Semantic Scholar
Allen AI's free academic search engine that uses AI to find relevant papers, surface key citations, and identify influential research. Features TLDR summaries and semantic search across 200M+ papers.
Key Features
- AI-powered paper search
- TLDR paper summaries
- Citation graph analysis
- Influential citation detection
- Research alerts and feeds
Pros
- + Completely free
- + Excellent citation analysis
- + TLDR summaries save time
Cons
- − Limited to academic papers
- − Some papers missing full text
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