Primitive Labs, a San Francisco startup that builds AI models of how people behave, said on October 5, 2026, that it has taken an investment from Sony Innovation Fund. The company did not say how much money was involved.
The announcement, issued through PR Newswire from San Francisco and Tokyo, says the money will keep its behavioral research going and fund work on Instinct, a platform aimed at enterprise customers. Everything below comes from the company’s own statement, so treat the claims as the company’s, not as independently tested results.
What Instinct is meant to do
Think of it as a rehearsal room for a product launch. A business feeds in its user research, product analytics and behavioral data, and Instinct builds simulated customer populations that move through a digital experience. Product, design and research teams can then look at how those simulated customers are likely to fare. The company says the aim is to spot where people abandon a funnel, and to compare how different audiences react, before a launch or a big product decision.
Behind that sits a research idea. Primitive Labs says it models how people form goals, change their beliefs and make decisions, and how, under uncertainty or time pressure, they either stick with an objective or give it up. The company says it wants AI systems to reason about human behavior instead of only guessing the next action.
It reports having generated hundreds of thousands of simulated behavioral trajectories across hundreds of customer populations and thousands of digital environments. That growing pile of data, it says, is used to train its models.
Customers and backers
Primitive Labs says it is working with partners in retail, e-commerce, media and entertainment, advertising, and gaming. The work centers on journeys such as onboarding, account creation, subscription and checkout, including how those need to change for different customer segments or new markets. Over the longer term the company sees openings in healthcare and life sciences, financial services, travel and marketplaces.
“The barrier to building software is dropping, but the expectations of users hasn’t changed,” said Rohit Talluri, the company’s CEO and co-founder.
Atsushi Kitagawa, Managing Director-US at Sony Ventures, said his team has been studying the customer journey as enterprises become more agentic. He called the company’s research-driven approach “compelling” and said it could help businesses anticipate how customers will respond to digital experiences.
Josh Lu, an investment partner at Andreessen Horowitz for a16z speedrun, said there is a real difference between asking AI to act like a person and building models of how people actually behave. The company belongs to the SR007 cohort of a16z speedrun, Andreessen Horowitz’s early-stage startup program. Its backers, per the announcement, also include Olive Tree Capital and Pack Ventures.
The founders
Primitive Labs was founded in 2026 and is headquartered in San Francisco. Talluri is CEO, Jean Farmer is CTO and Gabriel Fong is COO. The three first worked together at Amazon Web Services. Talluri later joined Amazon’s Artificial General Intelligence Autonomy Lab, where he supported computer-use agent projects, and Farmer worked in Amazon AGI and supported the Amazon Nova launches. The wider team, the company says, has professional and academic experience from Amazon, Google, Harvard, MIT and the University of Washington.
