[mumblemumble]

The old chestnut about AI just being a term for things we haven't quite figured out yet might apply here. "Products that are well-known... and are used on a daily basis by a significant amount of people" are almost by definition not AI.

But here are some examples of things that used to fall under the AI umbrella but don't really anymore:

  - Fulltext search with decent semantic hit ranking (Google)
  - Fulltext search with word sense disambiguation (Google)
  - Fulltext search with decent synonym hits (Google)
  - Machine translation
  - Text to speech
  - Speech to text
  - Automated biometric identification (Like for unlocking your phone)

If you're more specifically asking for everyday applications of GPT-style generative large language models, I don't think that's going to happen for cost reasons. These things are still far too expensive for use in everyday consumer products. There's ChatGPT, but it's kind of an open secret that OpenAI is hemorrhaging money on ChatGPT.