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Show HN: PolyGPT – ChatGPT, Claude, Gemini, Perplexity responses side-by-side (polygpt.app)
13 points by ncvgl 8 hours ago | hide | past | favorite | 10 comments
I built PolyGPT to solve a problem I had: constantly tab-switching between ChatGPT, Claude, and Gemini to compare their responses.

  It's a desktop app (Mac/Windows/Linux) that lets you type a prompt once and see all three AI models respond
  simultaneously in a split view. Useful for:
  - Comparing technical explanations
  - Getting multiple perspectives on code problems
  - Fact-checking answers across models

  The app is free, open source, and runs locally - your credentials stay on your machine.

  Download: https://polygpt.app
  Source: https://github.com/ncvgl/polygpt

  Would love feedback from the HN community. What other features would make this more useful?




Make a web all pls. I'm not going to install a native app from unknown source.

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> Would love feedback from the HN community. What other features would make this more useful?

A web app

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Just FYI, Open WebUI has this feature built-in.

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Does it need an API Key or it's like an 'iframe' of the web version?

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iframe - you got it - it embeds the web apps

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A better feature would be to select one pf the responses as the best one, and use it as the context for all LLMs, as if they were sent by each ome

But this would require API access instead of embedding web apps

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Now you just need to add a judge node that compares the responses, fact checks them, and outputs the best response of the three. Although this makes another issue of which model is that judge.

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Pewdiepie did something like this where all the AIs looked at each others answers and voted on the highest quality answer.

Democracy!

It worked pretty well until he updated them to know that poorly performing agents would get deleted and replaced. Then they started conspiring against him.

(19:43 for relevant part) https://youtu.be/qw4fDU18RcU

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Make a jury or blind models making a case for the best response and choose a random model to be the judge.

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Just give me a day to vibe code an interface to side by side judge judging models...

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