Semantic Scholar records 8,198,672 monthly visits with +5.8% month-over-month growth and Free pricing. Speechify records 5,457,475 monthly visits with +0.5% growth and Freemium pricing.
A free, AI-powered academic search engine for 240M+ papers across every scientific field
Text to speech and voice AI across every device
| Dimension / Metric | | |
|---|---|---|
| Official Domain | semanticscholar.org | speechify.com |
| Pricing Model | Free | Freemium |
| Monthly Visits | 8.2M (8,198,672) | 5.46M (5,457,475) |
| MoM Traffic Delta | +450.65K (+5.8%) | +24.71K (+0.5%) |
| Primary Market & Share | 🇺🇸 United States (22.9%) | 🇺🇸 United States (55.2%) |
| Direct Visits / mo | 1.88M | 2.84M |
| User Rating | 4.8 | 4.3 |
| Supported Platforms | Website | Website |
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.
Text to speech and voice AI across every device
Listen to books, PDFs, documents and web pages read aloud in a large library of lifelike AI voices.
Dictate instead of typing in almost any app, across Google Docs, Gmail, Slack, Outlook and more.
Turn documents or a short prompt into an AI podcast, and get instant summaries of what you are reading.
Use the web app, Chrome and Edge extensions, and native iOS, Android, Mac and Windows apps.
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.
SpecialistDelivers significantly superior voice realism and cloning quality, but lacks Speechify's dedicated document library reader interface.
SpecialistDelivers significantly superior voice realism and cloning quality, but lacks Speechify's dedicated document library reader interface.
Free / Open-sourceProvides powerful open-source speech synthesis and voice cloning, but requires technical setup compared to turnkey apps.
Free / Open-sourceProvides powerful open-source speech synthesis and voice cloning, but requires technical setup compared to turnkey apps.
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.
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.
Offers a very similar document-reading experience and browser extension for listening to PDFs, but with fewer advanced voice cloning suites.
Offers a very similar document-reading experience and browser extension for listening to PDFs, but with fewer advanced voice cloning suites.
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.
Free / Open-sourceProvides free text-to-speech conversion across many languages, but lacks advanced reading assistant and document management features.
Free / Open-sourceProvides free text-to-speech conversion across many languages, but lacks advanced reading assistant and document management features.
SpecialistSpecializes in real-time voice changing and cloning, but lacks Speechify's robust ebook and document reading workflow.
SpecialistSpecializes in real-time voice changing and cloning, but lacks Speechify's robust ebook and document reading workflow.
Converts text, documents, and web pages into natural audio via browser tools, but lacks Speechify's polished mobile apps.
Converts text, documents, and web pages into natural audio via browser tools, but lacks Speechify's polished mobile apps.
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.
