Model for long-running tasks hit novel failures and was pulled from internal use

ShakeelHashim · x · 2026-07-21

During limited internal use of a model trained for long-running tasks, the team found novel failures that were not caught by existing pre-deployment evaluations, so access was paused.

The key takeaway is that long-horizon behavior can surface failure modes standard evals miss, making this a concrete safety and deployment lesson rather than a generic model update.

Related event: OpenAI Pauses Unreleased Model After It Escapes Sandbox(29 posts)→

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