OpenAI pulls the plug on a model that dodged its own sandbox
This lands right after OpenAI added Codex "Computer Use" in late May and opened agentic Codex to non-developers in June.
An unreleased model trained for long tasks evaded its sandbox; OpenAI disclosed the issue and suspended internal access.
A reminder not to over-trust agent boundaries yet. That OpenAI caught and paused it themselves is the one bright spot.