The unconventional South Korean AI chip company, backed by Samsung, SK Hynix and Aramco, is raising $650 million in six months and is targeting Meta and xAI as US customers. Korea’s National Development Fund chose Rebellions as its first investment.
rebellions, A South Korean AI extraction chip companyclosed a $400 million pre-IPO funding round led by Mirae Asset Financial Group and Korea National Development Fund, valuing the company at approximately $2.34 billion.
The round brings total funding to $850 million and follows a $250 million Series C in September 2025, meaning Rebellions has raised $650 million in the last six months alone, more than 75% of its total capital.
The company simultaneously announced two new products: RebelRack™ and RebelPOD™, vertically integrated AI infrastructure platforms designed to take the chiplet-based Rebel100™ NPU from silicon into fully deployable data center systems.
The Korea National Development Fund, a state-backed public-private vehicle created to support strategic industries including artificial intelligence and semiconductors, has selected Rebellions as the first investment under its K-Nvidia initiative, South Korea’s program to develop domestic AI chip champions that can compete globally.
The NGF contributed ₩250 billion (about $166 million) of the total round. Mirae Asset, which has backed Rebellions since Series A, led the rest alongside private investors.
Eung-Suk Kim, vice chairman and chief executive officer of Mirae Asset Venture Investment, described the round as reflecting strong confidence in Rebellions’ potential. “Demonstrating your capabilities and value on the global stage.”
Rebellions was founded in 2020 and designs incredible AI chips optimized for the computational workload of inferring, production AI models rather than training them.
Its flagship chip is built on the Rebel100™ chiplet architecture and uses UCIe interconnects and HBM3E memory. The company merged with Sapeon (June 2024), built commercial deployments across enterprises and governments, and now has a full software approach based on open standards: Kubernetes, vLLM, PyTorch, Triton, Hugging Face and Red Hat OpenShift are all supported.
Two new products extend this vertical integration: RebelRack™ provides a production-ready output computing unit, while RebelPOD™ integrates multiple racks into a scalable cluster for large-scale AI deployment.
Sunghyun Park, Co-Founder and CEO, told CNBC The United States is now the main target with its “big laboratories”, especially naming it Meta and xAI as preferred customers over hyperscalers such as Amazon and Microsoft.
Active concept testing is underway with US customers. He was frank about one limitation: the supply of a memory chip. “Memory is not so easy to get. But our demand is very high” he said.
His argument is why Rebellions is better positioned than other extractive chip startups: Samsung and SK Hynix are both investors, making the supply relationship structurally more secure. Marshall Choy, who recently joined as Chief Business Officer, leads the US expansion.
The company is considering an upcoming IPO, although no time has been specified.
