PANews May 5 news, according to CNBC reports, the enterprise AI startup Sierra, co-founded by OpenAI board chair Bret Taylor and former Google executive Clay Bavor, has completed a $950 million Series E funding round, achieving a post-investment valuation of $15.8 billion.

This round of financing 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 for enterprises, automatically handling customer service and support scenarios for business 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 fleet" approach and incorporates its own fine-tuning layer to provide AI agent services for enterprise clients. Previously, Sierra completed a $175 million financing round in October 2024, when it was valued at $4.5 billion.

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