Liner

Liner is an AI search, research, and writing platform with cited answers, paper discovery, and source-backed drafting in one workflow.

Writing Assistants Research Tools AI Search Engine

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Overview

Liner is an AI assistant platform for professionals that combines cited search, academic research, and writing in a single workflow. The site positions three main product areas: Liner Search for accurate answers, Liner Scholar for research and paper discovery, and Liner Write for source-backed drafting and editing.

Across the product pages, Liner emphasizes verifiable answers, paper discovery, and a workflow that keeps search, synthesis, drafting, and editing in one place. It is presented as a tool for people who need to check sources, compare papers, build literature reviews, draft documents, and revise them without switching between separate apps.

Core capabilities

Cited AI search

Get answers with citations from reputable sources, including the ability to check each citation and ask follow-up questions.

Deep Research workflow

Use Deep Research to gather organized information on a topic and review it in a report-style format for early-stage research.

Source-focused research

Search across a large paper corpus and use source collections when you want the model to work only from a specific set of documents.

Research-backed drafting

Write with templates and rough drafts that draw on current web information and the site’s paper corpus, then refine the result in the editor.

In-document editing

Edit directly in the document with highlight-to-chat editing, inline citations, formatting tools, and support for images and tables.

Document uploads

Upload files for summarization and analysis, with plan-based limits that vary by tier.

Where it fits

Fact-checking and source review
Use cited search when you need a fast factual answer and want to inspect the sources before relying on it in a report or client deliverable.
Academic research
Use Scholar when you are finding papers, comparing citations, or building literature reviews for coursework or lab work.
Research-backed writing
Use Write when you need to move from topic to draft, then revise the same document with citations, source references, and editing tools.
Focused synthesis on a topic
Use Deep Research and source collections when a project requires synthesis from a specific set of documents or a broader set of papers.
Team research workflows
Use the team and enterprise plans when an organization needs centralized billing, admin controls, and a dedicated workspace.

Pros and Cons

Pros

Cited answers are central to the search experience, which supports source checking and follow-up verification.
Scholar and Search are tailored to research workflows such as paper discovery, literature reviews, and document summarization.
Write keeps research, drafting, citations, and editing in one workspace, reducing tab switching.
The pricing page shows a single plan can cover Liner, Liner Scholar, and Liner Write for paid users.
Team and enterprise options are available for organizations that need centralized management and governance.

Cons

The public pages do not fully document integrations, mobile details, or all collaboration and admin capabilities.
Some capabilities and limits depend on plan level, so the free and paid tiers are not identical.
The site provides limited detail on data handling and team-use constraints beyond the pricing and security mentions.

FAQ

What is the difference between Liner, Liner Scholar, and Liner Write?

Liner Search is the product for cited AI search, Liner Scholar is aimed at academic research, and Liner Write is focused on drafting and editing in one workspace.

Do I need separate subscriptions for Liner, Liner Scholar, and Liner Write?

The pricing page says one paid plan can apply across Liner, Liner Scholar, and Liner Write, while the free plan and paid plans differ in credits, file uploads, and access to features such as ad-free search.

If I publish blog posts every week, should I use Liner or Liner Write?

Liner Write is the better fit when the main task is producing weekly posts, reports, newsletters, or other drafts that need research-backed writing and editing in one place.

Can I also write and search in Liner Scholar?

Yes. The site says you can search and write in Liner Scholar as well, and Liner Write also supports chat, citations, and editing in the document.

Can I use it on mobile?

The homepage includes a mobile question in its FAQ, but the collected text does not provide a detailed mobile feature description, so mobile support should be confirmed on the product itself.