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flag AI startup Sierra, co-founded by Bret Taylor, reaches a $4.5B valuation after raising $175M in funding.

flag Sierra, an AI startup co-founded by Bret Taylor, former Salesforce co-CEO, has achieved a $4.5 billion valuation after raising $175 million in funding led by Greenoaks Capital. flag Launched less than a year ago, Sierra specializes in AI-driven customer service chatbots for enterprises like WeightWatchers. flag The funding underscores heightened investor interest in AI applications, particularly as the market shifts toward revenue-generating solutions.

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