Meta is investing in a single AI system to power video recommendations across platforms, shifting from its previous approach of individual models. Additionally, Writable, an AI tool recently acquired by Houghton Mifflin Harcourt, is aiding teachers in grading essays by using ChatGPT to provide feedback. Lastly, Zapier acquired the team from Vowel and subsequently launched Zapier Central for AI bot creation while appointing Vowel's CEO as Director of AI.