> ## Documentation Index
> Fetch the complete documentation index at: https://docs.topk.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Limits

> Production limits for collections.

<Warning>
  These limits are subject to change as we continuously improve our system. If you expect to be blocked by any of these, please
  <a href="https://topk.io/contact"> let us know.</a>
</Warning>

## Collection Limits

| Scope | Production limit |
| - | - |
| Max collections | Unlimited |
| Max documents (global) | Unlimited |
| Max documents (per partition) | 1B+ |
| Write throughput (global) | Unlimited |
| Write throughput (per partition) | \~70MB/s |
| Query throughput (global) | Unlimited |
| Query throughput (per partition) | 1k+ queries/s |
| Max document size | 200KB |
| Max indexed fields | Unlimited (up to document size) |
| Max dense vector dimension | 16,384 |
| Max sparse vector dimension | 2^32-1 |
| Max multi-vector dimension | 1024 |
| Max upsert request size | 8MB |
| Recall | 95%+ |

<Note>
  Per-partition limits apply independently, so total collection throughput grows with the number of partitions. Learn more about [Partitions and Multi-tenancy](/concepts#multi-tenancy).
</Note>


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