Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
#1Lune records 6,340 monthly visits with -28% month-over-month growth and Freemium pricing. Paper Digest records 97,202 monthly visits with -7.1% growth and Freemium pricing.

Evidence-grounded literature search for AI research agents
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | luneresearch.com | paperdigest.org |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 6.34K (6,340) | 97.2K (97,202) |
| MoM Traffic Delta |
| -2.47K (-28%) |
| -7.42K (-7.1%) |
| Primary Market & Share | 🇺🇸 United States (81.6%) | 🇺🇸 United States (31.4%) |
|---|
| Direct Visits / mo | 941 | 25.79K |
|---|
| User Rating | 4.3 | 4.5 |
|---|
| Supported Platforms | Website | Website |
|---|

Evidence-grounded literature search for AI research agents
Ask in plain language and Lune searches the full text of papers from top-tier venues all at once, rather than matching keywords against titles and abstracts.
See what a paper builds on and what later work builds on it, so you can place a result in its research lineage instead of treating it as an isolated claim.
Lune connects to Claude, ChatGPT and other MCP-capable clients, so your agent can pull real paper text and best-practice guidance mid-task.
Battle-tested guidance on novelty checks, baselines, ablations and reviewer expectations is surfaced at the moment it is relevant, not buried in a wiki.
AI-powered platform to read, write, and stay current with research
Reviews the most influential work around a topic and attaches citations to generated sentences, with many literature review examples available.
Free daily digests of arXiv, PubMed, bioRxiv and clinical trials, sorted by potential impact and delivered by area or keyword.
Read PDF articles with instant answers, and write, edit, cite and explain articles with a few clicks.
Generate domain-specific research reports and verify academic claims against supporting evidence.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
#1
A free, AI-powered academic search engine for 240M+ papers across every scientific field


AI academic search engine for peer-reviewed science
#3
AI research platform for reading, understanding and writing scientific papers
AI research assistant for evidence-based literature review and synthesis
The AI workspace where researchers read, write, and cite with every claim traceable to its source
AI answers grounded in 300M+ scholarly full texts

Map the literature around the papers you love—free
Explore the academic literature as a visual graph of related papers
AI-native workspace for literature reviews and auditable systematic reviews

Turn research papers and articles into interactive summary flashcards

Screen thousands of papers down to the studies that matter
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
AI research platform for reading, understanding and writing scientific papers
The AI workspace where researchers read, write, and cite with every claim traceable to its source
AI answers grounded in 300M+ scholarly full texts
Map the literature around the papers you love—free
Explore the academic literature as a visual graph of related papers
AI-native workspace for literature reviews and auditable systematic reviews
Turn research papers and articles into interactive summary flashcards
Screen thousands of papers down to the studies that matter