What’s changed from Replit Agent 3 to Agent 4

Replit Agent 4 significantly advances the building experience by enhancing design, collaboration, and workflow processes. It introduces the Design Canvas, an infinite board supporting various artifact types and live previews, replacing the previous Design Mode for a more flexible and integrated design workflow. Collaboration has shifted from a fork-and-merge model to a shared project environment where team members work concurrently, assisted by the Agent in managing merges and conflicts on a real-time Kanban board. The planning and building processes have evolved from a sequential to a concurrent model, allowing tasks to be planned and executed in parallel without interfering with the main project, thus enabling a faster and more dynamic workflow. This iteration not only retains compatibility with existing projects but also introduces new capabilities like multi-artifact creation and integration with external services, reflecting a comprehensive reimagining of the building experience.