Is there thread session in the new "Responses API"?

[_j]

Introducing the Responses API

The responses API doesn’t have threads, a single list of messages and internal calls that you can add to and run. Instead, for server-side chat history state, it stores the request ID and its completion contents with every API call you make. There is also an API parameter for “instructions” if you want the first system message to be separately changeable instead of being a part of the past messages sent. To use this, (in the manner that many novices would expect API calls to somehow “remembe…