Do We Still Need Vector Databases for RAG with OpenAI's Releasing of Its Built-In Retrieval?

OpenAI's built-in Retrieval feature in its Assistants API has some limitations, such as scalability constraints and lack of customization. These issues can be addressed by integrating a custom retriever powered by a vector database like Milvus or Zilliz Cloud. This approach allows developers to optimize and configure the retrieval process according to their specific needs, improving overall efficiency.