EngineeringJuly 7, 2026We set out to build the first AI tutor to teach math and reading to kids ages 4-9. For AI to actually teach a five-year-old, pedagogy must be baked into the engineering. A child can't wait for a slow reply, can't read a chat interface, and can't unhear anything a model gets wrong. We wanted to share some of the learnings that shaped our architectural decisions building a real-time AI tutor.A 2-second pause in conversation feels different to a child than to a developer, or ...