If you look at Google's Faculty Research Award page (https://ai.google/research/outreach/faculty-research-awards/ https://ai.google/research/outreach/faculty-re

If you look at Google's Faculty Research Award page (https://ai.google/research/outreach/faculty-research-awards/ https://ai.google/research/outreach/faculty-research-awards/), the awards are described as "unrestricted gifts." I'm not sure how it gets more flexible than that. Disclaimer: I work for Google.