Build AI Yourself and Moat Checker
This tool gives you a concrete, step-by-step plan for building your AI project — whether that means using AI directly, building a product on top of it, fine-tuning a model, or training one from scratch. If you're building a product on AI, it also checks whether your idea can survive a foundation model shipping the same feature natively, using the same test that separates lasting products like Cursor and Harvey from stalled ones like Jasper.

How to use it:
Answer one question about what you're actually trying to build.
See which of the five building levels your project falls into, with real companies at that level and concrete next steps.
If you're building a product on AI, answer three more questions to see whether it's a defensible business or an easy-to-replace wrapper.