What's so "AI" about it? It doesn't even have a TPU. Kendryte K210 has a fixed point TPU, 400MHz dual core RISC V with FPU, 8 channel audio DSP, FFT and crypto acceleration, and costs $8.90 with wifi and $7.90 without. And the module is the size of a half of a postage stamp. Runs TensorFlow Lite (a subset of ops, but good enough to do practical things).
8MB RAM is more than enough to run a quantized MobileNet, which they demonstrate by preloading object detection on it, out of the box. And the chip is real. I have a couple of boards with it, it works. I guess people just have a hard time believing all the stuff in the spec can be done for less than 10 bucks. 28nm by the way, not a joke. The company got its start in crypto mining, so this is a side gig for them.
