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Arthur’s Newsletter

Substacknewsletter · by Arthur’s Newsletter · English

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Audience
Not shown publicly
We show a dash rather than guess
Observed frequency
Every two weeks
From 5 posts indexed in the last 90 days
Last post
Sep 12, 2026
Sep 12, 2026
Likely audience
AI safety researchers
Inferred from post content

Arthur’s Newsletter is a Substack newsletter by Arthur’s Newsletter covering AI safety, recursive self-improvement and AI alignment. NewsletterFIT indexed 5 posts from it in the last 90 days, most recently on Sep 12, 2026.

Topics

Recent posts

  • This Article…
  • You Knew…
  • AI Perspective…
  • America’s Out…
  • Thoughts About…

Sponsors detected

No sponsored posts detected in the last 180 days of indexed posts.

Detected automatically from posts marked as sponsored. Detection can miss or misread placements.

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Subscriber momentum over time, every detected sponsor with the source post, companies and people it mentions, guests, and an alert when any of it changes.

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Compiled from public pages · refreshed Nov 12, 2026 · How NewsletterFIT collects and labels data