Bret Taylor’s Sierra buys YC-backed AI startup Fragment
Bret Taylor's $10B startup buys French AI workflow startup Fragment for its third acquisition
Sierra, the customer service agent startup co-founded by Bret Taylor (who also chairs OpenAI's board) and Google alum Clay Bavor, announced its acquisition of YC-backed Fragment on Thursday. Fragment is a French startup that helps businesses integrate AI into their workflows. This marks Sierra's third public acquisition, following the purchases of Japan-based Opera Tech and voice agent company Receptive AI, both announced in late March. The deal's financial terms were not disclosed, but PitchBook estimates Fragment raised around $2 million through its seed round.
Fragment's co-founders, Olivier Moindrot and Guillaume Genthial, will join Sierra's team. In a blog post, Taylor and Bavor said the duo will bring "valuable strength" to Sierra's agent development efforts in France. Sierra, which claims Casper, Clear, and Brex as customers, has raised over $630 million in funding from investors including Sequoia and Benchmark, giving it a $10 billion valuation. This acquisition underscores Sierra's aggressive expansion strategy in the competitive AI customer service space.
- Sierra acquired YC-backed Fragment, its third public acquisition in 2024
- Fragment co-founders Olivier Moindrot and Guillaume Genthial will join Sierra
- Sierra is valued at $10B with $630M+ funding from Sequoia and Benchmark
Why It Matters
Sierra's acquisition spree signals rapid consolidation in enterprise AI, targeting workflow integration and European talent expansion.