These things come with a lot of limitations, like not being able to work with 4D and larger tensors, plus the 8 bit quantization. Getting models to run on them is a real pain.

This is certainly interesting, but doesn't seem quite like what I want. It only seems to offer "Edge TPUs" which...

> The Edge TPU ... supports only TensorFlow Lite models that are fully 8-bit quantized and then compiled specifically for the Edge TPU.

It's a different chip

Clearly; they're tiny and for embedded applications.

They even wrote "The products offered by Google are unrelated to the products offered under the CORAL trademarks" in the page footer.

This is like saying Fisher Price toy cars are equivalent to F1 cars.