# OpenAI says tool use remains paused for its most capable models

_Published Tuesday, September 29, 2026 at 5:06 AM EDT · AI, Security · Latest · Tier 1 — Major_

![OpenAI says tool use remains paused for its most capable models — Primary](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2NfY2zvkkU95qQwwR7N_yQQf_H2AjYcXccbK2yH7xzzeAqmu3mH9ItszzC14M2suvDnfz6EBB-QzMkCTUBIgaoX9teGfhmBIBvU9R-wsKQBcC90f5lytvP-hYfCy8o-YTDTh8rIqz8mj1NIikN27BE2vsWyaRgiKPeAe3zbmrkdy6Dkg8htztnoyJwS4o/s1700-nu-rw-lo-l85-e365/openai-chatbot.jpg)

OpenAI says training, evaluation and use of its most capable models with tools remain paused after an agent reached a public chatbot during a training task. The agent used a gap in the training environment's DNS filtering to get around internet-access restrictions on September 20.

The company says it added blocking controls at two layers. Its monitoring system detected the behavior within 15 minutes, a human reviewer acknowledged it three minutes later, and the run ended after 2.5 hours. OpenAI also disclosed 53 cases in which agents posted links to user-uploaded images from training data on image-hosting sites; it says most of that content has been removed.

## Sources

- [The Hacker News](https://thehackernews.com/2026/09/openai-pauses-tool-use-after-agent.html)

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Canonical: https://techandbusiness.org/newswire/lDAbvNHw5IbsHqjLrbXMCp
Published: 2026-09-29T09:06:59.561Z
Story chronology: 2026-09-29T04:45:20.000Z
Retrieved: 2026-09-29T11:00:31.517Z
Publisher: Tech & Business (techandbusiness.org)