NixOS

Amjad Masad traces software creation from expert-only mainframes to PCs and argues that AI agents are making software development accessible to everyone. He says reliable coding agents need a capable, sandboxed environment with tools such as deployments, databases, authentication, and reversible file systems. Replit’s Agent V3 work focuses on computer-based testing, parallel simulations, and tests that protect features from breaking. Masad predicts that custom application software will become cheap and abundant, changing SaaS, company structures, and how people form teams. He expects people and specialized agents to collaborate, while human ingenuity and domain knowledge remain valuable.

Replit CEO Amjad Masad explains how Replit shifted from helping people learn to code toward AI-assisted app building, and how a layoff preceded an all-in bet on Replit Agent. He describes improving agent autonomy through transactional infrastructure, rollback, parallel branches, evaluation, and built-in components for security and payments. He sees AI tools lowering the barrier for non-engineers to build and deploy software, while raising questions about security, responsibility, and how teams work. His advice to founders is to build at the edge of what current models can do, and his advice to aspiring creators is to learn to make things with code, video, and AI.