Great question. Even I came across it while I was in development process and I've tested the built-in "Study Modes" extensively, and the difference comes down to Intent Persistence.

1. Instruction Drift vs. The Gatekeeper: General-purpose LLMs are trained to be "helpful and agreeable." If a student pushes or shifts the topic, the model often "drifts"—like you mentioned, it might start correcting grammar instead of pushing the child to derive the essay's core logic. Qurio uses a secondary "Gatekeeper" agent that audits every response turn specifically to ensure the "Socratic Loop" stays on the core concept, not just surface-level fixes.

2. The Walled Garden: A general-purpose AI is an open "Ducati"—it has the entire internet's biases and infinite distractions. Qurio provides a closed-loop logic environment. It removes the ads, tracking, and the constant temptation to "just get the answer" that is always one click away in a standard bot.

3. The "Architect" UI: Unlike a standard chat, our Cognitive Process Capsules (CPCs) record the thinking journey, not just the final result. This allows parents to see the logical steps their child took, which is a feature prioritized for education rather than just production.

Ultimately, a kid uses this because it treats them like a Future Architect who needs to understand the "Why," rather than just a user who needs a "Result."