SpecialistCovers general web sources alongside academic papers, but lacks specialized scientific synthesis metrics and consensus ratings.
#1Consensus records 6,014,388 monthly visits with -1.2% month-over-month growth and Freemium pricing. Lettria records 5,327 monthly visits with -12.8% growth and Contact for Pricing pricing.

Graph context layer that turns unstructured enterprise knowledge into traceable AI answers
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | consensus.app | lettria.com |
| Pricing Model | Freemium | Contact for Pricing |
| Monthly Visits | 6.01M (6,014,388) | 5.33K (5,327) |
| MoM Traffic Delta |
| -71.39K (-1.2%) |
| -783 (-12.8%) |
| Primary Market & Share | 🇺🇸 United States (12.8%) | 🇺🇸 United States (54%) |
|---|
| Direct Visits / mo | 2.92M | 2.09K |
|---|
| User Rating | 4.7 | 4.4 |
|---|
| 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.

Graph context layer that turns unstructured enterprise knowledge into traceable AI answers
Auto-generate production-grade, version-controlled ontologies from domain data instead of hand-modelling them over months.
Convert messy documents, tables and exports into a clean, queryable knowledge graph that unifies structured and unstructured sources.
Multi-hop reasoning across connected knowledge with full provenance on every answer, designed for auditability.
A graph-native document intelligence workspace for regulated industries, focused on accuracy, compliance and traceability.
SpecialistCovers general web sources alongside academic papers, but lacks specialized scientific synthesis metrics and consensus ratings.
#1
Free / Open-sourceCompletely free access to a massive scholarly index, but offers less automated natural-language evidence synthesis than Consensus.


SpecialistA paid, ad-free search engine that answers to its users
#3
Provides deeper PDF reading and interactive literature analysis tools, but is less focused on quick evidence aggregation.
Domain-specific AI for law firms, in-house legal teams, and professional services
Performs advanced systematic review data extraction and evidence synthesis, but has a more complex interface than Consensus.
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
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.
SpecialistVisualizes research connections through interactive graphs for literature discovery, but does not provide direct Q&A synthesis.

Free / Open-sourceTurn any document into AI-ready context with agentic parsing and extraction

SpecialistCovers general web sources alongside academic papers, but lacks specialized scientific synthesis metrics and consensus ratings.
Free / Open-sourceCompletely free access to a massive scholarly index, but offers less automated natural-language evidence synthesis than Consensus.
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.
Domain-specific AI for law firms, in-house legal teams, and professional services
Performs advanced systematic review data extraction and evidence synthesis, but has a more complex interface than Consensus.
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
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.
SpecialistVisualizes research connections through interactive graphs for literature discovery, but does not provide direct Q&A synthesis.
Free / Open-sourceTurn any document into AI-ready context with agentic parsing and extraction