Currently, Zilliz Cloud only supports AUTOINDEX, a customized version of HNSW (for performance-optimized clusters) and DiskANN (for capacity-optimized clusters). AUTOINDEX is designed to enhance search performance. For a performance-optimized cluster with 1 million 768-dimensional vectors, the QPS can reach several hundred and the latency is below 100 milliseconds. For a Capacity-optimized cluster with the same data volume, the QPS can reach 50 and the latency is over 200 milliseconds. For more details, see AUTOINDEX Explained.