Unstuck (https://unstuckstudy.com/) allows dialogue with documents (presentation, pdf, text), YouTube videos or recordings (live or audio files).

The application is course/study oriented and documents can be grouped by “classes” and shared.

Automatic transcripts and notes for YouTube audio and videos.
Smartphone app dedicated to audio and YouTube videos.

Downloads and transcriptions seem unlimited in the free version, about ten chatbot interactions per day for free.

Testing since:
– UNESCO competency frameworks for teachers and learners: https://unesdoc.unesco.org/ark:/48223/pf0000392681 and https://unesdoc.unesco.org/ark:/48223/pf0000392652
– Extraclasse n°29: https://www.YouTube.com/watch?v=tHLlKpuU7Jc
– AI in 90s: https://www.youtube.com/watch?v=1Rsj8mfQEeI