Vanna

Vanna is an open-source Python framework for text-to-SQL. You train it on your database schema, documentation and example queries, and then people can ask questions in plain English and get accurate SQL back. Because it learns from your own context, the results are usually closer to what you want than a generic chatbot guess. It works with many databases and language models, and can power a chat interface or be embedded in your own app. The open-source version is free, and there is a hosted option for teams that want less setup. It is a solid choice for building an internal data assistant.