This is the AI News Briefing of July 21, 2023.(00:32) Apple unveils AI chatbot 'Apple GPT'(00:56) Debates over ChatGPT's performance degradation(01:31) OpenAI's ChatGPT introduces 'custom instructions'(01:51) AI Deals of the Week: Preply, Tractable, and moreFollow our newsletter at www.adepto.ai for a deeper dive into these fascinating developments and for the latest AI news and insights.The AI News Briefing has been produced by Adepto in cooperation with Wondercraft AI.Music: Inspire by Kevin MacLeod (incompetech.com), Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/