The raise gives Sierra more than $1 billion to work with — capital the company says it will use to become the "global standard" for AI-powered customer experiences.

Sierra's $950 million Series E funding round was led by Tiger and Google's GV, with participation from Benchmark, Sequoia, Greenoaks and others.

The raise gives Sierra more than $1 billion to work with — capital the company says it will use to become the "global standard" for AI-powered customer experiences.

The Chinese AI lab came to prominence in early 2025 after launching a large language model that trained on a fraction of the compute power and at a fraction of the cost of the big…

Moonshot's annualized recurring revenue topped $200 million in April, driven by rapid growth in paid subscriptions and API usage.