AnswerThis vs Undermind

AnswerThis

• Graduate students writing a literature review for a thesis
• Clinical and medical teams running systematic reviews
• Researchers who keep their references in Zotero or Mendeley
• Writers who want search, library and drafting in one tab

Undermind

• Complex research questions where keyword search misses relevant papers
• Academics, who pay $16 a month on annual billing instead of the $60 industry rate
• People who want literature search inside Claude, ChatGPT or a coding agent
• R&D teams tracking new publications in specific technical areas

AnswerThis

• Pro includes 10 Max queries and 2 systematic reviews a month; unlimited systematic reviews start on Research.
• The marketing pricing page and the in-app pricing page disagree on tier names and limits; the plans here follow the in-app page.
• The marketing page also lists separate Industry plans at higher prices, starting at $90 per seat a month billed monthly.
• Only a web app is listed; the site mentions no mobile or desktop apps.

Undermind

• Free-tier searches read abstracts and metadata only; full-text search of open-access papers and preprints needs Pro.
• Industry pricing is far higher than academic: Pro is $60 a month billed annually against $16.
• A deep search typically takes about 2 minutes to finish, so results are not instant.
• Charges are non-refundable once a billing period has begun, except where the law requires a refund.

AnswerThis

Cited search and chat

Ask a question or paste a protocol, then filter by database, journal quality, date and study type. Each answer carries clickable citations that jump to the passage they rely on.

Library

Collections, tags, highlights and full-text search across the papers you save or upload, with sync to Zotero and Mendeley.

AI Writer

Import a draft or start a new one, cite from the library in one click, check for AI-written or plagiarized text and switch between more than 2,000 citation styles.

Systematic review pipeline

Screening, data extraction, meta-analysis and evidence grading run in one workflow with each change logged. The site describes it as PRISMA and Cochrane compliant.

Shared workspaces

Co-authors can be invited into a shared workspace to suggest changes, with roles and permissions set by the owner.

Research gaps and citation maps

Separate tools look for research gaps, map citations, run bibliometric analysis and draw diagrams from the literature.

Undermind

Deep literature search

You describe a research goal in plain language and answer follow-up questions. Undermind then reads and evaluates hundreds of papers and follows citation trails; a typical search takes about 2 minutes.

Reports with in-line citations

Findings come back as a report in which statements carry in-line citations that lead to the source paper, alongside a paper list you can sort and filter to judge relevance.

Chat and custom tables

After a search you can brainstorm with an assistant grounded in the papers it found, extract details from full texts and generate custom tables.

Alerts for new papers

Undermind keeps track of your areas of interest and notifies you when relevant papers are published.

Agent connections over MCP

An MCP server lets assistants and coding agents such as Claude, ChatGPT, Cursor and VS Code run Undermind searches. Connecting agents is included in the Free plan.

Full-text search on Pro

The Free tier searches abstracts and metadata. Pro adds compute to search the full texts of nearly all open-access and preprint articles.

AnswerThis

• Free$0

  Search across 250M+ papers with cited answers and summaries, 5 saved projects and export to Zotero, Mendeley and EndNote.

• Pro$14

  per month, billed yearly ($168); $35 billed monthly

  Unlimited basic queries, 10 Max queries and 2 systematic reviews a month, unlimited library storage and the AI Writer on standard models.

• Research$30

  per month, billed yearly ($360)

  Unlimited systematic reviews, 50 Max queries a month on advanced research models, full-text AI screening and an onboarding call.

• Max$100

  per month, billed yearly ($1,200)

  300 Max queries a month on frontier models, unlimited systematic reviews and library, and priority support.

Undermind

• Free$0

  Chat, deep searches and reports with standard rate limits, shared workspaces and agent connections over MCP.

• Pro (Academic)$16

  per month, billed annually ($192); $20 billed monthly

  The newest AI models, full-text analysis, 10x higher usage limits, and unlimited workspaces, files and paper libraries.

• Pro (Industry)$60

  per month, billed annually ($720); $75 billed monthly

  The same Pro features at the industry rate.

• Team (Academic)$15

  per person / month, billed annually; $18.70 billed monthly

  From 3 seats. Pro features plus member management, priority support and central billing. Falls to $12.50 per person at 60 or more seats.

• Team (Industry)$60

  per person / month, billed annually; $75 billed monthly

  From 3 seats at the industry rate, with member management, priority support and central billing.

• EnterpriseCustom

  Increased compute, sitewide organizational login, an admin dashboard, onboarding seminars, and custom terms, SLA and security review.

AnswerThis

• Annual discount

  Save 60% with annual billing

  The in-app pricing page labels annual billing as saving 60%. Pro is $14 a month billed yearly ($168 up front) against $35 a month billed monthly.

Undermind

• Annual discount

  Save 20% with annual billing

  Pro is $16 a month billed annually against $20 billed monthly at the academic rate, and $60 against $75 at the industry rate. The pricing section labels this a 20% saving.

• Education

  Academic pricing from $16 a month

  Choosing Academic in the pricing section shows Pro at $16 a month billed annually or $20 billed monthly, against $60 and $75 under Industry.

• Other savings

  Volume pricing on academic Team plans

  On annual billing the academic Team price per person is $15 for 3 to 10 seats, $14.17 for 11 to 25, $13.33 for 30 to 50 and $12.50 for 60 to 200.