Sierra, the enterprise artificial intelligence firm co-founded by industry veteran Bret Taylor, has secured $950 million in a new funding round led by Tiger Global and GV. The capital injection brings the startup’s valuation to more than $15 billion, underscoring the rapid investor appetite for companies specializing in AI-driven customer experience platforms. This financial milestone follows a period of aggressive growth, with the company seeing its annual recurring revenue jump from $100 million to $150 million in only a few months.

The startup has quickly gained a foothold among the world’s largest companies, with over 40% of the Fortune 50 currently integrating its technology into their operations. Sierra’s AI agents are being deployed to handle high-stakes, high-volume tasks such as processing insurance claims, managing complex mortgage refinancings, and streamlining logistical returns. By automating these intricate workflows, the company aims to provide a clear financial incentive for enterprises looking to justify the high costs typically associated with implementing advanced AI infrastructure.

Looking toward the future, Sierra is broadening its capabilities with products like Ghostwriter, a platform that allows users to create and launch custom agents through simple natural language prompts. This strategic direction aligns with a broader industry shift toward autonomous software, moving away from traditional, manually navigated enterprise tools. By prioritizing agentic systems that can independently navigate business complexities, the company seeks to liberate human employees from administrative burdens, allowing them to focus on high-level strategic initiatives.