Bret Taylor's Sierra, which sells AI customer service agents, raised a $950M Series E led by Tiger and GV at a $15.8B post-money valuation, up from $10B in 2025
Artificial intelligence startup Sierra is raising nearly a billion dollars in a new funding round, CNBC has learned …
Just thinking about how Sequoia and Benchmark did the Series A in 2023, reportedly $25M on $145M post. If that reported number is true, it's another reminder that you don't always have to be contrarian to make money, you have to win the deal.
We're excited to co-lead the Series E for @SierraPlatform! In less than 3 years, @btaylor and @claybavor have led Sierra to historic progress at the AI application layer, helping the world's largest brands transform their customer experiences. Thrilled to back the team as they
Sierra is raising $950 million from new and existing investors, led by Tiger Global and GV, at a valuation of over $15 billion. We now have more than $1 billion to invest in becoming the global standard for companies wanting to transform their customer experiences with AI.
Could not be more excited for the @GVteam to join an already incredible group of investors; co-leading this round with @Tiger_Global! @btaylor and the @SierraPlatform team have built an incredible company; customer obsessed, and so talent dense! Massive shout out to my guy;
A great vote of confidence that Sierra is the leader in the market. We are so grateful to all of our customers who trust us with their own customers everyday …