Semantic Scholar
by Allen Institute for AI
AI-powered academic paper discovery
Pricing
Free
Difficulty
intermediate
Time to Start
5 min
Privacy
high
Free Tier
Completely free; unlimited search; TLDR summaries; API access; citation data
Limits: API: 1 request/second default; authenticated: higher; web: unlimited
When to upgrade: N/A (fully free); API rate limit increases for institutional use
Use Cases
Paper discovery; citation analysis; AI-generated TLDRs; literature search; bibliography building
Technical Details
Ideal For
Supported Content
Output Formats
Alternatives
Elicit
by Elicit (Ought)
AI research assistant for systematic literature review
Free: Free: 5,000 paper results; basic extraction; limited concept maps
Consensus
by Consensus
AI search engine for evidence-based scientific answers
Free: Free: unlimited searches; AI-synthesized answers; basic paper results
SciSpace
by SciSpace (Typeset)
AI paper reading, literature review, and writing
Free: Free: limited paper reads; basic Q&A; limited highlights; Copilot queries
Connected Papers
by Connected Papers
Visual citation network graphs for paper discovery
Free: Free: 5 graphs/month; visual citation exploration; basic features