To get the last record created in Odoo 16, you can use the search() and browse() methods of the corresponding model. Here is an example of how you can do this:

partner_ids = env['res.partner'].search([], order="create_date desc", limit=1)

last_partner = partner_model.browse(partner_ids) # You can now access the fields of the last created partner record

print(last_partner.name)

print(last_partner.email) # etc.

In the code above, we first get a reference to the res.partner model using the env object. Then we use the search() method to find the ID of the last record created, using the order parameter to sort the records by create_date in descending order. We also set a limit of 1 to make sure we only get the last record. We then use the browse() method to retrieve the actual record based on its ID. Finally, we can access the fields of the last created record using the corresponding attributes of the last_partner object.