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

# Sync/async architecture

> What determines response time depending on problem size.

<Note>
  Explanation — priority P2.
</Note>

## To be written

* When the API responds synchronously vs asynchronously
* Factors that determine computation time
* How to track the progress of an async calculation