Codex adds an instant_interrupt flag so new user input preempts a streaming response or a running code cell
GitHub·medium signal
PR #48135 adds the flag, off by default. It lets long code-mode exec and wait calls yield their cell IDs when the user types something, without stopping the cells, and a later wait call collects the results. PR #48141 extends preemption to request setup, streaming and retry backoff. It also resets the WebSocket, resends full history, and keeps finished commentary while dropping unfinished assistant text. Both merged 25 Sep.