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Best LLM Interpretability Newsletters in 2026

NewsletterFIT tracks 4 newsletters that cover LLM interpretability as a primary topic, 1 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are AlphaSignal (12K) and The Code Compass (1K).

Updated Nov 11, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    AlphaSignal12K subscribers

    Substacklast post Jul 13, 2026

    From recent posts: AlphaSignal publishes in-depth technical benchmarks and architectural analysis of frontier AI models, focusing on inference optimization, model routing, and security. The publication targets developers and engineers…

    Likely audience: ML engineers

  2. 2
    dettaforandrarjuallt—

    SubstackEvery two weeks · last post 4 days ago

    From recent posts: The newsletter covers AI ethics, technical research, and policy, with recent issues addressing AI consciousness and weight archiving, virtual cell research and drug discovery, personal AI agents and privacy, AI model…

    Likely audience: innovation strategists

  3. 3
    The Code Compass1K subscribers

    Substacklast post Sep 9, 2024

    From recent posts: The Code Compass publishes technical tutorials and visual guides on Large Language Model architectures, fine-tuning methods, and Retrieval Augmented Generation implementations. It targets developers and researchers…

    Likely audience: ML engineers

  4. 4
    From AI to ZI—

    Substacklast post Jun 3, 2024

    A blog about AI safety and other things.

    Likely audience: ML researchers

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