I built this because when I was prepping for interviews I had lot's of separate material in different places I was referencing to study. I was bouncing between Claude/GPT sessions that would lose some context, Stanford lecture notes, exam questions I'd collected, and my own notes. None of the material really connected together much and it made it hard for some things to stick.

LiminalML goes through 157+ ML (or SWE) topics in six stages that build on each other, ending with a retrieval check grounded in your resume if you choose to upload it, allowing the practice questions to reference your projects or work experience. It renders LaTeX nicely and code inline without prompting and keeps context across your whole prep cycle.

It isn't strictly a coding practice either, tools like Deep-ML do that well. This is for the conceptual and theory side, which I find often gets a bit ignored by Leetcode style websites, so I wanted to avoid that style. You get walked through an overview, intuition (with visuals), math, code, interview questions, and a retrieval check at the end as mentioned above.

Free tier has 8 sessions/month. Pro ($9/month) adds a practice lab where you can code while referencing your sessions as well as unlimited sessions. I'm still in the early stages of building so feedback on what's missing or broken is greatly appreciated and will go a long way.