Brave is a privacy-focused browser that also offers a search engine called Brave Search. Now they also offer "Ask Brave" which combines search and AI chat.

• You can use it from the Brave Search homepage by clicking the "Ask" button, or clicking the "Ask" tab on the Brave SERP
• If Brave Search is your default search engine, just add a double question mark at the end of any search query and it will use Ask Brave