Summary
In this a16z podcast episode, hosts Joe Schmidt and Alex Rampell sit down with Keith Paris, CEO of Lightfield, a startup that recently raised a $47 million Series A led by a16z. Paris explains what a “business world model” is: a system that ingests a company’s emails, calls, and meetings and turns them into a structured record that AI agents can act on, positioning Lightfield as a next-generation alternative to CRM incumbents like Salesforce.
The conversation traces Paris’s unusual founder journey, from building an AI presentation tool that launched around the same time as ChatGPT and hit two million monthly users, to the difficult decision to abandon that product entirely because the underlying models lacked the context needed to make genuinely useful presentations. He describes how the team pivoted into enterprise software and spent months studying early customers before landing on the current product direction.
Much of the discussion focuses on the “greenfield versus brownfield” challenge facing AI-native enterprise tools: while new companies can build processes around AI from day one, established sales organizations often resist replacing familiar tools like Salesforce even when a better product exists. Paris shares concrete examples, including how Lightfield’s platform helped a marketplace user find frontier medical treatment for Alzheimer’s within days, illustrating the practical stakes of AI-driven business modeling.
📺 Source: a16z · Published September 16, 2026
🏷️ Format: Interview
