> Neeva is 100% ad-free and never sells or shares members' data with any third party. Neeva's Free Basic membership is completely free and full-featured, allowing members to search both the web and connected personal accounts like Gmail or Dropbox (subject to certain usage limits), set news and shopping preferences, and search from multiple devices.
> To earn money, Neeva offers a Premium membership tier where some members choose to pay a monthly fee and receive best-in-class privacy-protecting tools, as well as other exclusive insider benefits.
https://help.neeva.com/hc/en-us/articles/1500011532921-How-d...
Looks like the $$$ they get from premium subscriptions finances their 'free' offering, but as with all services with this model I am skeptical of anything 'free' since it could be powering their AI and later down the line that will be potentially abused or weaponized.