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Fathom Layer

Versus Engine

Microsoft 365 Copilot vs NotebookLM

Specs, price and the one trade-off that actually decides it — Microsoft 365 Copilot against NotebookLM, side by side.

Cheaper to start

Tie

Both start at a similar price.

Best ecosystem

NotebookLM

2 native integrations vs 0.

Standout

Microsoft 365 Copilot

Deep integration into daily enterprise workflows

Microsoft 365 Copilot

A $30/user add-on that lives inside Teams, Outlook and PowerPoint. Strong at summarising threads and meetings; still finicky in Excel.

Where it wins, where it doesn't

Pros

  • Deep integration into daily enterprise workflows
  • Excellent at summarizing Teams meetings and email threads
  • Generates PPT drafts instantly

Cons

  • Very expensive per-user add-on
  • Excel integration is still finicky with complex models
  • Can hallucinate internal data if not scoped properly
NotebookLM

NotebookLM

Google's personalized AI research assistant. Upload your PDFs, Google Docs, and web links, and NotebookLM becomes an expert on your specific source material. Famous for its 'Audio Overview' feature that turns documents into a realistic podcast.