❯ AI cloud provider Lambda is in talks for a pre-IPO round of up to $4 billion at a $14.5 billion pre-money valuation, after its backlog grew to $50 billion in three months

The last private roundAccording to Yahoo Finance, relaying a Wall Street Journal report, AI cloud infrastructure company Lambda is negotiating a pre-IPO round of up to $4 billion at a $14.5 billion pre-money valuation, led by Blackstone and Coatue. Lambda spokespeople declined to comment on the fundraising details.

Buying GPUs to rent them outLambda belongs to the group known as neoclouds: companies that acquire high-performance GPUs and lease them to enterprises training and running large models. It relies exclusively on Nvidia chips and server architecture, and Nvidia took part in its $480 million Series D in February 2025. Last November, TWG Capital led a $1.5 billion round that valued it at $5.9 billion post-money.

One contract carries most of the backlogAn investor document reviewed by the Journal shows Lambda’s backlog growing from $15 billion in June to $50 billion in September, of which $35 billion comes from a cloud services agreement with Anthropic, using Nvidia hardware hosted at a facility in Texas. Management is targeting a 2027 listing, contingent on execution and market conditions.

A new team for the listingIn May, co-founder Stephen Balaban moved to chief technology officer and Michel Combes, a former chief executive of Sprint and Alcatel-Lucent, became CEO; the company also added a former AT&T chief executive to its board. With orders so concentrated in one customer, new investors have to judge whether that contract converts to revenue on schedule and whether Lambda can diversify its customer base before going public.

▮ SIGNALCompute-leasing companies are increasingly valued on the long-term contracts they hold, and with those contracts concentrated in a few model companies, their fates are tied together.