Rebellions Raises $250M Series C at $1.4B Valuation.

SEOUL, South Korea — Rebellions said Tuesday it has raised $250 million in Series C funding, valuing the company at $1.4 billion.

Arm participated in the round as a strategic investor, the company said. 

Samsung Ventures and Pegatron VC also invested. Korea Development Bank and Korelya Capital, both existing investors, provided additional capital. Lion X Ventures joined as a new investor.

The company said it will use the funding for mass production of its REBEL-Quad chip and to expand development of products based on chiplet architecture.

Rebellions manufactures chips designed for artificial intelligence inference processing in data centers.

The company produces two chips, ATOM and ATOM-Max, which it said are in mass production.

These chips have been deployed with unspecified customers in Japan, Saudi Arabia and the United States, according to the company.

Rebellions said the chips are used in what it described as South Korea’s largest commercial artificial intelligence service, but did not provide further details.

The company released REBEL-Quad in August. Rebellions said the chip is the first UCIe-Advanced AI accelerator, a claim that could not be independently verified.

The chip contains 144 gigabytes of HBM3E memory and uses chiplet architecture, according to specifications provided by the company.

Rebellions said the chip is designed for peta-scale inference operations in data centers.

The company plans to expand its operations in the United States, Europe and Asia-Pacific markets. Rebellions said these efforts will support sovereign AI infrastructure initiatives and hiring in artificial intelligence and semiconductors.

Sungkyue Shin, the company’s chief financial officer, said in a statement that the investment marks a milestone in the company’s development from a domestic AI chip manufacturer to a regional competitor in the Asia-Pacific market.

The company said demand for AI inference chips is increasing as artificial intelligence workloads grow.