  We introduce LightOn's Optical Processing Unit (OPU), the first photonic AI
accelerator chip available on the market for at-scale Non von Neumann
computations, reaching 1500 TeraOPS. It relies on a combination of free-space
optics with off-the-shelf components, together with a software API allowing a
seamless integration within Python-based processing pipelines. We discuss a
variety of use cases and hybrid network architectures, with the OPU used in
combination of CPU/GPU, and draw a pathway towards "optical advantage".
