Raw Day Inside Silicon Valley AI Startup

Everyone’s using AI to build software. These founders are using it to rebuild the physical world. In this episode, I spend the day inside Unlimited, a Silicon Valley startup building AI tools to redesign how projects like data centres, power plants, and industrial facilities get engineered and constructed. In 2025, Unlimited raised a $12M seed round led by Andreessen Horowitz and CIV. Unlimited was co-founded by Tara Viswanathan, who sold her previously company, Rupa Health, for a nine-figure sum. She’s now building Unlimited alongside her husband Alex, and their co-founder Jordan, who was also part of the founding team at Rupa. Just two weeks before raising Unlimited's seed round, Tara and Alex welcomed their first child. Unlimited operates in one of the most deeply traditional industries in the world, where timelines are long, skepticism is high, and execution matters. As they build the company, the team is managing hiring, contracts, product development, and early customer traction. Inside this episode: Why construction has become slower and more expensive over time How Unlimited is using AI to compress engineering timelines from months to days The challenge of selling into legacy industries with long sales cycles The tension between speed and perfection when building early What it takes to build a first-of-its-kind product in a skeptical market This episode is a rare look at founders working on one of the hardest problems in the real world, and what it actually looks like day-to-day.