LangChain held its first industry conference, Interrupt 2025, in San Francisco with 800 attendees from companies like Cisco, Uber, Replit, LinkedIn, and JPMorgan. Key themes included agent engineering as a new discipline, model optionality (LangChain downloaded 70M+ times last month), LangGraph for reliable agent orchestration, and AI observability as a distinct need from traditional SRE tooling. Major product launches included: LangGraph Platform going GA with cloud/hybrid/self-hosted deployment options, an Open Agent Platform no-code agent builder, LangGraph Studio v2 with local browser support and trace debugging, LangGraph Pre-Builts for common agent architectures, LangSmith agent-specific metrics, an open-source evals catalog, and a private preview of LLM-as-Judge calibration with human feedback.