CarbonSix raised a $40 million Series A co-led by DSC Investment and LB Investment to build AI-driven robots for manufacturing lines. The round follows a $4 million seed investment. The round brings the two-year-old company’s total funding to about $44 million, although the company has not disclosed a cumulative funding total.
This is factory-floor robotics, not warehouse or DC automation. CarbonSix is targeting jobs such as film attachment, cable fastening, and machine tending on production lines, not picking or packing in a warehouse.
The round: New investors IMM Investment, Korea Development Bank, SV Investment, and US-based Cortentia and ASQ joined the raise. All of CarbonSix’s seed backers, including Foothill Ventures, Storm Ventures, Zeitgeist Capital and Xquared, also participated. The company did not disclose its valuation.
What it does: CarbonSix’s flagship product, SigmaKit, bundles AI software with robotic hands, grippers, and teaching devices. Instead of programming a robot arm to repeat one fixed path, SigmaKit uses imitation learning. A human demonstrates a task several times to build a training dataset. The system can then generate a working model in under a day, depending on the task.
The company is targeting jobs fixed-path robots handle poorly, including film attachment and removal, cable fastening, machine tending, irregular assembly. It is focusing on electronics, automotive parts, food and beverage, and battery manufacturing.
CarbonSix has not identified any paying customers. It says only that it has received sales inquiries and is running proof-of-concept projects with unnamed manufacturers.
The proof gap: CarbonSix is the newest company in a six-week wave of funding for physical AI robotics. It is also the least proven of the group so far.
CarbonSix ($40M Series A): no named customers, no valuation, no benchmarks disclosed
THEKER ($85M Series A): one named customer, Inditex, which is also an investor
Standard Bots ($200M Series C, $1B valuation): a $37,000 arm trained by demonstration, with Amazon as both investor and customer
NEURA Robotics ($1.4B Series C, $7B valuation): Amazon-backed, still pre-commercial.
Agility Robotics ($2.5B SPAC listing): four named paying customers, including Schaeffler, GXO, Toyota Canada and Mercado Libre, plus $300 million in contracted orders.
CarbonSix CEO Tae-yeon “Terry” Moon, who previously co-founded industrial vision startup SuaLab before its $194.6 million sale to Cognex in 2019, said the company’s goal has been “creating practical, field-ready Physical AI that drives measurable bottom-line results for manufacturers.”
The gap between capital raised and disclosed revenue runs across this entire group, and CarbonSix sits at the far end of it. The latest round highlights investor interest in imitation learning for factory robots. It does not yet show that CarbonSix's technology performs at commercial scale.
