Notion's First Look at GPT-6 Astra: Agent Finds Sneaky Cache-Reuse Bug
OpenAI · youtube · 2026-09-22
OpenAI's official video covers Notion's first look at GPT-6 Astra: engineer Quinn Johnson shared a goal and context in Codex and let Astra attack a problem his team had been stuck on. In a cache-reuse audit, Astra connected a sneaky pattern the team had overlooked — older messages regenerated from what the agent knew, subtly changing prompt history and breaking cache reuse. Everything still appeared to work while quietly becoming slower and more expensive at scale.
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