Sierra acquires Takeoff, which develops “long-horizon” agents, for an undisclosed sum; founded in 2025, Takeoff neared $10M in annualized revenue in early July
In 2020, 22-year-old Aakash Thumaty was a product manager at Salesforce when he wrote an essay …
Sierra acquires Takeoff, which develops “long-horizon” agents, for an undisclosed sum; founded in 2025, Takeoff neared $10M in annualized revenue in early July
In 2020, 22-year-old Aakash Thumaty was a product manager at Salesforce when he wrote an essay …
A profile of Rachel Whetstone, who has led comms for Google, Meta, Uber, Netflix, and now Sierra, as her husband Steve Hilton runs for governor of California
Steve Hilton, the conservative British political operator running for governor of California, launched his longshot campaign in April 2025 …
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
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 …
Q&A with Bret Taylor, CEO of Sierra and chairman of OpenAI, on Sierra's AI customer support agents, AGI, Sam Altman's comments on the AI bubble, and more
Welcome to Decoder. This is Alex Heath. For my final episode as your Thursday guest host, I recently sat down with Bret Taylor …
Bret Taylor's Sierra raised $350M at a $10B valuation, up from $4.5B in October 2024, and says its AI customer service agents are used by “hundreds of millions”
When I was considering joining just over 6 months ago … Florian Dahlhausen : Excited to announce that Sierra has raised $350M additional capital at a valuation of $10B, led by Greenoaks. … Alexandra J...
Source: Sierra, which builds AI customer service agents, nears a $350M raise at a $10B valuation, up from $4.5B in October 2024, and is set to top $100M in ARR
Ina Fried / Axios :
Sierra, an AI startup co-founded by OpenAI board chairman and ex-Salesforce co-CEO Bret Taylor, raised $175M, valuing it at $4.5B, up from ~$1B in February 2024
Sources: Sierra, an AI agent startup co-founded by former Salesforce co-CEO Bret Taylor, is raising hundreds of millions led by Greenoaks at a $4B+ valuation
Millions of people around the world have chatted with AI agents powered by Sierra … Ashley Capoot / CNBC : OpenAI Chair Bret Taylor talks AI agents, regulation and the technology's current boom Sanjan...