Consensus records 6,014,388 monthly visits with -1.2% month-over-month growth and Freemium pricing. Three Sigma records 416 monthly visits with -79.2% growth and Free Trial, Paid pricing.
AI academic search engine for peer-reviewed science
AI document research that shows you exactly how it found each answer
| Dimension / Metric | | |
|---|---|---|
| Official Domain | consensus.app | threesigma.ai |
| Pricing Model | Freemium | Free Trial, Paid |
| Monthly Visits | 6.01M (6,014,388) | 416 (416) |
| MoM Traffic Delta | -71.39K (-1.2%) | -1.58K (-79.2%) |
| Primary Market & Share | 🇺🇸 United States (12.8%) | 🇺🇸 United States (100%) |
| Direct Visits / mo | 2.92M | 163 |
| User Rating | 4.7 | 4.3 |
| Supported Platforms | Website | Website |
AI academic search engine for peer-reviewed science
Ask a research question in plain language and get answers synthesized from peer-reviewed studies, with each claim linked to its source paper.
A visual summary shows how the scientific literature leans on a yes/no question, indicating agreement, disagreement or mixed evidence.
Narrow results by study design, sample size, journal quality, publication year and more to prioritize high-quality evidence.
Aggregate findings across many studies into structured summaries that map what is known and where the gaps are.
AI document research that shows you exactly how it found each answer
Point the tool at a folder of files and ask questions across the whole set at once, rather than opening documents one by one.
Whenever it answers, Three Sigma shows you how it reached the answer, so results are verifiable rather than a black box.
Access Three Sigma through a plugin from within an existing ChatGPT account on every plan.
No document on hand? A free solo mode works like a normal chat assistant.
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.
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
SpecialistA paid, ad-free search engine that answers to its users
SpecialistA paid, ad-free search engine that answers to its users
Provides deeper PDF reading and interactive literature analysis tools, but is less focused on quick evidence aggregation.
Provides deeper PDF reading and interactive literature analysis tools, but is less focused on quick evidence aggregation.
AI research assistant for evidence-based literature review and synthesis
SpecialistThe AI workspace where researchers read, write, and cite with every claim traceable to its source
SpecialistThe AI workspace where researchers read, write, and cite with every claim traceable to its source
SpecialistAI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
SpecialistAI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
Chat with any PDF, video, or website and get cited answers in seconds
Tracks how papers are cited with Smart Citations to gauge reliability, but features a less direct Q&A synthesis.
Tracks how papers are cited with Smart Citations to gauge reliability, but features a less direct Q&A synthesis.
SpecialistExcellent for visual citation mapping and literature discovery, but lacks automated paper Q&A and evidence synthesis.
SpecialistExcellent for visual citation mapping and literature discovery, but lacks automated paper Q&A and evidence synthesis.
A free AI answer engine that cites its sources
A free AI answer engine that cites its sources
SpecialistVisualizes research connections through interactive graphs for literature discovery, but does not provide direct Q&A synthesis.
SpecialistVisualizes research connections through interactive graphs for literature discovery, but does not provide direct Q&A synthesis.
