After NotebookLM identifies the gaps, use its research feature to fill them.
In the recording, NotebookLM suggested starting Deep Research on the vendors. You can also trigger this manually from the source panel. Look for the research controls in the left column, choose Fast Research or Deep Research, and give it a focused research task.
For this demo, useful searches included:
Goodcall AI receptionist pricing features integrations
Smith.ai AI receptionist pricing human backup integrations
Slang.ai restaurant AI receptionist pricing OpenTable SevenRooms
Fast Research is better when you want a quick set of candidate sources. Deep Research can take longer, but it can return a richer set of sources. In the recording, Deep Research took a few minutes and returned a list of discovered sources that could be reviewed before import.
When the research finishes, do not import everything blindly. Review the source list. Select the sources that actually help the decision, deselect anything weak or repetitive, and then click import.
For a vendor decision, make sure you have sources like:
- official product pages
- pricing pages
- integration pages
- help center docs
- customer proof or case studies
- third-party comparisons or reviews
If NotebookLM misses something obvious, add it manually. In the recording, the important backup move was to make sure the vendors' pricing pages were included. The research feature is helpful, but you still need to use judgment.
Pro tip: For vendor or partnership decisions, manually check that pricing pages, integration pages, and support docs made it into the notebook. NotebookLM can find a lot of sources, but the boring operational pages are often what make the decision real.