Ah I see, they released Milvus 2.0 which is similar to Pinecone. What are the differences?
For those interested, here's a comparison with other open source vector databases: https://zilliz.com/comparison. For those who don't want to be burdened with installing and maintaining a local database, there's a managed service available as well: https://zilliz.com/cloud.
Btw, Milvus is described in your comparisons as "a fully open source and independent project", while Weaviate and Qdrant, in contrary, are "maintained by a single commercial company offering a cloud version". Why then the suggested way in the Milvus Quick Start on github is to use Zilliz Cloud?
We (Pinecone) tend to attract customers who want to start, ship, and scale quickly and reliably without worrying about infra and ops overhead.