# OpenAI's Plugin Turns Claude Into a Second-Guessed Assistant - slug: openais-plugin-turns-claude-into-a-second-guessed-assistant - date: 2026-04-02 - category: Agentics On March 30, OpenAI published a plugin inside Anthropic's Claude Code. The next day, Claude Code's source leaked. The timing tells you everything about who controls the interface layer. ---