Labelbox Raises $100M+ Series E at $1.25B Valuation to Advance RL and AI Agents

Labelbox secured over $100 million in Series E funding at a $1.25 billion valuation to enhance its reinforcement learning and AI agent products, Horizon and Recursion Managed Agents. The company, profitable in 2026 with 400+ customers including top US AI labs, plans to expand teams and infrastructure, leveraging compute partnerships like GroqCloud.