# Liner

> AI search with cited answers, research agents and a writer

Liner is an AI search and research tool sold as three products on one subscription. Liner answers questions with a citation on each line and can run Deep Research reports, Liner Scholar adds agents for literature reviews, citation recommendations and hypothesis work over an index of more than 480 million papers, and Liner Write drafts and edits documents. It has web, desktop and mobile apps and browser extensions, plus a search API for developers.

- **Category:** AI Research Tools
- **Made by:** Liner
- **Website:** https://liner.com
- **Runs on:** Web, macOS, Windows, iOS, Android, Browser extension
- **Facts last checked:** Oct 5, 2026

## Pricing

Liner has a free plan. Paid plans start at $14.99 per month, billed annually ($17.99 billed monthly).

- **Pricing model:** Free plan
- **Free plan:** Unlimited Advanced Search with ads in the answers, 1 file upload a day of up to 25 MB and 10 Research Assistant uses a day.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| Free | $0 | Unlimited Advanced Search with ads in the answers, 1 file upload a day of up to 25 MB and 10 Research Assistant uses a day. |
| Pro | $14.99 per month, billed annually; $17.99 billed monthly | 1,000 agent credits, 20 file uploads a day of up to 100 MB, ChatGPT, Gemini and Claude models, and no ads. Covers Liner, Liner Scholar and Liner Write. |
| Max | $29.99 per month, billed annually; $35.99 billed monthly | Everything in Pro with 2,500 agent credits and unlimited file uploads of up to 200 MB each. |
| Team | $26.99 per seat / month | For 2 to 20 members: everything in Max plus central billing, a workspace with admin controls and team data excluded from AI training. |
| Enterprise | Custom | Everything in Team plus a dedicated manager, onboarding sessions, audit logs and higher discount rates. |

Read from https://liner.com/pricing on Oct 5, 2026. Prices change, so confirm with Liner before buying.

## Ways to pay less

- **Lower monthly rate with annual billing** (Annual discount): The pricing page labels annual billing as saving 20%. Pro is $14.99 a month billed annually against $17.99 monthly, and Max is $29.99 against $35.99, about 17% less. Source: https://liner.com/pricing

## Key features

- **Cited answers:** Answers carry a citation on each line that opens the source. Follow-up questions continue the thread, and an answer can be turned into a mind map.
- **Deep Research:** Gathers information on a topic and returns it as an organized report while showing its line of reasoning. Each request uses 40 agent credits.
- **Liner Scholar agents:** Agents for academic work include Literature Review, Citation Recommender, Research Tracer, Hypothesis Generator and Peer Review. Each request costs between 30 and 80 credits.
- **File uploads:** Upload papers and PDFs to get summaries and ask questions about them: 1 file a day on Free, 20 a day on Pro and unlimited on Max.
- **Liner Write:** A writing workspace that drafts from a topic, shapes ideas into emails, newsletters and reports, and lets you search and edit in the same window.
- **Search API and MCP:** Developers can call Liner's search and answer agents through an API, and MCP servers expose its web search and scholar search to other AI agents.

## Good for

- People who want every line of an AI answer tied to a source
- Students drafting a literature review or looking for citations
- Users who want search, research and writing on one subscription
- Small teams: the Team plan covers 2 to 20 members

## Worth knowing

- The free plan shows ads in answers and allows 1 file upload a day; the plan table lists 0 agent credits for it, though the FAQ mentions limited credits.
- Agents and external models spend credits: Pro includes 1,000 and Max 2,500, and one Literature Review request uses 40.
- The site's FAQ says Liner Scholar and Liner Write are supported only on desktop.
- Liner does not offer refunds; a subscription can be canceled before it renews.

## What people say

- **App Store rating of the iPhone and iPad app:** 4.4 out of 5 from 1,371 ratings in the United States, read Oct 5, 2026. This is the store's rating of the app, not a score from ToolGPA. Source: https://apps.apple.com/us/app/id955395198

## Works with

ChatGPT, Gemini, Claude, Chrome, Microsoft Edge

**Tags:** Research, AI search, Citations, AI agents, Long-form writing, Highlights, Public API

## Alternatives

- [Perplexity](https://toolgpa.com/tools/perplexity): AI search assistant that answers questions with cited sources. [Compare](https://toolgpa.com/compare/liner-vs-perplexity)
- [SciSpace](https://toolgpa.com/tools/scispace): AI research platform for literature review and reading papers. [Compare](https://toolgpa.com/compare/liner-vs-scispace)
- [Elicit](https://toolgpa.com/tools/elicit): AI research assistant for literature search and systematic reviews. [Compare](https://toolgpa.com/compare/elicit-vs-liner)
- [Consensus](https://toolgpa.com/tools/consensus): AI search engine that answers questions from peer-reviewed papers. [Compare](https://toolgpa.com/compare/consensus-vs-liner)
- [Paperguide](https://toolgpa.com/tools/paperguide): AI research platform for literature and systematic reviews. [Compare](https://toolgpa.com/compare/liner-vs-paperguide)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 5, 2026:

- https://liner.com/pricing
- https://liner.com
- https://liner.com/search
- https://liner.com/scholar
- https://liner.com/developers
- https://liner.com/about
- https://liner.com/terms

Page: https://toolgpa.com/tools/liner
Listed by ToolGPA (toolgpa.com).