Limits

The following limits apply to accounts, indexes and vectors (as specified):

Feature	Current Limit
Indexes per account	50,000 (Workers Paid) / 100 (Free)
Maximum dimensions per vector	1536 dimensions, 32 bits precision
Precision per vector dimension	32 bits (float32)
Maximum vector ID length	64 bytes
Metadata per vector	10KiB
Maximum returned results (topK) with values or metadata	20
Maximum returned results (topK) without values and metadata	100
Maximum upsert batch size (per batch)	1000 (Workers) / 5000 (HTTP API)
Maximum index name length	64 bytes
Maximum vectors per index	5,000,000
Maximum namespaces per index	50,000 (Workers Paid) / 1000 (Free)
Maximum namespace name length	64 bytes
Maximum vectors upload size	100 MB
Maximum metadata indexes per Vectorize index	10
Maximum indexed data per metadata index per vector	64 bytes

Limits V1 (deprecated)

The following limits apply to accounts, indexes and vectors (as specified):

Feature	Current Limit
Indexes per account	100 indexes
Maximum dimensions per vector	1536 dimensions
Maximum vector ID length	64 bytes
Metadata per vector	10KiB
Maximum returned results (topK)	20
Maximum upsert batch size (per batch)	1000 (Workers) / 5000 (HTTP API)
Maximum index name length	63 bytes
Maximum vectors per index	200,000
Maximum namespaces per index	1000 namespaces
Maximum namespace name length	63 bytes