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Semantic Scholar logo
Semantic Scholar
✓ verifiedFree

Free AI-powered academic search engine indexing 236M+ papers, for researchers wanting semantic literature discovery and an augmented reader.

7.9M visits/mo13K saves
Infranodus logo
Infranodus
✓ verifiedFreemium

Knowledge-graph text analysis tool that surfaces topics and content gaps for research, SEO and market analysis.

71K visits/mo
The Rundown AI logo
The Rundown AI
✓ verifiedFree

Daily AI newsletter that condenses AI news, tool spotlights, and practical use cases into a five-minute read for over two million readers.

630K visits/mo
Open Knowledge Maps logo
Open Knowledge Maps
✓ verifiedFree

Free nonprofit tool that visualizes scientific literature as topic maps, clustering papers to speed research discovery.

113K visits/mo1.1K saves
Connected Papers logo
Connected Papers
✓ verifiedFreemium

Widely used visual tool for exploring related academic papers.

873K visits/mo
Pricing

No public pricing

No public pricing

No public pricing

No public pricing

Free: USD 0
Academic: USD 3 /month*
Business: USD 10 /month*
Academic Group: 3 USD / seat / month*
Business Group: 10 USD / seat / month*
Academic Library: Request a Quote
Core features
  • AI-powered semantic search across 236M+ papers
  • Semantic Reader for augmented, contextual paper reading
  • Free public API for paper search and metadata
  • Author and topic discovery
  • Citation graph exploration
  • Beta program for new features
  • Text network / knowledge graph visualization
  • Topic modeling and content-gap detection
  • AI insight and question generation
  • GraphRAG and MCP server for LLMs
  • Many import sources (PDF, CSV, YouTube, Google, web)
  • Obsidian plugin and browser extension
  • Daily AI news digest delivered by email
  • Practical application tips alongside each story
  • Exclusive interviews with AI industry leaders
  • AI University with guides, tools directory, and courses
  • Article archive on AI, tech, and robotics
  • AI-generated visual maps of research topics
  • Clusters papers into themes
  • Open-access resource discovery
  • Open-source and nonprofit
  • Custom integrations/embedding for organizations
  • Visual graph generation of related academic papers
  • Discovery of prior and derivative works
  • Identification of important and relevant papers
  • Exploration of research field dynamics
Use cases
  • Researchers searching scientific literature across disciplines
  • Developers building applications on top of scholarly data via the API
  • Students exploring citation networks for a topic
  • Librarians and academics needing free literature discovery tools
  • Research and idea generation
  • SEO content-gap analysis
  • Qualitative and market research
  • Professionals wanting a quick daily AI news briefing
  • Readers seeking practical ways to apply new AI tools
  • Learners looking for structured AI courses and guides
  • Following exclusive interviews with AI leaders
  • Get an overview of a research field
  • Find relevant papers faster
  • Identify key concepts in the literature
  • Embed discovery tools in library systems
  • Getting a visual overview of a new academic field
  • Ensuring no key papers are missed in a field with a large volume of new publications
  • Creating a bibliography for a thesis
  • Discovering relevant prior and derivative works
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