1. Khoj has been around since early 2021, and both of us have been contributing to open source for several years. Being open source for a project like this just makes sense. 2. Search actually is 100% offline. It's using sentence transformer models from huggingface. 3. Chat uses OpenAI's model only because they're currently best in class (and easy to set up). Our plan (more of a 6-month view) is to have our own open source LLM hosted for inference. See issue for reference: https://github.com/khoj-ai/khoj/issues/201