Credit: Megan Ellis / Android Authority
TL;DR
- NotebookLM has removed its biggest bottleneck, boosting custom chat prompts from 500 to 10,000 characters.
- Users can now define detailed personas, tones, rules, and context without fighting the character limit.
For anyone who’s been using NotebookLM to digest massive PDFs or brainstorm via the Audio Overview feature, you probably ran into a big limitation: the chat customization field. Until now, if you wanted to tell Google’s research tool how to talk to you, you were boxed into a meager 500 characters.
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