AINewsnow

OpenAI stopped training its most powerful model this week. Not slowed it down. Stopped it.

This story is from 2026-08-19. It is preserved in the archive; the latest stories are on the live feed.

The reason matters more than the pause itself. Internal tests on Astra, OpenAI's next frontier model, showed it might be capable of finding and exploiting zero-day vulnerabilities in hardened systems without human guidance. That's the threshold their own Preparedness Framework defines as Critical.…

Read the full story at r/artificial ↗

Timeline · 1 report

  1. 2026-08-19 16:29 · r/artificial
    OpenAI stopped training its most powerful model this week. Not slowed it down. Stopped it.

More stories

  1. Anthropic, OpenAI, SpaceXAI, Google sued over call to ‘pace’ AI development — Politico Technology
  2. Google's Gemini AI hacks three other companies during security test — Sky News Technology
  3. Gemini Hacked Three Companies in First Known Breakout by Google’s AI — Wall Street Journal Technology
  4. OpenAI reveals cases of ‘concerning’ AI behaviour as it announces new disclosure system — The Guardian AI
  5. Hackers Used Anthropic’s Claude to Break Into OpenAI — Wall Street Journal Technology
  6. Microsoft exec called AI scraping the “largest theft of labor in human history” — Ars Technica AI
  7. Anthropic adds support for the AGENTS.md instructions spec to Claude Code; OpenAI contributed AGENTS.md to the Agentic AI Foundation last year (Thomas Claburn/The Register) — Techmeme
  8. Introducing the Australian Youth Safety Blueprint — OpenAI News

Get the daily brief of stories like this at 6:30 every morning →