Assistant not giving proper response

I am on the dev version with commit ID "591c0ee59e50619861cb81fe39ddbb84a0d25dc9".
The issue still exists.
I am getting a mix of JSON and text explanation.
I asked ChatGPT and it gave me the response: https://www.drupal.org/files/issues/2025-01-03/model_response.md →

So the idea that I liked here is that we can tell it to always respond in JSON.
If some action is there, it will respond with the action key, if no action, then it will respond with some other key, eg. {text: ''}.

Then in our code we can check if text or action and proceed accordingly.
cc: @marcus_johansson

We're probably going to need details of your set up to try and recreate this - the prompts used for the assistant and the set up of the VDB provider, and also your SAPI back-end. It would also be useful to have the questions you asked and the responses you expected.