We are building the most brain-like hardware ever imagined

We are inspired by the elegance, scale, and efficiency of the human brain. Our technologies focus on in-memory processing, analog computation, and scalable systems.

We are building the most brain-like hardware ever imagined

The world's first scalable, analog processor for artificial intelligence

The world's first scalable, analog processor for artificial intelligence

Analog neurons


We tile artificial neurons across the entire chip surface, enabling higher neuron density in CMOS hardware than ever before. We can fit millions of artificial neurons in a square centimeter, enabling massive neural networks to fit onto a single chip.
The world's first scalable, analog processor for artificial intelligence

Memristive synpases


The memristor is widely recognized as the ideal artificial synapse. Memristor is a combinaton of "memory" and "resistor"; it is a resistor capable of changing its resistance. Our memristive synapses exist in the shells of our wires, stacked vertically on top of our neurons.
The world's first scalable, analog processor for artificial intelligence

Nanowire axons


Our nanowires are randomly arranged on the surface of the chip. Emerging from this random placement is a powerful, sparse, brain-like topology: a small-world network. This connectivity allows our network to remain well connected even at massive scale.

The world's first algorithm for end-to-end analog training and inference

We are developing new algorithms for fully analog neural networks, utilizing fundamental physics to further scale artificial intelligence.


We look forward to sharing more about this technology soon.

Hear what others are saying

"Rain is...allowing extremely efficient, sparse connectivity as the basic building block of compute. Their chip allows for exploring models with much high dimensional states, closer to how the brain actually works."

Scott Gray

Technical Staff, OpenAI, formerly of Nervana Systems