About Rivos
Rivos was a Santa Clara startup that designed data center processors and AI accelerators on RISC-V, an open instruction set that any company can use without paying a licence fee. Its work covered both the CPU and the accelerator side of server chips. Meta confirmed in October 2025 that it had acquired the company, with terms undisclosed, to support its in-house chip program for AI. Rivos was founded in 2021 and no longer operates as an independent company.
Rivos was founded in 2021 and is based in Santa Clara, CA, United States. It is listed under Custom Silicon, AI Accelerators, CPUs & RISC-V. Reported funding is $2B valuation (acquired).
Compute Technologies
- Custom Silicon
- AI Accelerators
What Rivos works on
Custom Silicon
Custom silicon means a company designs its own chips for its own products or data centers instead of buying standard parts. The chip is made by a foundry such as TSMC, but the design belongs to the customer.
AI Accelerators
An AI accelerator is a chip, or a part of a chip, designed to run machine learning faster or with less energy than a general-purpose processor. The category includes GPUs, TPUs, neural processing units (NPUs) and chips from many startups.
CPUs & RISC-V
A CPU, or central processing unit, is the general-purpose chip that runs a computer. It reads instructions, does arithmetic and logic, and decides what happens next. Every phone, laptop and server has at least one.
