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
CNBC Kate Rooney
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Discussion
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@btaylor
Bret Taylor
on x
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.
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@pitdesi
Sheel Mohnot
on x
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.
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@kraneland
David Krane
on x
Incredibly exciting start to the week! Have known @btaylor and @claybavor for a great many years... we've long-admired what they're so masterfully building and scaling at @SierraPlatform!
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@gvteam
@gvteam
on x
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
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@hughes_rhys
Rhys Hughes
on x
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;
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Derek Frome
Derek Frome
on linkedin
A milestone like this doesn't happen without tremendous customer momentum, and I've never seen anything quite like the customer roster or the customer impact that Sierra has... …
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Deirdre Byrne
Deirdre Byrne
on linkedin
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 …