Mendable is a SaaS platform that integrates AI chat search into applications, primarily used for documentation, customer support, internal training, and product copilators. The company has experienced rapid growth, with over 400K messages queried on its platform in the previous month. Mendable's tech stack includes Railway, which handles most of the workload, as well as custom-built services using JavaScript and Python. As the company expands, it is addressing challenges such as rate limiting, overloaded models, and exploring open-source LLMs to improve its service. Readers can learn more about Mendable by visiting its website and following the company on Twitter.