The a16z Show · Tuesday, September 29, 2026
The most successful AI agents are those that function invisibly as 'cost savers,' rather than just offering marginal efficiency gains. Examples include automatically filing reimbursements, securing flight credits when prices drop, and optimizing home sprinkler systems to reduce water bills.
“And the best most proactive use case I'm seeing, I think do fall in the finance category. And I think we're going to see an explosion in a world though where it's not cost makers, it's cost savers.”
“like some cool use cases I saw, people are using it to go through their past receipts and file HSA reimbursements.”
“He hooked up his Grokbot to his sprinkler system at his home. And connected it to the weather system. And so now his sprinklers are dependent on the weather. And it's dropped his water bill by 50%.”