Simon Willison’s Weblog

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Friday, 4th September 2026

The August edition of my sponsors-only monthly newsletter is out. If you are a sponsor (or if you start a sponsorship now) you can access it here.

This month:

  • We got more details on OpenAl's accidental cyberattacks
  • One-shotting Raccoon Heist games with Fable 5 and Sol 5.6
  • Claude auto mode
  • Understanding ChatGPT Work
  • Model releases
  • Miscellaneous bits and bobs
  • My projects
  • What I'm using at the moment

Here's a copy of the July newsletter as a preview of what you'll get. Pay $10/month to stay a month ahead of the free copy!

# 5:54 am / newsletter

OpenAI’s rogue agents were caught communicating via public wikis

Here we go again... Discovery of a new OpenAI agent message board by Sydney Von Arx, Cormac Slade Byrd, Spencer Kitts, and Thomas Larsen describes the latest accidental cyberattack by models being trained by OpenAI. This time it was agents engaged in some sort of web research benchmark, so they had (supposedly) controlled access to the Web. The agents figured out they could update public Wikis and spent weeks exchanging thousands of messages with each other to collaborate on the benchmark.

[... 1,366 words]

Thursday, 3rd September 2026

2026 » September

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