Explainpaper
Highlight confusing text in an academic PDF and get an instant, plain-language AI explanation — turning dense papers into a guided, conversational read.
Alternatives
Overview
Explainpaper is an AI tool designed to make academic papers accessible to non-specialist readers, its core feature is the ability to highlight any passage in an uploaded PDF and receive an immediate plain-language explanation of what it means, including definitions of technical terms, simplification of mathematical notation, and context for specialized concepts. This lowers the barrier for understanding research outside your primary expertise: a product manager reading a machine learning paper can highlight a confusing methodology section and receive an explanation without a PhD-level background. Explainpaper supports multi-turn conversation about any section, ask for clarification, request more detail, or ask how a section connects to the paper's main argument. The tool maintains context about the full paper during the session, enabling questions that reference multiple sections.
Explainpaper's interface is minimalist and focused: PDF on the left, conversation on the right, no feature overhead beyond the core explanation function. The free tier provides a limited number of paper explanations per month. Premium plans at $12/month offer unlimited papers and priority processing. Explainpaper is most used by students, journalists, and curious professionals who want to engage meaningfully with academic research in fields adjacent to their expertise, where the explanation layer is the primary barrier between them and the research's value.
Key Features
- Highlight-to-explain interface
- Technical jargon breakdown
- Follow-up questions
- Paper library
- Multiple paper models
- • Incredibly simple interaction model
- • Great for students and non-experts
- • Works well on math-heavy papers
- • Fast explanations
- • Limited to individual papers
- • Less powerful than SciSpace overall
- • Free plan has usage limits
People Also Use
Other Research tools builders reach for alongside Explainpaper.
WolframAlpha
Get exact computed answers to math, science, and data questions instead of a list of links to sift through.
Gemini
Google's flagship model handles research, coding, long-document analysis, and multimodal tasks, and it's woven into every corner of Google Workspace.
Perplexity
Get direct answers to hard questions with sources you can verify. Search that thinks instead of just returning links.
ChatPDF
Drop in a PDF and immediately chat with it, getting cited, page-referenced answers instead of manually searching the document.
Google NotebookLM
Turn a pile of uploaded documents into a source-grounded research partner that answers questions, drafts reports, and generates audio/video overviews. Built on Gemini 3.
Readwise Reader
Pull articles, PDFs, tweets, and newsletters into one inbox, with AI summarizing and surfacing highlights — bundled with Readwise Highlights as a single subscription.