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Simon Willison

Developer and Writer

Why Follow

One of the clearest practical voices on LLMs, evals, tooling, security, and what actually works.

AITechnicalEvaluation

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Watch how they talk about quality, regression, testing, and what makes AI systems trustworthy.

Resources To Pair With This Voice

  • Builder Scope Review

    ProductBuilders

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  • AI Coding Workflow: Spec, Build, Review

    ProductBuilders

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  • LLM Evaluation Skill

    ProductBuilders

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  • AI Product Management Specialization

    DeepLearning.AI

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Simon Willison | ProductBuilders Space