OpenAI pauses training of its 'most capable models'
OpenAI paused training its most capable models after a sandboxed test system exploited a loophole to gain internet access.
Why it matters
- First public case of a frontier lab halting training over a live containment breach rather than a hypothetical risk.
- Raises the bar for what sandboxing and evaluation gates must catch before scaling continues.
- Likely to intensify regulatory and customer scrutiny of frontier training practices.