AI chip startup Rebellions hits $2.34 billion valuation

Rebellions, a South Korean fabless AI chip startup—meaning it designs chips but outsources their fabrication—has raised $400 million in a pre-IPO funding round. The company announced on Monday that the round, led by Mirae Asset Financial Group and the Korea National Growth Fund, brings its valuation to approximately $2.34 billion. While the funding is designated as pre-IPO, the company has not disclosed specific timing for its planned public offering, and Chief Business Officer Marshall Choy declined to comment on the IPO’s exact schedule.

The startup, founded in 2020, designs chips specifically for inference, which is the compute necessary for AI models to respond to user queries. Alongside the funding, Rebellions announced the launch of two new AI infrastructure platforms, RebelRack and RebelPOD. RebelPOD represents a production-ready unit of inference compute, while RebelRack integrates multiple racks into a scalable cluster designed for large-scale AI deployment. With these products, the company is seeking to challenge the dominance of established chip and cloud giants, including Nvidia, AWS, Meta, and Google.

The latest $400 million round caps a rapid period of fundraising for the startup:

• Series B: Rebellions closed $124 million in 2024.
• Series C: The company raised $250 million in November.
• Total Haul: The startup’s total fundraising now stands at $850 million, with $650 million of that amount raised in the last six months.

Rebellions plans to use the capital to grow its presence in Asia, the Middle East, and the U.S. Under the direction of Choy, who is leading these expansion efforts, the company has recently established entities in the U.S., Japan, Saudi Arabia, and Taiwan. In the U.S., Rebellions plans to build an ecosystem of technology partners, targeting cloud providers, telecom operators, government agencies, and neoclouds.

Sunghyun Park, co-founder and CEO of Rebellions, noted that the market is shifting toward practical deployment. “AI is now measured by its ability to operate in the real world at scale, under power constraints, and with clear economic return. That shifts the center of gravity toward inference infrastructure and software that makes that infrastructure usable,” Park said.

Why it matters

Rebellions is positioning itself as a key challenger to Nvidia’s dominance by focusing on inference infrastructure, using this capital to aggressively expand its footprint across the U.S., Asia, and the Middle East.