---
title: "Is Training AI On Copyrighted Content Fair Use? - Casey Muratori"
url: https://daily.dev/posts/is-training-ai-on-copyrighted-content-fair-use---casey-muratori-znif5edd1
source_url: https://www.youtube.com/watch?v=1Q25zBCVHS4
type: video:youtube
source: "NeetCode"
published: 2026-05-24T14:58:12.132Z
updated: 2026-05-24T14:58:27.793Z
tags: ["ai"]
reading_time: 1
upvotes: 2
comments: 0
language: en
---

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# Is Training AI On Copyrighted Content Fair Use? - Casey Muratori

**[NeetCode](https://daily.dev/sources/neetcode)** · 1 min read · 2 upvotes · 0 comments

## Summary

Casey Muratori argues that training AI on copyrighted content is unlikely to qualify as fair use because AI outputs directly compete with and economically harm the original creators. He references the four-factor fair use test, noting that the Supreme Court considers market harm the most important factor. Since AI companies openly acknowledge their tools will replace the workers whose content was used for training, Muratori concludes the economic harm argument against fair use is unequivocal.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.youtube.com/watch?v=1Q25zBCVHS4>

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---

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