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AnswerThis vs Undermind

Features, pricing, ratings, and pros and cons, side by side.

AnswerThis logo

AnswerThis

AI research assistant that searches papers and drafts literature reviews with verifiable citations

Freemium
Visit websiteView details
Undermind logo

Undermind

AI research assistant that searches, reads and cites scientific papers for literature reviews

Freemium
Visit websiteView details

Verdict

AnswerThis and Undermind are both AI Assistants tools. Both have a free plan or trial.

Best overall

AnswerThis

  • Students
  • Academic Researchers
  • Research Labs
  • Universities and Libraries

Choose AnswerThis if

  • You want a tool built for literature reviews with traceable citations, systematic reviews, managing a paper library, and drafting academic manuscripts.
  • Each claim links to a source passage, which makes citations checkable.
  • Free plan with no card required.

Choose Undermind if

  • You want a tool built for deep literature reviews, finding hard-to-surface papers on a niche topic, and tracking new publications in a field.
  • Built specifically for scientific literature, with citation-following and full-text reading.
  • In-line citations let users trace claims to source papers.
Best for beginners
AnswerThis
Best for business
AnswerThis

Features

17 features compared.

  • Literature Search
    AnswerThis
    Available
    Undermind
    Not available
  • Literature Review Drafting
    AnswerThis
    Available
    Undermind
    Not available
  • AI Writer
    AnswerThis
    Available
    Undermind
    Not available
  • Library and Canvas
    AnswerThis
    Available
    Undermind
    Not available
  • Systematic Review
    AnswerThis
    Available
    Undermind
    Not available
  • Meta-analysis and Evidence Grading
    AnswerThis
    Available
    Undermind
    Not available
  • Research Gaps and Citation Mapper
    AnswerThis
    Available
    Undermind
    Not available
  • Regulatory and Trial Connectors
    AnswerThis
    Available
    Undermind
    Not available
  • Conversational Deep Search
    AnswerThis
    Not available
    Undermind
    Available
  • Citation Trail Following
    AnswerThis
    Not available
    Undermind
    Available
  • Cited Reports
    AnswerThis
    Not available
    Undermind
    Available
  • Full-Text Analysis
    AnswerThis
    Not available
    Undermind
    Available
  • Custom Tables
    AnswerThis
    Not available
    Undermind
    Available
  • Relevance Sorting and Filtering
    AnswerThis
    Not available
    Undermind
    Available
  • New Paper Alerts
    AnswerThis
    Not available
    Undermind
    Available
  • Workspaces and Libraries
    AnswerThis
    Not available
    Undermind
    Available
  • Agent Connections
    AnswerThis
    Not available
    Undermind
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    AnswerThis
    Freemium
    Undermind
    Freemium
  • Free plan
    AnswerThis
    Yes
    Undermind
    Yes
  • Starting price
    AnswerThis
    $0
    Undermind
    $0
  • Plans
    AnswerThis
    4 plans
    Undermind
    4 plans

AnswerThis plans

  • Free

    $0

    For students getting started with cited literature search

    • Deep search across 250M+ papers
    • cited answers and summaries
    • 5 saved projects
    • export to Zotero
    • Mendeley and EndNote

  • Pro

    Most popular

    $35/user/mo

    Individual researchers needing frontier models and systematic review

    • Everything in Free
    • frontier models with no rate caps
    • agent-led systematic review and PRISMA
    • AI Writer with full manuscript drafting
    • unlimited projects and tables
    • 48-hour support

  • Lab & Team

    $75/month

    Research groups collaborating on shared reviews and libraries

    • Everything in Pro
    • shared workspaces and projects
    • dual-reviewer screening
    • meta-analysis and evidence grading
    • centralized billing and admin
    • minimum 3 seats

  • Max

    Custom/custom

    Site licenses for institutions and libraries

    • Everything in Lab
    • campus-wide site license
    • SSO and LMS integration
    • librarian admin console
    • onboarding and training

Undermind plans

  • Free

    $0

    Exploratory research with standard usage limits

    • Chat
    • deep searches and reports
    • shared workspaces
    • connect external agents
    • standard usage limits

  • Pro

    Most popular

    $16/month

    Ongoing, serious research

    • Everything in Free
    • newest AI models
    • deeper full-text analysis
    • 10x higher usage limits than Free
    • unlimited workspaces
    • files and paper libraries

  • Team

    $15/user/mo

    Research groups that need shared administration

    • Everything in Pro
    • team member management
    • priority support
    • centralized billing

  • Enterprise

    Custom/custom

    Organizations with security and compliance needs

    • Everything in Team
    • increased compute
    • organization-wide login
    • onboarding seminars
    • admin dashboard
    • custom terms
    • SLA and security review
    • dedicated support

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

AnswerThis
7.8overall
Undermind
7.7overall

AnswerThis leads in 4 categories and Undermind in 1.

  • Ease of Use

    AnswerThis leads by 0.2
    AnswerThis
    8.2
    Undermind
    8.0

  • Feature Depth

    AnswerThis leads by 0.2
    AnswerThis
    8.4
    Undermind
    8.2

  • Value for Money

    Undermind leads by 0.2
    AnswerThis
    7.6
    Undermind
    7.8

  • Performance & Speed

    AnswerThis leads by 0.3
    AnswerThis
    7.8
    Undermind
    7.5

  • Documentation & Support

    AnswerThis leads by 0.2
    AnswerThis
    7.2
    Undermind
    7.0

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

AnswerThis

Pros

  • Each claim links to a source passage, which makes citations checkable.
  • Free plan with no card required.
  • Systematic review tooling with PRISMA, dual-reviewer screening and meta-analysis, which many general assistants lack.
  • Two-way sync with Zotero, Mendeley and EndNote.
  • States that user content is not used for model training.

Cons

  • Free plan is limited to 5 saved projects.
  • Pricing page shows conflicting figures (plan cards versus a credits table), and Max has no clear published price.
  • No mobile app or public API documentation found.
  • Independent academic evaluations note that AI literature tools can miss papers, so results should be checked against traditional databases.

Undermind

Pros

  • Built specifically for scientific literature, with citation-following and full-text reading.
  • In-line citations let users trace claims to source papers.
  • Free tier available, with paid Pro at $16 per month billed annually.
  • Alerts and libraries support ongoing tracking of a field, not just one-off searches.
  • Can be connected to Claude, ChatGPT and other agents.

Cons

  • Exact usage limits are not published; Pro is only described as 10x Free.
  • Not designed for general web research, news or non-technical topics.
  • Web-only; no iOS or Android app was found.
  • Published benchmark results are vendor-reported.

Platforms

  • Web
    AnswerThis
    Supported
    Undermind
    Supported
  • Windows
    AnswerThis
    Not supported
    Undermind
    Not supported
  • macOS
    AnswerThis
    Not supported
    Undermind
    Not supported
  • iOS
    AnswerThis
    Not supported
    Undermind
    Not supported
  • Android
    AnswerThis
    Not supported
    Undermind
    Not supported
  • API
    AnswerThis
    Not supported
    Undermind
    Not supported
  • Browser Extension
    AnswerThis
    Not supported
    Undermind
    Not supported

Integrations

AnswerThis

6 integrations
  • Zotero
  • Mendeley
  • EndNote
  • PubMed
  • Embase
  • Cochrane

Undermind

2 integrations
  • Claude
  • ChatGPT

Company

  • Company
    AnswerThis
    AnswerThis
    Undermind
    Undermind
  • Founded
    AnswerThis
    2024
    Undermind
    Not listed
  • Headquarters
    AnswerThis
    San Francisco, CA
    Undermind
    Not listed
  • Listing
    AnswerThis
    Claimed
    Undermind
    Claimed

Frequently asked questions

Is AnswerThis better than Undermind?

It depends on your workflow. AnswerThis is built for literature reviews with traceable citations, systematic reviews, managing a paper library, and drafting academic manuscripts. Undermind is built for deep literature reviews, finding hard-to-surface papers on a niche topic, and tracking new publications in a field.

What are the key feature differences between AnswerThis and Undermind?

AnswerThis: AI research assistant that searches papers and drafts literature reviews with verifiable citations. Undermind: AI research assistant that searches, reads and cites scientific papers for literature reviews.

Does AnswerThis or Undermind have a free plan?

Yes, both do. AnswerThis is freemium and Undermind is freemium, and each has a free plan or trial.

Which is cheaper, AnswerThis or Undermind?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.