A new stack for personal AI — starting with an API to train models you own.
Product · API
Most companies rent generic AI that knows nothing about their business. The River API takes state-of-the-art open-source models and trains them on your data and your tasks — so the AI running your support queue, document pipeline, or coding workflow gets more accurate, dramatically cheaper per call, and is owned by you outright.
Train a model on your own examples and your own success criteria, until it handles the workflows generic models get wrong.
A small specialized model matches a frontier giant on your task — faster and cheaper on every call, priced per token.
The trained weights are yours to keep, version, and serve — through an OpenAI-compatible endpoint, with no lock-in.
Mission
At River, our mission is to create personal AI
owned and shaped by each individual.
Today's most powerful AIs are controlled by a handful of large corporations. They are designed to keep you hooked while automating your livelihood. As more meaningful work is handed to machines, we need an answer for how the rest of humanity can flourish.
We imagine a future where your AI works entirely for you and deeply aligns with your values. Compared to the corporate chatbots of today, it will feel completely different: responsible, curious, and truly yours. Most importantly, you'll own everything: the hardware it runs on, the data it learns from, and the intelligence itself.
To achieve our mission, we are rewriting the entire stack from scratch:
River has the soul of a research lab and the heart of a product company. We are here to achieve the breakthroughs in hardware and deep learning that make truly personal AI possible.
Our team includes pioneers from the world's leading AI labs and technology companies with a proven track record of scaling AI organizations.
We are always looking for amazing people to join us on this journey.
Intelligence that flows with you
