Koji by Brilliant

Koji is the AI tutoring layer from Brilliant, the interactive learning platform known for math and science courses. The product pitches personalized STEM tutoring with conversational guidance, presumably building on Brilliant's existing curriculum library. For the builder reading this: it is not a tool you integrate or fork. It is a consumer product. The reason it is worth a brief mention is that it is a concrete data point in what serious AI tutoring UX looks like when it is built on top of real curriculum rather than raw LLM output — which is a useful reference if anyone here is building in the edtech or consumer learning space. The positioning as a household tutor rather than a student-only product is a deliberate broadening move. Reservation: the launch page is thin on specifics about what Koji actually does differently from a prompted GPT-4 session plus Brilliant's existing content. -> Best for: technical PM or indie hacker scoping an edtech or consumer learning product.