Overview
- Sierra, which announced the round Monday, secured $950 million at a $15.8 billion post‑money valuation led by Tiger Global and GV.
- Benchmark, Sequoia, Greenoaks and other existing investors joined the deal, according to CNBC.
- CEO Bret Taylor said the cash will fund faster expansion in a crowded market as the company stays private before a later IPO.
- Sierra sells AI agents for calls and chats that sit on models from OpenAI and Anthropic with proprietary layers in a “constellation of models,” a setup Taylor says cuts hold times and supports many languages.
- The company reported reaching $150 million in annual recurring revenue in eight quarters and serving more than 40% of the Fortune 50, with customers such as Prudential, Cigna, Blue Cross Blue Shield and Rocket Mortgage; StartupHub.ai also cites rapid rollouts at Nordstrom and strong resolution rates at Singtel.