Epsilon
verifiedFreemiumepsilon-ai.com
AI research search engine summarizing 200M+ papers with citations; site announces shutdown on April 30, 2026.
What it does
Epsilon is an AI-powered search engine for scientific research that scans over 200 million academic papers (via Semantic Scholar) and returns cited, ChatGPT-style answers. It supports publication and patent search, cross-paper information extraction, and library summarization. The site states the service will shut down on April 30, 2026.
Core features
Cited AI answers over 200M+ papers
Publication and patent search
Cross-paper information extraction
Personal library with paper summaries
Semantic Scholar dataset with GPT-4 summaries
Best for
→Run literature reviews and meta-analyses
→Find evidence and citations for claims
→Search publications and patents
→Summarize and synthesize saved papers