An alternative to Pinecone is MyScale DB. It is SQL-based vector database and has generous free tier now. https://myscale.com/
1. Manages both structured and vectorized data in a single database and can perform joint queries and analytics on both types of data.
2. Cloud-native OLAP database architecture enables operations on vectorized data to be executed with astounding speed.
3. Complete and extended SQL support for all data operations, accessible via developer tools such as Python SDK.