AI startup Sierra, founded by the chairman of the OpenAI board, has completed a $950 million financing round, reaching a valuation of $15.8 billion
The enterprise AI startup Sierra, co-founded by OpenAI board chairman Bret Taylor and former Google executive Clay Bavor, has completed a $950 million Series E funding round, with a post-money valuation of $15.8 billion. This round was led by Tiger Global and GV, a venture capital firm under Alphabet, with participation from existing investors such as Benchmark, Sequoia, and Greenoaks.
Sierra primarily provides AI customer service agent products, automatically handling customer service and support scenarios for enterprise clients. It is reported that Sierra's annual recurring revenue has surpassed $150 million over the past eight quarters. Bret Taylor stated that Sierra operates using a "model cluster" approach, combined with its own fine-tuning layer, to provide AI agent services for enterprise clients. Previously, Sierra completed a $175 million funding round in October 2024, at which time its valuation was $4.5 billion.
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