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Limits

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

FeatureCurrent Limit
Indexes per account50,000 (Workers Paid) / 100 (Free)
Maximum dimensions per vector1536 dimensions
Maximum vector ID length64 bytes
Metadata per vector10KiB
Maximum returned results (topK) with values or metadata20
Maximum returned results (topK) without values and metadata100
Maximum upsert batch size (per batch)1000 (Workers) / 5000 (HTTP API)
Maximum index name length64 bytes
Maximum vectors per index5,000,000
Maximum namespaces per index50,000 (Workers Paid) / 1000 (Free)
Maximum namespace name length64 bytes
Maximum vectors upload size100 MB
Maximum metadata indexes per Vectorize index10
Maximum indexed data per metadata index per vector64 bytes

Limits V1 (deprecated)

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

FeatureCurrent Limit
Indexes per account100 indexes
Maximum dimensions per vector1536 dimensions
Maximum vector ID length64 bytes
Metadata per vector10KiB
Maximum returned results (topK)20
Maximum upsert batch size (per batch)1000 (Workers) / 5000 (HTTP API)
Maximum index name length63 bytes
Maximum vectors per index200,000
Maximum namespaces per index1000 namespaces
Maximum namespace name length63 bytes