AI chatbot for conversation, work, research, coding, and content creation.
5.9B visits/mo+5%#1 Chatbots & Assistants
$9/mStarting price
7.4KMonthly visits
15Popularity
About Epsilon
Epsilon is an AI search engine for academic research. For every search, Epsilon will find the top 100 relevant papers, read through them, and provide an AI generated summary with references to the literature. This makes for a great aid when writing research papers, proposals, or grants. The tool also offers the ability to save and organize papers, run comprehensive topic analyses, and share insights with others. With Epsilon, students and researchers can produce high quality research in less time. It’s free to use up to 25 searches and is $9/month afterwards for students and $19/month for professionals.
Key features
- AI search engine for academic research
- Generates AI summaries with references to literature
- Saves and organizes papers
- Runs comprehensive topic analyses
- Shares insights with others
- Free up to 25 searches
- Student discount available
Use cases
- Writing a research paper
- Conducting a literature review
- Refining a research question
Pros
- Generates AI summaries with inline citations from over 200 million academic papers
- Supports saving, organizing, and searching across personal libraries of papers
- Enables validation of claims by extracting information from multiple papers simultaneously
- Provides structured results grouped into latest research, key texts, and most relevant articles
- Offers a ChatGPT-like interface tailored for academic research with factual grounding
Cons
- Scheduled to shut down on April 30, 2026
- Relies on third-party infrastructure providers, raising potential privacy considerations
Frequently asked questions about Epsilon
What is Epsilon and what does it do?
Epsilon is an AI-powered search engine designed for academic research. It scans over 200 million academic papers to find evidence relevant to a user's research question, then generates a summarized answer with inline citations to the source material.
Who is Epsilon suitable for?
Epsilon is used by researchers, students, academics, and professionals across various fields such as science, technology, medicine, and social sciences to assist with literature reviews, grant writing, meta-analyses, and more.
How does Epsilon generate its answers?
For each search query, Epsilon identifies the top 100 relevant papers and uses GPT-4 to generate a concise summary of the scientific information, ensuring the output includes citations to the underlying academic literature.
Can Epsilon help with patent searches?
Yes, Epsilon allows users to search for both publications and patents, grouping results into categories such as latest research, key texts, and most relevant articles.
How does Epsilon handle user privacy?
Epsilon passes search queries to third-party infrastructure providers like OpenAI, but ensures that none of the data can be traced back to individual users. The same privacy protection applies to papers added to a user's library.
What will happen to Epsilon after April 30, 2026?
Epsilon will shut down permanently on April 30, 2026, and will no longer be available for use after that date.
Epsilon traffic & engagement
epsilon-ai.com · third-party estimates from Similarweb
Data as of Sep 2026Full AI website ranking →
Monthly visits · Sep 20267.4K+23.9% MoM12-month high 25K (Jun 2026)
Rank among AI websites#4,816▲ 261 vs last monthof 8,652 tools on aitoolnavio™
Top marketUnited States35.2%Top 5 countries bring 100% of visits
Average visit4sTime on site per visit
Pages per visit1.45Average pages viewed
Bounce rate34%Lower than 86% of AI sites
Similarweb global rank#2,820,392#372,205 in India
Traffic trend
Last 4 months · grows by one month every month
- Jun 202625K
- Jul 20268.9K−64.6%
- Aug 20266K−32.3%
- Sep 20267.4K+23.9%
Top countries
Share of visits · estimated visits
Compared with similar tools
Chatbots & Assistants · Sep 2026
Traffic figures are third-party estimates, good for scale and trends; they can differ from a company's own numbers. Updated monthly.
