Agent-Native GTM Is Now a Stack Primitive — The April 2026 Shift

In a 48-hour window this week, Zed shipped Parallel Agents, OpenAI shipped Workspace Agents in ChatGPT, and Microsoft shipped Teams Agents — four agent launches that redefined the founder GTM stack from 'tools' to 'orchestrators.' The operators compounding right now run a 4-layer agent stack (spec → orchestrator → tools → verification), not a 12-tab tool-switching loop, and are shipping ~3x faster on every repeat task. If you're still manually toggling between Notion, Linear, and ChatGPT, you're already running at one-third the velocity of agent-native peers — and the gap is widening weekly.