Restack is a sophisticated backend framework designed for building enterprise-grade AI agents that maintain accuracy and reliability. The platform addresses the critical issue of AI agent reliability, where general-purpose LLMs achieve only 51% accuracy while fine-tuned agents reach 99.7% accuracy. With event-driven architecture and long-running workflow support, Restack enables developers to build AI agents that can handle complex, multi-step processes with built-in retry policies, task queues, and cron scheduling.