Mecka AI is nearing a Sequoia-led financing at a valuation of about $500 million, according to two people familiar with the talks. The exact investment size is not known, and the terms could still change. Mecka and Sequoia did not comment on the report.

The prospective deal comes only three months after the two-year-old startup announced a $60 million round led by Framework Ventures. Mecka collects physical-world data for humanoid and other robots by paying people to record everyday activities, including making coffee and repairing cars, with body sensors and smartphones. The resulting first-person movement data addresses a shortage of real interactions that developers can use to train general-purpose machines.

The four founders do not come from robotics backgrounds; several previously built finance or cryptocurrency companies. Mecka has not disclosed its customers, though this kind of data is commonly combined with teleoperation and other collection methods by robotics labs. In June, the company projected a $100 million annual run rate by the end of 2026. Both that target and the new valuation remain forward-looking, but the rapid fundraising shows how strongly investors value access to human-motion data as robot development accelerates.