The RPI (Research → Plan → Implement) framework is a structured, three-phase methodology for AI-assisted software development that trades raw speed for predictability and correctness by inserting explicit validation gates between each phase.
When you ask an AI agent to "just implement" something, you're silently gambling that it correctly understands intent, discovers all relevant code, makes sound architectural decisions, doesn't hallucinate APIs, and stays in scope. Without structure, even capable models become unreliable code generators — producing context overflow, hallucinations, scope creep, and untestable output. RPI fixes this by separating meaning from execution: research and planning act as "compile steps" so that implementation becomes deterministic rather than live interpretation.[^1_1][^1_2]