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Practical AI guides for founders

Short, useful reads on growing your startup with AI, safely. From the team behind AI Operating System for Startups. See also AI startups from Y Combinator.

A founder at a workbench studying one deep channel cut through a single industry workflow next to a row of shallow horizontal lanes

July 30, 2026 · 15 min read

Vertical SaaS: The Legora $100M ARR Playbook

Vertical SaaS used to be the conservative choice: smaller market, lower ceiling. AI inverted that. When the cost of building generic software collapses, the part that does not collapse is knowing exactly how one industry works and having permission to touch its data. Legora went from $1M to $100M in ARR in 18 months selling into law firms, one of the least fashionable buyers in software. Here is the business model underneath that run: why bundling beat the point solutions, what actually defends a vertical against a foundation model lab, why one workflow travels across countries, and where the model still breaks.

A founder at a workbench watching a simulated room on a monitor resolve into a real robotic arm picking up an object

July 29, 2026 · 13 min read

Physical AI: What It Means for Founders

Robotics spent a decade as the field where nothing generalized. Then it started copying the language-model playbook: pretrain on the world, fine-tune on actions, let reinforcement learning close the gap. Nvidia's Jim Fan calls it the great parallel, and it changes what a founder is actually looking at. Here is what physical AI means in practice, why the constraint moved from models to data, what breaks when software can act on atoms, and the vertical playbook a small team can run without owning a fab.

A single founder tracing a live multi-tier chip supply chain map on a workbench while spreadsheets and paper purchase orders fall away behind them

July 28, 2026 · 13 min read

AI for Supply Chain: The Founder Opportunity

A single advanced AI chip crosses a dozen countries and takes months to build, and the people responsible for it are working from spreadsheets, SAP, and phone calls. Y Combinator put out a call for founders to build supply chain 2.0 for chips, and the reason it is a startup rather than a feature is specific: the buyer's real pain lives in the second and third supplier tiers, where the incumbent system of record has no data at all. Here is what AI for supply chain actually has to do, why the bottleneck moved to packaging and memory while the tooling stayed still, and the test for whether your version is a company.

A single founder writing a specification and acceptance criteria while AI agents implement, test, and iterate on the code behind them

July 26, 2026 · 13 min read

Spec-Driven Development for Startups

In spec-driven development the specification, plus the tests or scenarios that define success, is what humans write. Agents write the implementation and keep iterating until the spec is satisfied. A YC partner calls the result an AI software factory, and StrongDM has published how its AI team runs one under two rules: code must not be written by humans, and code must not be reviewed by humans. Here is what that actually takes, what it changes about your team, and where it still breaks.

A single engineer embedded at a customer site, laptop open beside the customer's own operations team, wiring an AI system into their live workflow

July 25, 2026 · 15 min read

Forward Deployed Engineer: A Founder's Guide

A forward deployed engineer sits inside your customer's operation and makes your product actually work there: mapping the real workflow, wiring into their systems, and tuning until the numbers move. Palantir made the role famous, and in 2026 nearly every serious enterprise AI company is hiring for it. The founder of a Y Combinator company running AI support agents for DoorDash calls this role the biggest bottleneck in every enterprise AI deployment. Here is what the job actually is, what it costs you per logo, when you need one, and which parts an agent can now absorb.

A single founder in a small home-services dispatch office orchestrating AI voice agents that answer phones and book jobs, service trucks visible outside

July 24, 2026 · 8 min read

AI for Field Service: The Founder Playbook

Field service is a phone business. Someone's air conditioning dies, they call three companies, and the first one that picks up and books the visit wins the job. The company that lets the call ring out just lost thousands of dollars. That simple economics is why AI voice agents have become one of the sharpest wedges in vertical AI, and why Avoca, a Y Combinator company building what it calls the AI workforce for the physical economy, is now valued at a billion dollars. Here is what AI for field service actually does, why the phone is the whole game, and the founder playbook you can copy whether you sell to these businesses or run one.