Liner vs SciSpace

Liner

• 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

SciSpace

• Students and researchers who want search, reading and writing tools in one place
• Getting plain-language explanations of dense papers, equations and tables
• Research teams of 2 to 300 people billed per user

Liner

• 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.

SciSpace

• SciSpace's site blocked automated reading, so prices come from an Internet Archive copy of its pricing page captured on September 30, 2026.
• The limits of the free tier could not be confirmed on a SciSpace page.
• Paid plans meter usage in monthly credits: 1,200 on Premium, 10,000 on Advanced and 40,000 or more on Max.
• The mobile app is listed for iPhone and iPad; no Android app was found on Google Play (US) when checked.

Liner

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.

SciSpace

Literature Review

Ask a research question in plain language and get answers drawn from a repository of more than 270 million papers, each with references to its sources.

Chat with PDF

Ask questions about a paper or PDF and get answers backed by citations that point to where in the source they came from.

SciSpace Agent and Biomedical Agent

Agents take on research tasks and draw on the plan's monthly credits. Each plan also caps how many tasks run at once: 4 on Premium, 8 on Advanced and 16 on Max.

Writing and citation tools

AI Writer, Paraphraser and AI Detector sit beside a Citation Generator that formats references in APA, MLA and more than 2,300 other styles.

Extract Data

Pulls the summary, conclusions and findings out of several PDFs at once so papers can be compared side by side.

Chrome extension

Explains highlighted text, math and tables on any web page or PDF, answers follow-up questions with citations and replies in 13 languages.

Liner

• 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.

• EnterpriseCustom

  Everything in Team plus a dedicated manager, onboarding sessions, audit logs and higher discount rates.

SciSpace

• Premium$12

  per month, billed annually ($144); $20 billed monthly

  1,200 credits a month and up to 4 concurrent tasks.

• Teams (Premium)$15

  per user / month, billed annually ($180); $25 billed monthly

  For 2 to 300 users, each with 1,200 credits a month and up to 4 concurrent tasks.

• Advanced$70

  per month, billed annually ($840); $90 billed monthly

  10,000 credits a month and up to 8 concurrent tasks.

• Teams (Advanced)$75

  per user / month, billed annually ($900); $100 billed monthly

  For 2 to 300 users, each with 10,000 credits a month and up to 8 concurrent tasks.

• MaxFrom $160

  per month, billed annually ($1,920); from $200 billed monthly

  Priced by credit tier, from 40,000 credits a month up to 300,000, with up to 16 concurrent tasks.

• Teams (Max)$175

  per user / month, billed annually ($2,100); $220 billed monthly

  For 2 to 300 users, each with 40,000 credits a month and up to 16 concurrent tasks.

Liner

• Annual discount

  Lower monthly rate with annual billing

  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.

SciSpace

• Annual discount

  Save 20% to 40% with annual billing

  Annual billing brings Premium from $20 to $12 a month (40% off), Advanced from $90 to $70 (22% off) and the entry Max tier from $200 to $160 (20% off).