---
title: "Discussion on \"I Built the Same App Twice Using Claude and GPT-5: Here’s What They Each Taught Me\" | Hashnode"
description: "Discussion on \"I Built the Same App Twice Using Claude and GPT-5: Here’s What They Each Taught Me\". I built the same web app twice using Claude and GPT-5. Same features, totally different personalities. Here’s what each AI taught me."
url: "https://hashnode.com/posts/buildingthesameapptwice/691c2a0661de30e60b3efe8e"
---

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# [I Built the Same App Twice Using Claude and GPT-5: Here’s What They Each Taught Me](https://catherinebilyeu.hashnode.dev/buildingthesameapptwice?utm_source=hashnode&utm_medium=feed)

I built the same web app twice using Claude and GPT-5. Same features, totally different personalities. Here’s what each AI taught me.

Nov 18, 2025 · 10 min read · catherinebilyeu.hashnode.dev  
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-   [#ai](https://hashnode.com/tag/ai)
-   [#gpt-5](https://hashnode.com/tag/gpt-5)
-   [#claude-code](https://hashnode.com/tag/claude-code)
-   [#web-development](https://hashnode.com/tag/web-development)
-   [#javascript](https://hashnode.com/tag/javascript)
-   [#developer-tools](https://hashnode.com/tag/developer-tools)
-   [#productivity](https://hashnode.com/tag/productivity)
-   [#machine-learning](https://hashnode.com/tag/machine-learning)
-   [#engineering](https://hashnode.com/tag/engineering)
-   [#goose](https://hashnode.com/tag/goose)

## Written by

[Catherine Bilyeu](https://hashnode.com/@catbilyeu)

@catbilyeu

  
[View profile](https://hashnode.com/@catbilyeu)

Rubber ducks save lives.. and code.

DevOps roots. Builder heart. Crafting software that feels intuitive, purposeful, and just a little bit magical.

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