ChatPDF vs Explainpaper

Side-by-side comparison of ChatPDF and Explainpaper: pricing, features, API access, and community ratings.

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	ChatPDF Chat with any PDF using AI — summarize, ask questions, and extract insights instantly Visit	Explainpaper Read research papers 10x faster with AI-powered explanations and insights Visit
Category	Chat assistants	Chat assistants
Pricing	Freemium	Freemium
Starting price		USD 16/mo
Free tier
Audience	All audiences	All audiences
API available
Open source
Self-hostable
Model provider	OpenAI (GPT-4o / GPT-4o-mini dynamic routing)	OpenAI (LLM-based, unspecified)
Founded		2022
Headquarters
Key strengths	·Purpose-built PDF chat with side-by-side document view ·Cited sources linked directly to PDF page references ·Multi-file chat across folders of documents ·Fully multilingual — upload and chat in any language	·Highlight-to-explain: instant in-context explanations of confusing text ·Chat with the paper for accurate, citation-backed Q&A ·Auto-generated outlines, key points, and concept relationships ·Supports 50+ languages for explanations