Tech start-ups typically raised huge sums to hire armies of workers and grow fast. Now artificial intelligence tools are making workers more productive and spurring tales of “tiny team” success.

Almost every day, Grant Lee, a Silicon Valley entrepreneur, hears from investors who try to persuade him to take their money. Some have even sent him and his co-founders personalized gift baskets.

Mr. Lee, 41, would normally be flattered. In the past, a fast-growing start-up like Gamma, the artificial intelligence start-up he helped establish in 2020, would have constantly looked out for more funding.

But like many young start-ups in Silicon Valley today, Gamma is pursuing a different strategy. It is using artificial intelligence tools to increase its employees’ productivity in everything from customer service and marketing to coding and customer research.

That means Gamma, which makes software that lets people create presentations and websites, has no need for more cash, Mr. Lee said.

Keep reading this article on The New York Times Small Business.