AI search startup Perplexity has finalized a major three-year, $750 million cloud infrastructure agreement with Microsoft. The deal, announced in late January 2026, will see Perplexity utilize Microsoft's Azure cloud services, specifically gaining access to advanced AI models through the Azure Foundry service.
The agreement provides Perplexity with access to frontier AI models from leading developers, including OpenAI, Anthropic, and xAI, all hosted within Microsoft's platform. A Perplexity spokesperson stated, "We are excited to partner with Microsoft for access to frontier models from X, OpenAI and Anthropic," highlighting the strategic value of deploying a broad array of AI models for its search engine and commerce features.
This significant partnership was struck while Perplexity remains embroiled in a legal dispute with its long-standing cloud partner, Amazon.com Inc. The conflict began in November when Amazon filed a lawsuit against Perplexity, alleging that the startup's "Comet" shopping agent tool violated Amazon's marketplace terms of service by enabling users to shop directly on Amazon's platform. Perplexity retaliated by framing Amazon's actions as "bullying" and a violation of user choice.
Despite the new Microsoft deal, Perplexity insists it will maintain its expenditure with Amazon Web Services (AWS), which has been its primary cloud provider. A spokesperson noted, "AWS continues to be Perplexity’s preferred cloud infrastructure provider, and we look forward to announcing further expansions of that partnership in the upcoming weeks." The company's CEO, Aravind Srinivas, had previously committed the company to being "all-in" on AWS, which had identified Perplexity as a premier AI customer.
The $750 million commitment represents one of the largest cloud deals for an AI startup in 2026 and locks Perplexity into Azure infrastructure through 2029. The deal underscores a growing industry trend where major firms diversify their cloud dependencies across multiple providers like Microsoft, Amazon, and Google to access exclusive features and reduce reliance on any single vendor.
The announcement came during a challenging period for Microsoft's cloud business. On January 29, 2026, Microsoft's stock (MSFT) dropped nearly 10% after the company reported slower-than-expected Azure cloud growth and provided softer margin guidance for its second fiscal quarter of 2026. Wall Street analysts subsequently cut price targets on the stock, though it maintains a Strong Buy consensus rating.
Perplexity, valued at roughly $20 billion as of September 2025, competes with tech giants like Alphabet's Google and OpenAI in the AI-powered search space. The company has raised less capital than rivals like OpenAI and Anthropic, making this large-scale infrastructure deal a critical milestone for its growth and operational scaling.
