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Anthropic replaces Git with Scion for AI-driven monorepo

Anthropic has developed and implemented Scion, an internal version control system designed to replace Git for its massive monorepo. This move was necessitated by the exponential growth in code changes, largely driven by AI agents, which overwhelmed Git's capacity. Scion shifts the computational burden from clients to the server, significantly reducing infrastructure costs and improving CI checkout times from minutes to seconds. While not intended as a general-purpose replacement for Git, Anthropic aims to contribute some of Scion's innovations, such as server-side RPCs, back to the broader Git ecosystem. AI

IMPACT AI-driven code generation is pushing the limits of existing developer tooling, necessitating custom infrastructure solutions.

RANK_REASON Company developed and deployed a novel internal system to replace a core piece of infrastructure (Git) due to scale issues driven by AI. [lever_c_demoted from significant: ic=1 ai=0.7]

Read on dev.to — Anthropic tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Anthropic replaces Git with Scion for AI-driven monorepo

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20 / 100
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Research
Company developed and deployed a novel internal system to replace a core piece of infrastructure (Git) due to scale issues driven by AI. [lever_c_demoted from significant: ic=1 ai=0.7]
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infra, product
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COVERAGE [1]

  1. dev.to — Anthropic tag TIER_1 English(EN) · Hüseyin Bozdemir ·

    Anthropic Scion nedir, git neden yetmedi?

    <p>Anthropic Mayıs 2026'da günde ortalama 2.500 kod değişikliği birleştiriyordu. Eylül'de bu sayı 30.000'i geçti. Kodun çoğunu artık ajanlar yazıyor ve 13 Ekim'de yayımlanan <a href="https://anthropic.com/engineering/redesigning-source-control" rel="noopener noreferrer">mühendisl…