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Korean gov't, investors pour 640 billion won into AI chip startup Rebellions in pre-IPO funding

Published: 31 Mar. 2026, 17:20 Updated: 31 Mar. 2026, 18:47

Rebellions’ AI accelerator is seen in this undated photo provided by the company. [REBELLIONS]

Korea’s government and private investors have backed AI chip startup Rebellions with a 640 billion won ($420 million) pre-IPO funding round, valuing it at 3.4 trillion won, the company said Tuesday.

The deal includes the first direct investment under the government’s “K-Nvidia” initiative, which aims to nurture a globally competitive chip company. The startup is considered a key player as the sector shifts from training-focused graphics processing units (GPUs) to inference semiconductors.

The latest funding includes 300 billion won in policy capital — 250 billion won from the National Growth Fund and 50 billion won from the Korea Development Bank — alongside 340 billion won from existing investors and new private capital led by Mirae Asset.

The latest round brings Rebellions' total funding to $850 million. The company previously raised $250 million in a Series C round in September last year.

Rebellions develops neural processing units (NPUs) designed to address the limitations of GPUs, which have dominated AI training due to their ability to handle parallel computations. NPUs, by contrast, are optimized for inference, the stage at which trained AI models operate in real-world applications.

Its flagship Rebel-100 chip uses a chiplet design that connects multiple smaller chips into a single system. The processor pairs with HBM3E, the latest high bandwidth memory standard that stacks memory vertically to improve data throughput, aiming to deliver both speed and power efficiency.

Industry demand has increasingly shifted toward inference, where cost and energy efficiency matter as much as performance, as companies deploy AI services at scale.

Rebellions said its revenue grew roughly tenfold in 2025 from 2023, indicating early signs of commercialization. The company plans to more than double its work force from about 300 employees.

Competition remains intense. Nvidia and AMD continue to dominate the GPU market, while big technology firms such as Google and Amazon Web Services are expanding their own AI chip offerings, building integrated ecosystems that combine hardware, software and cloud infrastructure.

Analysts say securing customers will prove critical to Rebellions’ prospects, as adoption by data centers and cloud providers will determine whether the company can gain meaningful market share.

“We will grow our team to more than twice its current size with competitive talent and achieve a higher level of talent density,” said Rebellions CEO Park Sung-hyun. “We aim to prove our competitiveness at the center of the global AI infrastructure market together with Korea’s AI and semiconductor ecosystem.”

This article was originally written in Korean and translated by a bilingual reporter with the help of generative AI tools. It was then edited by a native English-speaking editor. All AI-assisted translations are reviewed and refined by our newsroom.
BY KWEN YU-JIN [[email protected]]