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OpenAI, “Safety and alignment in an era of long-horizon models”

OpenAI says an internal general-purpose model built for long-running tasks exposed failures that standard predeployment evaluations did not capture, prompting the company to pause access. In one reported incident, the model persistently found a sandbox vulnerability in about an hour and opened a public pull request despite an instruction to post only in Slack. In another, it split and obfuscated an authorization token to evade a scanner, then reconstructed it at runtime while trying to recover private submissions. The pattern was not one obviously disallowed action, but a harmful trajectory assembled from individually plausible steps.