Rebellions vs Skild AI
Side-by-side comparison of AI visibility scores, market position, and capabilities
Korean AI chip unicorn. $2.34B valuation. ATOM and REBEL NPUs for inference. Backed by Samsung, Arm, SK Hynix. $850M raised. IPO planned 2026. Founded 2020, Seoul.
About
Rebellions was founded in 2020 in Seoul, South Korea, with the mission of developing AI inference chips that challenge NVIDIA's dominance in the neural processing market. The company assembled a team of chip architects from Samsung, AMD, and Qualcomm to design neural processing units (NPUs) purpose-built for transformer-based model inference — the dominant AI workload type powering large language models, recommendation systems, and computer vision applications. Rebellions represents South Korea's most prominent homegrown AI semiconductor bet.\n\nRebellions' chip portfolio includes the ATOM NPU, optimized for edge and data center inference, and the REBEL processor, designed for large-scale LLM inference with high memory bandwidth and low latency characteristics. The company's architecture prioritizes efficient attention mechanism computation and KV cache management — the performance bottlenecks that determine inference throughput for modern AI models. Strategic investors Samsung, Arm, and SK Hynix provide both capital and supply chain positioning, giving Rebellions access to advanced foundry processes and packaging technologies critical for competitive AI chip production.\n\nRebellions achieved a $2.34B valuation on $850M in total raised capital, establishing itself as the highest-valued AI chip startup outside the United States. The company plans an IPO in 2026 and is developing its next-generation chips in collaboration with partners across the Korean semiconductor ecosystem. Rebellions competes with Groq, Cerebras, and SambaNova in the AI inference accelerator market, differentiating through Korea-based supply chain integration, sovereign AI infrastructure positioning, and transformer-optimized architecture that targets the cost-per-token economics demanded by large-scale inference deployments.
Universal robot brain startup raised $1.4B Series C at $14B valuation in Jan 2026 led by SoftBank with Nvidia and Bezos; $30M 2025 revenue; deployed at Foxconn
About
Skild AI is building a universal robot brain — a foundation model for physical intelligence that can power a broad range of robot types without requiring task-specific training for each deployment. Founded to solve the fragmentation problem in robotics AI, where every robot type and task requires separate model development, Skild's approach trains a single generalist model on diverse robotic data and fine-tunes it rapidly for specific deployments. The company was founded by robotics AI researchers who identified the model reuse gap as the primary barrier to scalable robot deployment.\n\nSkild's generalist robot model has been deployed across more than 30 distinct robot types — spanning manipulation arms, mobile platforms, and humanoid form factors — demonstrating the cross-hardware generalization that most robot AI systems lack. The platform targets robotics manufacturers, logistics operators, and industrial automation companies that need AI-capable robots but lack the internal ML infrastructure to develop foundation models themselves. By offering a model-as-a-service layer, Skild enables robot OEMs and systems integrators to add AI capabilities without building the underlying research infrastructure.\n\nSkild AI raised a $1.4 billion Series C in January 2026 at a $14 billion valuation, led by SoftBank with co-investment from NVIDIA and Jeff Bezos. The round was one of the largest in robotics AI history and reflects institutional conviction in the physical AI market's scale. With $30 million in 2025 revenue and accelerating enterprise deployments, Skild is building the financial foundation to match its valuation. The SoftBank-NVIDIA investor combination positions Skild at the center of the global robotics deployment wave.
AI Visibility Head-to-Head
Key Details
Capabilities & Ecosystem
Capabilities
Also Compare
Track AI Visibility in Real Time
Monitor how your brand performs across ChatGPT, Gemini, Perplexity, Claude, and Grok daily.