Dify AI is an open-source LLM application development platform that provides everything needed to build, test, and deploy production AI applications — RAG pipelines, prompt orchestration, agent workflows, model management, and monitoring — in a single integrated environment. It supports all major LLM providers and offers both a visual workflow builder for non-technical users and a full API for developers. Companies building internal AI tools and customer-facing AI products use Dify to ship applications faster while maintaining full control over their AI infrastructure and data.