PolyGPT – Compare ChatGPT, Claude, and Gemini side-by-side

Summary: PolyGPT is a free, open-source desktop app that queries multiple AI models simultaneously and displays their responses side-by-side in real-time. It runs locally on Mac, Windows, and Linux without requiring logins, enabling private and efficient comparison of ChatGPT, Claude, and Gemini outputs.

What it does

PolyGPT lets users type a single query and receive answers from ChatGPT, Claude, Gemini, and one additional model simultaneously. It displays all responses side-by-side for direct comparison within a local Electron-based app.

Who it's for

It is designed for users who need to compare AI model outputs quickly, such as developers, researchers, and problem solvers.

Why it matters

It eliminates the need to switch between multiple AI service tabs, streamlining workflows and preserving privacy by running entirely on the user’s machine.