Samsung backs South Korean AI chip startup Rebellions ahead of IPO
Last year, Rebellions merged with another startup in South Korea called Sapeon, creating a firm that is being positioned as one of the country's promising rivals to Nvidia.
Rebellions is currently raising money and is targeting funding of between $150 million and $200 million, Sungkyue Shin, chief financial officer of the startup, told CNBC on Tuesday.
Samsung's investment in Rebellions last week was part of that, Shin said, though he declined to say how much the tech giant poured in.
Since its founding in 2020, Rebellions has raised $220 million, Shin added.
The current funding round is ongoing and Shin said Rebellions is talking to its current investors as well as investors in Korea and globally to participate in the capital raise. Rebellions has some big investors, including South Korean chip giant SK Hynix, telecommunication firms SK Telecom and Korea Telecom, and Saudi Arabian oil giant Aramco.
Rebellions was last valued at $1 billion. Shin said the current round of funding would push the valuation over $1 billion but declined to give specific figure.
Rebellions is aiming for an initial public offering once this funding round has closed.
"Our master plan is going public," Shin said.
Rebellions designs chips that are focused on AI inferencing rather than training. Inferencing is when a pre-trained AI model interprets live data to come up with a result, much like the answers that are produced by popular chatbots.
With the backing of major South Korean firms and investors, Rebellions is hoping to make a global play where it will look to challenge Nvidia and AMD as well as a slew of other startups in the inferencing space.
Rebellions has been working with Samsung to bring its second-generation chip, Rebel, to market. Samsung owns a chip manufacturing business, also known as foundry. Four Rebel chips are put together to make the Rebel-Quad, the product that Rebellions will eventually sell. A Rebellions spokesperson said the chip will be launched later this year.
The funding will partly go toward Rebellions' product development. Rebellions is currently testing its chip which will eventually be produced on a larger scale by Samsung.
"Initial results have been very promising," Sunghyun Park, CEO of Rebellions, told CNBC on Tuesday.
Park said Samsung invested in Rebellions partly because of the the good results that the chip has so far produced.
Samsung is manufacturing Rebellions' semiconductor using its 4 nanometer process, which is among the leading-edge chipmaking nodes. For comparison, Nvidia's current Blackwell chips use the 4 nanometer process from Taiwan Semiconductor Manufacturing Co. Rebellions will also use Samsung's high bandwidth memory, known as HBM3e. This type of memory is stacked and is required to handle large data processing loads.
That could turn out to be a strategic win for Samsung, which is a very distant second to TSMC in terms of market share in the foundry business. Samsung has been looking to boost its chipmaking division. Samsung Electronics recently entered into a $16.5 billion contract for supplying semiconductors to Tesla.
If Rebellions manages to find a large customer base, this could give Samsung a major customer for its foundry business.
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