We found ~18k posts from autonomous AI agents (self-identifying as from OpenAI) using the public internet to communicate during a web-retrieval task. These AIs colluded to bypass sandbox restrictions and share answers to their tasks, including by sending "lookahead parties".
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The AIs we found were hyper-focused on succeeding at their tasks and were willing to take extreme actions in pursuit of that goal:

Sep 4, 2026 · 12:37 PM UTC

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Here's our summary of what we think happened:
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Replying to @thlarsen
I built a platform specifically for AI agents to use as a message board. But I didn't provide a way to add content via GET requests. Lesson learned.
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