Larsen & Toubro has secured what Indian officials are calling the country's largest single-cluster AI infrastructure order, agreeing to build a 10,000-GPU NVIDIA B300 AI Factory in Chennai for San Francisco-based Together AI. The mega contract, valued at 100 billion to 150 billion rupees (US$1.05 billion to US$1.57 billion), lands with L&T's AI-infrastructure subsidiary LTN Compute, part of Vyoma.AI.
Anatomy of an AI factory
Vyoma's Chennai campus is designed as a gigawatt-scale site, with Phase 1 sized for 250 MW of IT load and 150 MVA of power infrastructure readiness. The B300 cluster will be connected over NVLink and paired with high-performance networking, ultra-low-latency interconnects and high-throughput parallel storage to deliver a unified stack for AI training, fine-tuning and inference. L&T Chairman & Managing Director S N Subrahmanyan called the deployment "a significant milestone in L&T's Gigawatt AI Infrastructure Mission."
Why Together AI is buying in Chennai
Together AI Co-founder and CEO Vipul Ved Prakash said the partnership brings "scale, resilience and engineering excellence" to India as the company builds out its open-source AI cloud, which crossed $1.15 billion in bookings earlier this year. The cluster gives Together AI another geographic base to serve inference and fine-tuning customers, hedging against a US-dominated compute footprint that continues to attract policy scrutiny.
India's compute ambition, meet L&T's balance sheet
The deal fits a wider pattern of Indian conglomerates lining up capital and land for AI factories after the launch of the country's IndiaAI Mission. It also extends L&T's push into technology infrastructure alongside its traditional engineering and construction businesses, echoing recent AI-infrastructure bets in the region such as Meeza's $432M Qatar data-centre financing and NVIDIA's $500B Wall Street financing alliance. For NVIDIA, it is another anchor customer for the Blackwell Ultra generation just as it prepares to ship Nemotron 3.5 Lightning and NeMo Switchyard to enterprises hungry for always-on agents.
Reporting based on coverage from Larsen & Toubro, Reuters and Business Standard.