Try to enter ''about:config'' in the address bar and set ''browser.ml.chat.provider'' = '''https://www.deepseek.com'''.

Thanks, tried but that did not work. I have to use it mannually but not in sidebar.

Hi, The people who answer questions here, for the most part, are other users volunteering their time (like me), not Mozilla employees or developers. When a Mozilla employee jumps into a discussion, you'll see the ''Mozilla Staff'' label next to their name. If you wish, you can leave feedback for developers on the [[What is Mozilla Connect?|Mozilla Connect]] website. Click the Firefox Menu [[Image:Fx89menuButton]] button in the toolbar, click ''Help'' and select ''Share ideas and feedback…''. Alternatively, you can use [https://connect.mozilla.org/ this link]. Your feedback is collected by a team that reads it and gathers data on the most common issues. You can also file a bug report or feature request. See [[File a bug report or feature request for Mozilla products]] for details.