OpenAI halts organized attempt to extract protected reasoning

OpenAI describes the activity as hitting its terms of use: using one model's outputs or reasoning on an organized, unauthorized basis to train, reproduce, or improve another model — what the company calls adversarial distillation, as opposed to the legitimate practice of distilling knowledge from a large model into a smaller one.

The campaign's scale grew over July. What began as a small amount of activity on July 1 expanded, and OpenAI says it later found related prompt patterns across a cluster of users. By July 28, the company says it had blocked the activity completely.

OpenAI says it is continuing countermeasures and investigation. Whether the defenses hold will likely depend on how quickly such patterns can be detected and shared across the industry, which is why OpenAI says it is passing findings to partners through the Frontier Model Forum.