OAI Navigator is a GPT developed by hato.ai and is intended as a comprehensive guide to OpenAI tools and APIs. The tool serves as an interactive, knowledge-packed guide providing the newest and most relevant pointers and reference material about OpenAI and its documentation. The specialized nature of OAI Navigator makes it a useful and efficient tool for individuals needing to navigate OpenAI's offerings and understand its various tools at a deeper level. This GPT can answer questions and provide valuable insights about OpenAI's docs, adding a layer of practicality and utility to understanding OpenAI resources. It covers a wide range of topics, from API usage guides and token counting methods for chat API calls, to prompt-engineering strategies and ways to leverage custom GPTs in API usage. It is also equipped to guide users on how to work with the Assistants API. The knowledge-based application of OAI Navigator makes it a two-fold tool where users can extract the necessary guidance and simultaneously learn about OpenAI tools with an interactive approach. Hence, both beginner and advanced level users can benefit from the information provided by this tool. As it is built on top of ChatGPT, OAI Navigator requires ChatGPT Plus for full functionality. This allows for more tailored conversations with the GPT, enhancing the users' understanding of OpenAI's documentation.