Lab

Verified 12 November 2026

Lambda

A San Francisco AI infrastructure and GPU cloud company, formerly known as Lambda Labs, that rents and builds compute for labs training and running AI models.

Its site says it was founded in San Francisco in 2012 by machine-learning engineers; other profiles name brothers Stephen and Michael Balaban as the founders. It describes its work as building modular "AI factories" (power, liquid cooling and high-bandwidth interconnects) and says its mission is to make compute "as ubiquitous as electricity". It moved its website from lambda.ai to lambda.com in 2026.

PYMNTS, citing the Wall Street Journal, reported on 6 October 2026 that Lambda was raising up to $4 billion at a $14.5 billion valuation before a planned 2027 IPO, after a November 2025 round of more than $1.5 billion at $5.9 billion post-money. Lambda has also announced a multibillion-dollar agreement with Microsoft to deploy AI infrastructure on tens of thousands of NVIDIA GPUs, and it moved from renting capacity from larger clouds to building and owning its own data centres. One profile reports Michel Combes became CEO in May 2026, with Stephen Balaban moving to CTO; titles differ between sources.