Pgai Vectorizer is an open-source tool that automates embedding creation in PostgreSQL, allowing developers to modify their RAG chunking and formatting strategies like they would adjust a database index using simple SQL. This approach enables side-by-side comparisons of different approaches and ensures zero downtime for AI features during testing. Pgai Vectorizer supports multiple chunking functions, allowing the flexibility to easily experiment and test to find the best chunking strategy for your RAG application. The tool also tracks which chunking and formatting strategies were used for each embedding, facilitating A/B testing and gradual rollouts of new strategies.