A developer posted a 270-point HN thread claiming 20-50x productivity gains by moving AI out of the editor and into a two-agent browser workflow. The claim is bold, but the architecture is simple: one agent builds, one agent reviews, and both operate on full file context instead of cursor snippets.
The interesting part is not the speed number. It is the orchestration shape and what it reveals about context boundaries, diff handoffs, and failure modes when you separate reasoning from the IDE.
The Two-Agent Loop
The workflow uses two browser tabs (ChatGPT, Claude, or similar) and a terminal. No plugins, no LSP integration, no inline completions.
Agent 1: Builder
