The people spoke on condition of anonymity because the details of the project were not yet public.
Amazon declined to comment. The Information reported on the project name on Tuesday.
The team is spearheaded by Rohit Prasad, former head of Alexa, who now reports directly to CEO Andy Jassy. As head scientist of artificial general intelligence (AGI) at Amazon, Prasad brought in researchers who had been working on Alexa AI and the Amazon science team to work on training models, uniting AI efforts across the company with dedicated resources.