Limitations and restrictions - Amazon Simple Storage Service

Limitations and restrictions

Amazon S3 Vectors has certain limitations and restrictions that you should be aware of when planning your vector storage and search applications.

  • Vector buckets per AWS Region in an account: 10,000

  • Vector indexes per vector bucket: 10,000

  • Vectors per vector index: Up to 2 billion

  • Dimension value per vector: 1 to 4,096

  • Total metadata per vector: Up to 40 KB (filterable + non-filterable)

  • Total metadata keys per vector: Up to 50

  • Filterable metadata per vector: Up to 2 KB

  • Non-filterable metadata keys per vector index: Up to 10

  • Combined PutVectors and DeleteVectors requests per second per vector index: Up to 1,000

  • Combined vectors inserted and deleted per second per vector index: Up to 2,500

  • Request payload size: Up to 20 MiB

  • Vectors per PutVectors API call: Up to 500

  • Vectors per DeleteVectors API call: Up to 500

  • Vectors per GetVectors API call: Up to 100

  • Top-K results per QueryVectors request: Up to 100

  • Vectors listed per page in a ListVectors response: Up to 1,000

  • Vector buckets listed per page in a ListVectorBuckets response: Up to 500.

  • Vector indexes listed per page in a ListIndexes response: Up to 500.

  • Segment count for parallel listing in a ListVectors API call: Up to 16