Google Open-Sources the Elephant-Goldfish Model Plugin Its Engineers Use to Catch AI Coding Mistakes

Written By
JP
James Patterson
Nov 5, 2026

Google has open-sourced the Elephant-Goldfish Model plugin, an internal tool that makes an AI coding agent write and defend a design document before it touches any code. The plugin hands that document to fresh AI sessions that have never seen the design conversation and tells them to find what is wrong with it.

JP

James Patterson

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