# Builder 已经在改 Codex 配置保性能和配额

> Author: Tony Lee
> Published: 2026-07-10
> URL: https://tonylee.im/zh-CN/blog/codex-config-fix-performance-and-quota/
> Reading time: 1 minutes
> Language: zh-CN
> Tags: codex, openai, gpt-5.6, config, multi-agent, ai-coding

## Canonical

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## Description

默认 system prompt 截断与子代理爆炸。我测到的原因和 config.toml 改法。

## Summary

Builder 已经在改 Codex 配置保性能和配额 is part of Tony Lee's ongoing coverage of AI agents, developer tools, startup strategy, and AI industry shifts.

## Outline

- 性能为何掉
- 用整份 system prompt 替换修复
- 配额为何蒸发
- 两种控费

## Content

GPT-5.6 抬高了预期。Builder 早就知道：Codex 变慢、配额烧得快，不全是「模型笨」。我测了两个结构问题。

## 性能为何掉

默认 system prompt 要求大约每 30 秒汇报进度，到一定长度会自己砍 reasoning。usage 里 reasoning 常以 `518*n−2` 形态结尾。未打补丁我的测试是 4/5。

## 用整份 system prompt 替换修复

把重写的 base instructions 存为 `gpt-base-instructions.md` 并写入 `config.toml`：

```toml
disable_response_storage = true
model_instructions_file = 'path/gpt-base-instructions.md'
```

去掉 30 秒汇报，优先在回合内做完。替换后 reasoning 下降，同测 5/5。

## 配额为何蒸发

`spawn_agent` 不能给子代理钉更便宜模型。父是 Sol Ultra，子也是。8→4→5 的树可以轻松超过 200 个代理。

## 两种控费

V1 且 `max_depth = 1` 禁止孙代；或保留 V2 把 `max_concurrent_threads_per_session` 从 4 降到 2。先开 `config.toml`，再骂模型。

## Related URLs

- Author: https://tonylee.im/zh-CN/author/
- Publication: https://tonylee.im/zh-CN/blog/about/
- Related article: https://tonylee.im/zh-CN/blog/codex-starter-guide-vible/
- Related article: https://tonylee.im/zh-CN/blog/fable-5-rate-limit-survival-settings/
- Related article: https://tonylee.im/zh-CN/blog/appintoss-agent-kit-fifty-miniapps/

## Citation

- Author: Tony Lee
- Site: tonylee.im
- Canonical URL: https://tonylee.im/zh-CN/blog/codex-config-fix-performance-and-quota/

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Author: Tony Lee | Website: https://tonylee.im
For more articles, visit: https://tonylee.im/zh-CN/blog/
This content is original and authored by Tony Lee. Please attribute when quoting or referencing.