Very interested in this. Would like to try it out for an AI framework that combines knowledge graphs with word embeddings and expert systems, and although the Python ecosystem is the de facto standard (despite lack of safety and performance), and Rust seems theoretically the best, Swift seems to check all the boxes in terms of safety and expressiveness for me. Swift even has a relatively huge community, but it's so focussed on iOS stuff.

I know Chris Lattner did something with TensorFlow though.

Is anyone into this?