Manus vs NotebookLM: which one to choose in 2026?

Manus is a general-purpose autonomous AI agent developed by Butterfly Effect, a Singapore-based company. It carries out complex tasks end to end in the cloud: in-depth research, building websites, presentations and documents, data analysis and web automation. You describe a goal; the agent plans the steps, takes action and delivers a finished result. Its ability to keep working on its own in the background, even after you close your session, sets it apart from traditional chatbots.

NotebookLM, Google's research assistant, reasons exclusively over the documents you feed it: PDFs, websites, YouTube videos or personal notes. It turns them into reliable, cited summaries and can even transform your sources into an audio podcast where two voices discuss the content — a feature that has achieved cult status. Powered by Gemini 3, it also generates video overviews and Deep Research reports.