
A free, AI-powered academic search engine for 240M+ papers across every scientific field
A free, AI-powered academic search engine for 240M+ papers across every scientific field
Connected Papers records 750,576 monthly visits with +3.1% month-over-month growth and Freemium pricing. SOMA records 0 monthly visits with 0% growth and Freemium pricing.

Map the relationships hiding inside biomedical literature
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | connectedpapers.com | soma.science |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 750.58K (750,576) | 0 (0) |
| MoM Traffic Delta | +22.43K (+3.1%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (17.6%) | 🌐 Global (—) |
| Direct Visits / mo | 308.44K | 0 |
| User Rating | 4.7 | 4.2 |
| Supported Platforms | Website | Website |
Explore the academic literature as a visual graph of related papers
Each graph places the seed paper among its most closely related works, clustered by how often papers are cited together or share references.
Separate perspectives show what a paper builds on and what later work builds on it, which is ideal for tracing a research lineage.
Start from a paper title, DOI, URL or proceedings link, so you can enter the graph from whatever you already have at hand.
A ranked list view lets you browse related publications by relevance when you need specifics rather than an overview.

Map the relationships hiding inside biomedical literature
SOMA parses published studies and pulls out the factors, exposures and outcomes they discuss, so you can examine the evidence base without reading every paper in full first.
Extracted relationships are organized into a connected graph, letting you start from one condition or factor and follow the links outward to related variables.
Each relationship in the graph is tied back to the studies that reported it, so you can open the source paper and judge the evidence yourself.
Search across study relationships to see which factors have been investigated together and where findings cluster or conflict.

A free, AI-powered academic search engine for 240M+ papers across every scientific field
A free, AI-powered academic search engine for 240M+ papers across every scientific field

AI academic search engine for peer-reviewed science

AI research platform for reading, understanding and writing scientific papers
AI research platform for reading, understanding and writing scientific papers
AI research assistant for evidence-based literature review and synthesis
AI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
AI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
SpecialistTracks citation reliability and context via Smart Citations, but offers less visual graph-based exploration of literature.
SpecialistTracks citation reliability and context via Smart Citations, but offers less visual graph-based exploration of literature.

Map the literature around the papers you love—free
Map the literature around the papers you love—free
AI-native workspace for literature reviews and auditable systematic reviews
AI-native workspace for literature reviews and auditable systematic reviews

Helps discover and track academic papers and trends, but offers less robust visual citation graph mapping.
Helps discover and track academic papers and trends, but offers less robust visual citation graph mapping.
SpecialistDelivers structured paper summaries and literature reviews, but lacks interactive visual citation exploration tools.
SpecialistDelivers structured paper summaries and literature reviews, but lacks interactive visual citation exploration tools.

AI-powered visual discovery of scientific knowledge

AI text analysis with knowledge graphs to reveal topics and content gaps
AI text analysis with knowledge graphs to reveal topics and content gaps