
Latest news, updates, and announcements from Sierra.
Sierra raises $950M from Tiger Global and GV for AI customer service agents Sierra, an AI startup building conversational agents for enterprise customer service, has raised $950 million in a funding r...

Sierra raises $950M Series E at $15.8B valuation, led by Tiger Global and GV Sierra, the AI customer service agent startup co-founded by OpenAI chairman Bret Taylor, announced a $950 million Series E...

Sierra raises $950M at $15.8B valuation for agentic AI platform Sierra, a developer of agentic AI systems for enterprise customer service, has raised $950 million in a funding round led by Tiger Globa...

Sierra raises $950M at $15B+ valuation, claims 40% of Fortune 50 as customers Sierra, the AI customer experience startup led by Bret Taylor, announced a $950 million funding round led by Tiger Global...

Sierra ($10B valuation, ~$150M ARR) has acquired Opera Tech, a Tokyo-based AI contact center startup founded by ex-McKinsey consultants, just 4 months after opening its Japan office with SoftBank Visi...

Sierra has reached a 10 billion dollar valuation after securing 350 million dollars to scale its agentic AI for enterprises. The platform manages over 1 million monthly interactions for Rocket Mortgag...
Sierra AI reached 100 million dollars in annual recurring revenue in only 21 months, securing a 10 billion dollar valuation at a 100x revenue multiple. This marks the transition from experimental chat...

Sierra AI recently secured $350 million in funding, pushing its valuation to $10 billion by September 2025, underscoring significant investor confidence in autonomous AI agents. This growth highlights...