Sentient has launched Arena, a real-time environment for stress-testing enterprise-grade AI agents, backed by Founders Fund, Pantera, and Franklin Templeton. Arena allows global AI developers to simulate real-world enterprise scenarios, aiding in the identification of failure causes through complete reasoning trace recordings. Initial participants include alphaXiv, Fireworks, OpenHands, and OpenRouter. The first challenge focuses on document reasoning over complex unstructured data. Julian Love of Franklin Templeton highlighted Arena's role in distinguishing production-ready capabilities. Global launch events are set to begin in San Francisco in March 2026.