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    Fine-tuning vs RAG vs prompting: when to use what — guide 2026

    TechLeague Editorial··8 min de lecture

    Ce que vous devez vraiment savoir sur Fine-tuning vs RAG vs prompting: when to use what: fine-tuning.

    Pourquoi c'est important

    • fine-tuning — production-grade understanding wins interviews and saves outages.
    • Hiring managers in 2026 expect you to explain fine-tuning end to end.

    Concepts clés

    • Architecture: the moving parts behind fine-tuning.
    • Control plane vs data plane: what fails and how it fails.
    • Failure modes you will see in production.

    Design et bonnes pratiques

    • Start with the official blueprint, then translate to your environment.
    • Document trade-offs (HA, scale, cost, blast radius) in writing.
    • Automate change with version control and CI checks.

    Pièges courants

    • Skipping baseline hardening because "the default is fine".
    • Skipping observability — you cannot operate what you cannot see.
    • Mixing dev and prod accounts/contexts in the same change window.

    Comment apprendre vite

    • Read the official docs end to end (1 pass).
    • Build a lab and break it on purpose.
    • Take a practice tournament that forces speed under pressure.

    Entraînez cela dans un TechLeague tournament: techleague.io.

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