OpenAI has issued multiple global and banked resets for Codex usage limits in late September 2026, including one on September 26 and a banked reset credit tied to DevDay announcements on September 29. These actions respond to developer reports of quota exhaustion on paid plans, model efficiency gains from newer large language models like GPT-6 variants, and efforts to boost engagement amid competition from other AI coding tools. Resets typically refresh both five-hour rolling windows and weekly caps without altering base allowances, often announced via official channels around launches or milestones. Traders should monitor upcoming product updates or subscription changes, as these have repeatedly triggered early resets in recent weeks.