#130 — The founder's guide to evals
Most obsess over prompts and LLM choices, but real product differentiation comes from rigorous, actionable evaluation.
#126 — How to do linear regression and correlation analysis
Many founders struggle to quickly spot what drives user retention and predict outcomes from product changes.
#115 — Code Mode: Your MCP Doesn’t Need 30 Tools
Today, most AI agents still fumble with "tool call". They're slow, brittle & embarrassingly limited. Code Mode offers a better way.
#112 — A formula for building effective AI agents
As AI capabilities explode, founders are rushing to build agents for everything. That's a mistake.
#105 — The founder's guide to fine-tuning LLMs with Unsloth
Fine-tuning an LLM customizes its behavior, enhances + injects knowledge, and optimizes performance for domains/specific tasks.
#96 — Mastra AI Framework (Updated 2026)
Prototype and productionize AI features with a modern TS stack so you can focus on shipping AI features, not boilerplate.
#79 — Open-source LLM models vs. closed-source LLM models
Open-source AI models are crushing closed-source competitors on cost and performance for everyday business tasks.
#78 — Prompt engineering for programmers
AI coding assistants are essential for startup speed – but founders need to invest in learning how to prompt them effectively.
#77 — What is (and isn't) Jobs to be Done?
As Jobs to be Done has exploded in popularity, two main – and incompatible – interpretations have emerged.
#55 — Finding B2B product-market fit (Part II)
B2B PMF is a survival game. Master its 5 levels—from problem validation to paying customers.
#54 — Structuring B2B Marketplaces
Choosing your B2B marketplace structure—internal unit, spinoff, or startup—is a critical early decision impacting everything.
#44 — How "Reverse RAG" eliminates healthcare hallucinations
Mayo Clinic's innovative "Reverse RAG" approach nearly eliminates AI hallucinations in healthcare.
#36 — 4 principles for building truly useful AI products
As AI models evolve at breakneck speed, founders need a new playbook.
#22 — Effective survey design for startups
Write surveys that engage users, boost your brand, and deliver insights.
#20 — 7 Powers
What's your moat? Hamilton Helmer's framework identifies 7 strategic advantages that create enduring business value.
#19 — Finding B2B product-market fit through the 5 P's
Most B2B startups fail to find product-market fit, but a framework of 5 P's can dramatically increase success rates.
#4 — Prompting engineering: The Basics
Five evidence-backed prompt engineering techniques that deliver 80% of the value at 20% of the effort for AI-powered startups.
#2 — Unlock customer insights with Jobs To Be Done
JTBD helps founders understand why customers really buy products, leading to better product decisions.