Quick question for anyone building with AI right now—has anyone successfully set up a “proprietary AI brain” using off-the-shelf tools instead of a custom RAG build? I’m exploring options like Notion AI, CustomGPT, DocsBot, Guru, etc., (enterprise systems are too big for us) and trying to keep everything grounded in our own IP without drift. The ultimate goal is to have AI work with me as a strategic partner to build our revenue and client base, but it must stay within our unique IP, without drifting or hallucinating. Would really value any firsthand experience or recommendations.