I have gone through following question
SharePoint REST API call with more than 500 rows
We want to use Search API with REST API or JSOM. We have large lists in SharePoint. The data can be 100000 or more items in a single list. There are multiple large lists. In some scenarios search API which will search across all lists and in some scenarios it will also search in a single lists.
So like REST API does it throw threshold error for more than 5000 matched items or does SharePoint Search REST API throws any threshold limit in any case?