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Undermind

Free plan APIExtensionWeb

What Undermind is

Undermind is an AI co-researcher that helps researchers find and assess scientific literature. Its deep search evaluates hundreds of papers, follows citation trails, and uses semantic search across more than 200 million papers, according to the maker. Users can revise reports, inspect full texts, pull out details, and develop their understanding of a topic. Inline citations connect statements to the papers behind them, and alerts can notify users when new work appears in research areas they follow. The service fetches open-access PDFs automatically; paywalled PDFs can be read after users upload them to a workspace. The MCP connection guide lists clients including ChatGPT, Claude, Cursor, VS Code, Codex, Claude Code, GitHub Copilot, and Microsoft Copilot. A free plan has standard chat and search limits. Team costs $15 per person per month, billed annually; Pro costs $16 a month, billed annually. Enterprise pricing is custom. Plans and features vary, and the listed platforms include API, extension, and web.

Who it suits

Undermind suits researchers who need help finding and reviewing scientific papers, tracing citations, and following new publications in selected areas. Teams can consider it for shared workspaces and connections to listed compatible clients.

What it does well

Searches semantically across more than 200 million papers
Follows citation trails and provides inline citations
Can alert users to relevant new papers
Free plan includes shared workspaces and agent connections
Works with listed MCP-compatible clients

What to know first

Free plan has standard limits on chats and searches
Team and Pro plans require annual billing
Paywalled PDFs require workspace upload

Limits

Free has standard rate limits on chats and searches. Team costs $15 per person per month with annual billing; Pro costs $16 a month with annual billing and offers ten times higher usage limits, deepest full-text analysis, and unlimited workspaces, files and paper libraries.

Plans

Plan	Billed and limits	Price
Free	Standard rate limits on chats and searches · shared workspaces · connect agents	Free
Team	per person, billed annually · Pro features · team member management · priority customer support · centralized billing	$15 a month
Pro	billed annually · 10x higher usage limits · deepest full text analysis · unlimited workspaces, files, and paper libraries	$16 a month
Enterprise	custom pricing · Increased compute · organizational login · onboarding · admin dashboard · custom terms/SLA/security review · dedicated support	On request

As undermind.ai lists them, read 8 Oct 2026. The maker's own page has the final word.

Getting started

Visit https://www.undermind.ai/.
Use the Free plan or choose a paid plan.
Access Undermind through the web, API or extension.
Connect a compatible MCP client if desired.
Upload a paywalled PDF to a workspace to have it read.

Verdict

Undermind combines literature search, paper review, citation tracing, and research alerts. Its free plan has usage limits, while paid plans add higher limits and other capabilities at the listed annual-billing prices.

Questions

Is there a free plan?

Yes. Free costs nothing and includes standard rate limits on chats and searches, shared workspaces and agent connections.

How much do paid plans cost?

Team is $15 per person per month, billed annually. Pro is $16 a month, billed annually; Enterprise uses custom pricing.

Which platforms does Undermind support?

The listed platforms are web, API and extension.

Which clients can connect through MCP?

The guide names ChatGPT, Claude, Cursor, VS Code, Codex, Claude Code, GitHub Copilot, Microsoft Copilot and other compatible clients.

Can it read paywalled PDFs?

Yes. The MCP guide says paywalled PDFs can be read after they are uploaded to a workspace.

Who makes Undermind?

The company is Undermind AI, Inc. The maker says it was started by two quantum physics PhDs from MIT.

Facts from Undermind's own pages

Alerts: Undermind can notify users when relevant papers are published in areas they follow. · undermind.ai, 8 Oct 2026
Citation checking: Inline citations let users trace statements back to source papers. · undermind.ai, 8 Oct 2026
Deep search: It reads and evaluates hundreds of papers and follows citation trails to find relevant research. · undermind.ai, 8 Oct 2026
Enterprise data use: The maker says enterprise proprietary R&D data is not used to train AI models and model providers do not retain or train on it. · undermind.ai, 8 Oct 2026
Enterprise security: Enterprise agreements describe encryption in transit and at rest, strict access controls, and independent penetration testing. · undermind.ai, 8 Oct 2026
Founding background: The maker says Undermind was started by two quantum physics PhDs from MIT. · undermind.ai, 8 Oct 2026
Full-text access: The MCP guide says it fetches open-access PDFs automatically and can read paywalled PDFs after workspace upload. · undermind.ai, 8 Oct 2026
Integrations: The MCP connection guide lists ChatGPT, Claude, Cursor, VS Code, Codex, Claude Code, GitHub Copilot, Microsoft Copilot, and other compatible clients. · undermind.ai, 8 Oct 2026
Literature coverage: The maker says its search uses semantic search over more than 200 million papers. · undermind.ai, 8 Oct 2026
Maker: The terms identify the company as Undermind AI, Inc. · undermind.ai, 8 Oct 2026
Privacy: The privacy policy says Undermind does not sell personal data or share it for cross-context behavioral advertising. · undermind.ai, 8 Oct 2026
Product: Undermind describes itself as an AI co-researcher that finds relevant scientific literature for researchers. · undermind.ai, 8 Oct 2026
Research workflow: Users can iterate on reports, inspect full texts, extract details, and refine their understanding. · undermind.ai, 8 Oct 2026
Security practices: The enterprise security overview lists TLS encryption, role-based access control, multifactor authentication, penetration testing, vulnerability scanning, and daily backups. · undermind.ai, 8 Oct 2026
Support: The Team plan includes priority customer support, while Enterprise includes dedicated support; the site lists [email protected]. · undermind.ai, 8 Oct 2026