The following limits apply to accounts, indexes, and vectors:
| 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 |
50 |
Maximum returned results (topK) without values and metadata |
100 |
| Maximum upsert batch size (per batch) | 1000 (Workers) / 5000 (HTTP API) |
| Maximum vectors in a list-vectors page | 1000 |
| Maximum index name length | 64 bytes |
| Maximum vectors per index | 10,000,000 |
| 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 for V1 indexes (deprecated)
| Feature | Limit |
|---|---|
| Indexes per account | 100 indexes |
| Maximum dimensions per vector | 1536 dimensions |
| Maximum vector ID length | 64 bytes |
| Metadata per vector | 10 KiB |
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 |