Free / Pro $29/mo ($299/yr) / Plus $99/mo ($999/yr) / Enterprise $4,999 Tian AI is a fully offline, three-layer thinking AI engine that runs entirely on your local hardware. No cloud dependency. No data leaving your device. No subscription fatigue. Here's what that means in practice — across three real scenarios. Scenario 1: The Privacy-Conscious Researcher User : Dr. Chen, a patent attorney working with sensitive client documents. Problem : Dr. Chen needs AI assistance to analyze 200+ pages of technical patents, cross-reference prior art, and draft preliminary responses. But his firm strictly prohibits sending client data to any cloud AI service (ChatGPT, Claude, Gemini).…