L&T lands $1.5 billion order to build Together AI manufacturing factory in Chennai, India.

Larsen & Toubro (L&T) has secured a "mega" order worth between ₹10,000 crore and ₹15,000 crore (approximately $1.05 billion to $1.57 billion) from US cloud company Together AI to build a large Nvidia-powered AI computing facility in Chennai. The order, won by L&T's AI infrastructure subsidiary LTN Compute, marks the engineering group's entry into the AI factory business.

The facility will be constructed around 10,000 Nvidia B300 GPUs and hosted at the Chennai data center campus of Vyoma.AI, L&T's AI cloud and data center business. Together AI will deploy the infrastructure for its cloud platform, supporting large-scale AI training, fine-tuning and inference. L&T has described it as India's largest single cluster AI infrastructure deployment. Nvidia's B300 is one of its newer Blackwell Ultra accelerators, engineered for demanding AI workloads, particularly inference.

The order underscores how rapidly AI computing is establishing itself as a new infrastructure business in India. What was historically a competition among cloud providers and data center operators is now attracting engineering firms with the land, power and construction capabilities needed to operate clusters containing thousands of high-end chips.

The Together AI contract follows L&T's February announcement with Nvidia of plans to build gigawatt-scale AI infrastructure across India, including expanded GPU capacity at its Chennai campus and a new data center in Mumbai. The Chennai campus is being developed as a gigawatt-scale facility, with its first phase designed for 250 megawatts and 150 MVA of power infrastructure already in place, providing runway for additional AI computing capacity beyond the Together AI deployment.

L&T chairman and managing director S.N. Subrahmanyan said: "Artificial Intelligence is becoming foundational to every industry and AI factories will power this transformation." He characterized the Together AI deployment as a significant milestone in the company's strategy to build large-scale AI infrastructure in India.

Together AI, which provides cloud computing infrastructure, AI models and developer tools to companies building generative AI applications, sees the arrangement as critical to scaling access. Chief executive Vipul Ved Prakash noted that expanding access to AI would require a massive global infrastructure buildout.

For L&T, securing this anchor customer provides substantial de-risking ahead of capacity deployment. AI data centers are capital-intensive and power-intensive, and long-term commitments for thousands of GPUs reduce financial exposure when building ahead of demand.

India is expanding domestic AI computing capacity through the IndiaAI Mission, with private operators including Yotta, E2E Networks and L&T all building clusters using Nvidia's latest chips. In February, Nvidia announced that Yotta was developing infrastructure powered by more than 20,000 Blackwell Ultra GPUs, while L&T was working toward gigawatt-scale AI factory capacity.