answers cite sources users can inspect, and search can be directed at a specific pool of material. Scholar supports paper discovery, citation following, comparisons across papers, literature reviews, and research hypotheses; Write can draft from a topic, add citations, revise text with AI, and export to PDF or DOCX.

That connected workflow is useful when a task spans discovery, synthesis, and document preparation. It is less compelling if the need is only a general chatbot, or if the work requires more than five sources at a time: Liner's stated source limit is five.

Key features

Search and research

Citations give users a way to check the basis of search answers rather than treating them as unsupported summaries. Scholar's paper comparison and literature-review functions suit academic work involving multiple publications, while source-pool search helps keep questions focused on selected material. Liner accepts web and file sources.

Writing and models

Write links research to a practical output: a draft can receive citations, AI editing, and PDF or DOCX export. Pro and Max include access to ChatGPT, Gemini, and Claude models, which may suit users who want those options within the same paid plan. Free does not include those model-access benefits and gives answers with ads.

Files and privacy

Upload allowances rise from one file per day, capped at 25MB, on Free to 20 per day up to 100MB on Pro and unlimited daily uploads up to 200MB on Max. Those differences are consequential for document-heavy work: Free is restrictive for frequent file analysis, while Max removes the daily count cap but still sets a file-size ceiling. Liner says account and activity deletion can be requested and that it checks for sensitive personal data and securely deletes it. It lists SOC 2 Type I and II, HIPAA, and ISO 27001:2022 credentials.

Pricing

Liner has a free plan and paid plans. Compare the stated credit and upload allowances with your actual workload, especially if frequent uploads or agent use are central to it.

• Free — free. Includes zero agent credits per month, unlimited Advanced Search, Image Generation and Deep Research access, one daily upload up to 25MB, and answers with ads. It is a way to use search and explore research features without a subscription, but the zero credits and small upload allowance constrain agent-driven, file-heavy work.
• Pro — $14.99 a year (billed $14.99/month, billed annually; monthly price shown: $17.99). Includes 1,000 agent credits, unlimited Advanced Search, Image Generation and Deep Research access, 20 daily uploads up to 100MB each, ChatGPT, Gemini, and Claude models, and ad-free search. It suits an individual needing regular research and file uploads at a lower monthly price with annual billing; the annual term matters, and its daily upload cap remains.
• Max — $29.99 a year (billed $29.99/month, billed annually; monthly price shown: $35.99). Includes 2,500 agent credits, unlimited Advanced Search, Image Generation and Deep Research access, unlimited daily uploads up to 200MB each, the three named model families, and ad-free search. It fits an individual with heavier agent or document demands, at a higher annual-billing price than Pro.
• Team — $26.99 a month, per seat. Covers 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 a small group needing shared administration and the stated privacy commitment; per-seat billing raises the cost with each member.
• Enterprise — custom pricing. Includes everything in Team, a dedicated manager, onboarding sessions, audit logs, and higher discount rates. It is aimed at organizations seeking those support and administration provisions rather than a fixed-price individual plan.

Platforms

Liner is available on Android, iOS, macOS, Windows, and the web, as well as through an extension and API. That spread accommodates desktop and mobile use alongside extension- or API-based access.

Who it's for

Liner Write identifies sales personnel, marketers, small-business owners, and consultants as intended users. Researchers also have a clear reason to consider it: Scholar's paper discovery, citation following, and comparison features support literature-focused work. People who regularly process many sources at once should weigh the five-source limit before making it their main research workspace.

Pros and cons

• Pros: Search citations can be followed and checked, and Scholar adds dedicated paper-synthesis tools.
• Pros: Write connects drafting, citations, AI editing, and PDF or DOCX export in one workflow.
• Pros: Paid individual plans include named model options; Max allows unlimited daily file uploads, subject to a 200MB per-file cap.
• Cons: Free has no agent credits, ads, and only one upload daily up to 25MB, limiting sustained file-based work.
• Cons: Pro and Max prices shown are tied to annual billing, while their displayed monthly prices are higher.
• Cons: The five-source limit can be a poor match for projects that need broader source sets.

Alternatives

Perplexity is worth considering for individual users who want a freemium search option with limited daily use on its free plan, or expanded use on its $20 a month Pro plan.

Genspark Design is an alternative for readers comparing freemium tools; its free plan provides 100 credits per day.

Kimi Deep Research offers a free plan with a limited monthly allowance measured by token consumption rather than query count, which may suit readers who prefer that usage measure.

Consensus is another freemium option, with unlimited paper searches on its free tier alongside monthly caps on deep reviews, study snapshots, and API and MCP calls.

Felo AI Research has a free Standard plan with daily credits and caps for professional searches and file analyses, making it another option for users comparing free research allowances.

Gab AI Research Assistant is an alternative with a free plan that starts with 250 credits and includes web search and file analysis.

Innogath offers a free plan with 500 monthly credits, basic-depth Deep Research, and one concurrent research task; its free trial may also interest readers comparing entry options.

You.com is another freemium alternative, with a free plan offering 100 queries per day and web and news results.

Browse more options in AI Research Assistants.

Verdict

Liner is a strong fit for professionals and researchers who need cited search, academic paper workflows, and document drafting together. Its main advantage is that connected path from source discovery to exportable writing; its main drawback is the combination of a five-source limit, plan-dependent upload caps, and credits that make heavier use more expensive. Choose it when those integrated workflows matter, and look elsewhere if your work routinely exceeds its source limit or you want an individual plan without annual billing.