Locus records 615 monthly visits with -85.1% month-over-month growth and Freemium, Free Trial pricing. Semantic Scholar records 8,198,672 monthly visits with +5.8% growth and Free pricing.
Ctrl+F, reimagined with AI for web pages and PDFs
A free, AI-powered academic search engine for 240M+ papers across every scientific field
| Dimension / Metric | | |
|---|---|---|
| Official Domain | locusextension.com | semanticscholar.org |
| Pricing Model | Freemium, Free Trial | Free |
| Monthly Visits | 615 (615) | 8.2M (8,198,672) |
| MoM Traffic Delta | -3.51K (-85.1%) | +450.65K (+5.8%) |
| Primary Market & Share | 🇺🇸 United States (100%) | 🇺🇸 United States (22.9%) |
| Direct Visits / mo | 239 | 1.88M |
| User Rating | 4.1 | 4.8 |
| Supported Platforms | Website | Website |
Ctrl+F, reimagined with AI for web pages and PDFs
Use everyday language to find the exact section you need on any web page or PDF, catching matches that exact keyword search cannot.
Summarize entire pages or selected portions to save time and get the key takeaway quickly.
Locus AI helpers brainstorm research topics, suggest further reading, and generate note cards to help you retain information.
Choose from current models including OpenAI GPT-4o-family options, Anthropic Claude, and Google Gemini, with new releases added within days.
A free, AI-powered academic search engine for 240M+ papers across every scientific field
Search 241 million-plus publications from every scientific field using natural-language queries that match meaning rather than exact keywords.
Each indexed paper gets a one-sentence machine-generated TLDR so you can triage results before committing to reading the full text.
An augmented PDF reader that highlights citations, definitions, equations and figures inline, and shows which later papers cited the passage you are reading.
See how a paper was cited, whether citations were influential, and which references shaped the work — useful for literature reviews and citation chasing.
SpecialistBroader real-time web search capabilities with academic filters, but less specialized for deep bibliographic citation analysis than Semantic Scholar.
SpecialistBroader real-time web search capabilities with academic filters, but less specialized for deep bibliographic citation analysis than Semantic Scholar.
Synthesizes direct evidence-based answers from scientific papers, but has a less comprehensive raw database than Semantic Scholar.
Synthesizes direct evidence-based answers from scientific papers, but has a less comprehensive raw database than Semantic Scholar.
All-in-one AI assistant across web, browser, desktop and mobile
All-in-one AI assistant across web, browser, desktop and mobile
Offers an immersive AI reading and PDF analysis workspace, but is less focused on pure bibliographic search.
Offers an immersive AI reading and PDF analysis workspace, but is less focused on pure bibliographic search.
AI sidebar and browser agent for reading, writing and research
AI sidebar and browser agent for reading, writing and research
Excels at automated systematic review data extraction and evidence synthesis, but indexes a narrower slice of literature.
Excels at automated systematic review data extraction and evidence synthesis, but indexes a narrower slice of literature.
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
Chat with any PDF, video, or website and get cited answers in seconds
Highlight the web, learn in public, and build your AI clone
Highlight the web, learn in public, and build your AI clone
SpecialistProvides advanced Smart Citations showing how papers support or dispute each other, but has a smaller overall index.
SpecialistProvides advanced Smart Citations showing how papers support or dispute each other, but has a smaller overall index.
SpecialistFeatures excellent visual citation collections and literature tracking recommendations, but lacks inline paper summarization features.
SpecialistFeatures excellent visual citation collections and literature tracking recommendations, but lacks inline paper summarization features.
SpecialistOffers superior visual graph mapping of academic paper connections, but lacks traditional keyword search and full-text reading tools.
SpecialistOffers superior visual graph mapping of academic paper connections, but lacks traditional keyword search and full-text reading tools.
