NotebookLM is the strongest fit for condensing meeting transcripts and documents into key points. It is purpose-built for ingesting documents and generating summaries, FAQs, and structured notes directly from the source material, and it is free with a Google account. Claude Sonnet is a strong alternative when you need more control over summary format or want to paste in longer transcripts with custom instructions. Gemini Flash works well if you want a free, fast option through the Gemini app with solid summarization quality. Perplexity is worth considering when the transcript or document touches on topics where pulling in external context alongside the summary adds value.