Founded by Xiao Hong through his AI company Butterfly Effect, Manus was created to help people complete complex tasks faster with intelligent AI tools. Its AI PDF Summarizer lets you upload research papers, contracts, reports, and other PDF files, then quickly turns them into clear, customized summaries in bullet points or paragraphs while highlighting the most important insights. Users like that it understands the full document instead of simply extracting random sentences, making it useful for students, researchers, professionals, and legal teams. Manus offers a free plan to get started, while paid plans begin at $20/month, with higher tiers available for heavier usage and teams.