用 Jev 动态调节 Codex 中 GPT-6 推理档位
作者在 Codex CLI 里按步骤自动切换推理强度，常规步骤降档省 token，称整体更快且不触发缓存重建。
If this gets traction, I'll open-source it on my GitHub http://github.com/miuuyy (and post again on X to notify). I've been using it for real work in Codex CLI. It uses Codex CLI's experimental per-step settings to change reasoning effort before the next GPT-6 generation. After tool results, Jev gets the task, published reasoning/progress summaries, and the last six tool calls with bounded outputs. It picks an effort level and how long to keep it: 1, 2, 5, or 10 generations. No extra Jev calls during that window. Tool failures or new user input can trigger an earlier reassessment. This version specifically targets GPT-6 Astra. Effort changes use native Codex configuration updates that preserve the existing prompt prefix and cache. No cache rebuild penalty just for changing effort. Jev is fast enough that I don't notice the routing overhead. Lower effort on routine steps saves enough reasoning time to make the overall task faster, while using fewer tokens.