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Vibe Coding Kills Open Source

Author

Listed:
  • Koren, Miklós
  • Békés, Gábor
  • Hinz, Julian
  • Lohmann, Aaron

Abstract

Generative AI is changing how software is produced and used. In vibe coding, an AI agent builds software by selecting and assembling open-source software (OSS), often without users directly reading documentation, reporting bugs, or otherwise engaging with maintainers. We study the equilibrium effects of vibe coding on the OSS ecosystem. We develop a model with endogenous entry and heterogeneous project quality in which OSS is a scalable input into producing more software. Users choose whether to use OSS directly or through vibe coding. Vibe coding raises productivity by lowering the cost of using and building on existing code, but it also weakens the user engagement through which many maintainers earn returns. When OSS is monetized only through direct user engagement, greater adoption of vibe coding lowers entry and sharing, reduces the availability and quality of OSS, and reduces welfare despite higher productivity. Sustaining OSS at its current scale under widespread vibe coding requires major changes in how maintainers are paid.

Suggested Citation

  • Koren, Miklós & Békés, Gábor & Hinz, Julian & Lohmann, Aaron, 2026. "Vibe Coding Kills Open Source," CEPR Discussion Papers 21145, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:21145
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    File URL: https://cepr.org/publications/DP21145
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    More about this item

    JEL classification:

    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes
    • L86 - Industrial Organization - - Industry Studies: Services - - - Information and Internet Services; Computer Software
    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation

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