SingleStoreDB is a good fit for AI applications like text similarity matching due to its support of vector functions such as dot_product. A chatbot that uses SingleStoreDB along with AI models like Whisper and ChatGPT was built to answer questions from the YCombinator Youtube channel about startups and give startup-related advice. The bot transcribes videos using OpenAI's whisper model, creates embeddings for the text, stores them in a blob datatype in SingleStoreDB, and uses SQL queries to retrieve the most relevant text for answering questions. Once the most relevant text is retrieved, it is sent to ChatGPT to answer the question. SingleStoreDB is well-suited for vector operations and supports easy use of SQL queries, making it an attractive tool for developers building AI applications.