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The Report

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Definitive Healthcare Appoints Clay Ritchey CEO

Definitive Healthcare appointed Clay Ritchey CEO and a member of its board as the healthcare intelligence company prepares an AI-powered platform launch.

Inflection AI raises $1.3B at $4B valuation for Pi personal AI assistant

Inflection AI secured $1.3B led by Microsoft, Reid Hoffman, and Bill Gates at $4B valuation to build Pi—a kind, empathetic personal AI assistant. Microsoft later acquires most of the team in landmark AI talent deal.

Anthropic raises $4B from Amazon in landmark AI safety deal

Amazon invests up to $4 billion in Anthropic, the AI safety startup behind Claude, marking one of the largest AI investments to date and reshaping the competitive landscape.

Sierra raises $175M Series B at $4.5B valuation for conversational AI platform

Sierra secures $175M Series B led by Greenoaks Capital at $4.5B valuation, just 6 months after $1B Series A, as Bret Taylor's conversational AI platform powers customer service for Fortune 500 companies.

Harvey AI raises $100M Series C at $1.5B valuation for legal AI assistant

Harvey AI secures $100M Series C led by Kleiner Perkins at $1.5B valuation, deploying AI-powered legal research and drafting tools at Allen & Overy, PwC, and 100+ law firms globally.