Locus records 615 monthly visits with -85.1% month-over-month growth and Freemium, Free Trial pricing. SciSpace records 4,464,111 monthly visits with +8.6% growth and Freemium pricing.
Ctrl+F, reimagined with AI for web pages and PDFs
AI research platform for reading, understanding and writing scientific papers
| Dimension / Metric | | |
|---|---|---|
| Official Domain | locusextension.com | scispace.com |
| Pricing Model | Freemium, Free Trial | Freemium |
| Monthly Visits | 615 (615) | 4.46M (4,464,111) |
| MoM Traffic Delta | -3.51K (-85.1%) | +355.38K (+8.6%) |
| Primary Market & Share | 🇺🇸 United States (100%) | 🇺🇸 United States (13.2%) |
| Direct Visits / mo | 239 | 1.32M |
| User Rating | 4.1 | 4.6 |
| 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.
AI research platform for reading, understanding and writing scientific papers
Open or upload a paper and ask questions, get plain-language explanations of highlighted passages, and pull out methods, results and limitations conversationally.
Search a large scholarly index spanning Google Scholar, PubMed and arXiv, then generate structured literature reviews and related-work sections from what you find.
An AI Writer for drafts, a paraphraser for academic tone, and a citation generator that formats references in popular styles.
Turn tables and results in a paper into structured data, and check whether a manuscript reads as AI-generated with a built-in detector.
SpecialistOffers broad general reasoning and document upload capabilities, but lacks specialized academic indexing and citation databases.
SpecialistOffers broad general reasoning and document upload capabilities, but lacks specialized academic indexing and citation databases.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Free / Open-sourceProvides a massive free index of scholarly literature with citation graphs, but lacks built-in interactive paper reading assistants.
Free / Open-sourceProvides a massive free index of scholarly literature with citation graphs, but lacks built-in interactive paper reading assistants.
Provides evidence-based answers extracted directly from peer-reviewed papers, though less of an all-in-one reading workspace.
Provides evidence-based answers extracted directly from peer-reviewed papers, though less of an all-in-one reading workspace.
All-in-one AI assistant across web, browser, desktop and mobile
All-in-one AI assistant across web, browser, desktop and mobile
AI sidebar and browser agent for reading, writing and research
AI sidebar and browser agent for reading, writing and research
Stronger automated data extraction and systematic review synthesis, but less focused on interactive PDF annotation than SciSpace.
Stronger automated data extraction and systematic review synthesis, but less focused on interactive PDF annotation than SciSpace.
SpecialistFocuses heavily on assisted academic drafting and autocomplete, whereas SciSpace centers more on reading and analysis.
SpecialistFocuses heavily on assisted academic drafting and autocomplete, whereas SciSpace centers more on reading and analysis.
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
Excels at tracking citation contexts and how papers cite each other, but has less robust general PDF chat features.
Excels at tracking citation contexts and how papers cite each other, but has less robust general PDF chat features.
