Lambda Raises $1.5B in Series E to Build AI Data Centers After Major Microsoft Deal

Lambda Secures Record $1.5B Funding Round

AI data center provider Lambda announced Tuesday it has raised $1.5 billion in Series E funding, marking one of the largest funding rounds in the AI infrastructure space this year 1

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. The round was led by TWG Global, a $40 billion investment firm formed by billionaires Thomas Tull, former owner of Legendary Entertainment, and Guggenheim Partners founder Mark Walter 1

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TWG Global's diverse portfolio includes Walter's stakes in the Los Angeles Lakers and the new Cadillac F1 racing team, along with a $15 billion AI-focused fund anchored by Abu Dhabi's Mubadala Capital 1

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. The firm has previously invested in partnerships with Elon Musk's xAI and Palantir to develop AI agents for enterprise customers 1

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Strategic Microsoft Partnership Drives Growth

The funding announcement follows Lambda's recent multi-billion dollar agreement with Microsoft to supply AI infrastructure using tens of thousands of Nvidia GPUs . This partnership positions Lambda as a direct competitor to CoreWeave, which previously secured a $1 billion deal with Microsoft in 2024 and a massive $12 billion contract with OpenAI in March 1

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Lambda operates AI environments called Superclusters that can be provisioned with upwards of 165,000 graphics cards, giving customers control over firewalls and encryption keys 2

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. The company also offers smaller-scale solutions, including individual instances with up to eight GPUs and 1-Click Clusters with up to 2,000 GPUs for short-term leasing 2

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Ambitious Data Center Expansion Plans

According to CEO Stephen Balaban, the funding will enable Lambda to develop "gigawatt-scale AI factories that power services used by hundreds of millions of people every day" 2

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The company plans to hire supply chain specialists, engineers, and technical professionals to accelerate its data center construction efforts 2

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Lambda has already previewed its upcoming Kansas City, Missouri facility, which will feature 24 megawatts of initial computing capacity and house 10,000 of Nvidia's top-end Blackwell Ultra graphics cards when it opens in early 2025 2

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Company Background and Valuation Trajectory

Founded in 2012, Lambda has evolved from its origins into a major AI infrastructure provider, competing directly with established players like CoreWeave while also serving hyperscaler clouds 1

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. The company previously raised a $480 million Series D in February at an estimated $2.5 billion valuation, according to Pitchbook 1

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The current $1.5 billion raise significantly exceeds earlier market speculation of hundreds of millions at a valuation north of $4 billion, though Lambda declined to comment on its current valuation 1

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. The company has also invested in AI research, developing latent thought models (LTMs) that create abstract data representations for improved performance on tasks like arithmetic calculations 2

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