Definition
PMF (product-market fit)
Evidence that a real market wants what you built. Jack's point: AI now lets you find out in weeks instead of after a year of prototyping.
From the episode “Why Your AI-Designed Brand Is Invisible, and the 3-Step Fix”How founders on the podcast use it
The point where the market pulls your product out of you.
What it do!? The 90% Rule: Why Finishing Is the Least Fun Part of Building AnythingThe point where a product satisfies strong market demand.
Agent Memory Is the Next Great MoatThe point at which a product satisfies strong market demand. Bob distinguishes "conviction in product" (pre-seed graduation) from full PMF (later).
The Searchable Life: When Memories Get a DatabaseHear it on the podcast4 episodes
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Related terms in Startups & Fundraising
PBC, Public Benefit CorporationA for-profit structure with a legally stated public mission. Althea's form.PE backedPrivate equity backed. Ownership sits with a fund rather than founders or venture investors, which typically changes the reporting cadence and the exit clock.Permanent capitalA holding structure with no forced exit clock, unlike PE funds with three to five year hold periods.PivotA fundamental change in a startup's product or target user.Pre-Digital MarketAn industry that has not meaningfully adopted digital tools or workflows beyond basic email and websites. Tax preparation for individuals is characterized as pre-digital — not just pre-AI. The significance: pre-digital markets require less displacement of existing technology (there is little to displace) and more replacement of human-bottlenecked processes. Disruption requires less technical competition and more behavioral change.Pre-MVP Concept ValidationTesting a product concept before building an MVP: a landing page, a waitlist, a single-function prototype, or direct customer interviews. The goal is to confirm the problem is real and users want to interact with it the way you imagine — before committing engineering resources. Most founders skip this and build the wrong thing at full cost. The example: ask users how they'd log in before building auth. If everyone says Google and Facebook and you build Telegram, you've wasted the sprint on a feature nobody needed.Pre-PMF StageThe phase between having an MVP and achieving product-market fit. Characterized by high uncertainty about what to build, active customer discovery, and rapid iteration. During this phase, technical excellence is explicitly not needed — what matters is the fastest path to understanding what customers will pull and pay for. The founder's four jobs at this stage: marketing, sales, customer conversations, and fundraising. Everything else is delegated.Pre-seedThe earliest outside funding round, often from angels.