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Rivos
Acquired by Meta · 2025
Rivos was an AI Accelerators company founded in 2021 and based in Santa Clara, USA. It was acquired by Meta in 2025.
Rivos built RISC-V based data-center processors and accelerators for cloud and AI workloads. Raised $250M Series A from Dell, Koch, others; settled Apple trade-secret lawsuit in 2023. Acquired by Meta in October 2025 to accelerate Meta's in-house AI silicon development.
Rivos represents the most ambitious attempt to use open RISC-V architecture to challenge x86 and Arm in the data center.
At a glance
Total raised
$250M
Headcount
—
Headquarters
Santa Clara
Founded
2021
Status
Acquired
Subsector
AI Accelerators
Funding history
Total raised
$250M
Rounds tracked
2
Latest stage
Acquired
| Date | Stage | Amount | Valuation | Lead investors |
|---|---|---|---|---|
| Oct 1, 2025 | Acquired | — | — | Meta |
| Jan 1, 2024 | Series A | $250M | — | Matrix Capital Management |