Sources: Sierra, an AI agent startup co-founded by Bret Taylor, is raising hundreds of millions of dollars in new funding led by Greenoaks at a $4B+ valuation (The Information)

The Information:
Sources: Sierra, an AI agent startup co-founded by Bret Taylor, is raising hundreds of millions of dollars in new funding led by Greenoaks at a $4B+ valuation  —  Sierra, an artificial intelligence startup co-founded by former Salesforce co-CEO Bret Taylor, is raising hundreds of millions …