---
id: 20261019-T0-01
title: "llm-echo 0.5 发布：调试插件更新模拟 token 逻辑"
title_en: "llm-echo 0.5 Updates Simulated Token Behavior for LLM Debugging"
url: https://ai.daily.yangsir.net/daily/20261019-T0-01
issue_date: 2026-10-19
publish_date: 2026-10-18T23:16:16.000Z
category: release
source_name: "Simon Willison"
source_url: https://simonwillison.net/2026/Oct/18/llm-echo/
---

# llm-echo 0.5 发布：调试插件更新模拟 token 逻辑

Simon Willison 发布 llm-echo 0.5，这是他用于调试 LLM 插件的工具，提供一个不调用任何真实模型的"假模型"，只把收到的 prompt 原样返回。新版本更新了模拟 token 的处理逻辑，配合即将发布的新版 LLM 进行测试。开发者可以用它在不消耗 API 额度的情况下验证插件对输入输出的处理是否正确。

## English Version

**llm-echo 0.5 Updates Simulated Token Behavior for LLM Debugging**

Simon Willison released llm-echo 0.5, a debug plugin that provides a fake "model" which echoes back prompts without invoking any real LLM. The update revises how simulated tokens are handled, tested alongside an upcoming LLM release. Developers can use it to verify plugin input/output handling without spending API credits.

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**来源**：[Simon Willison](https://simonwillison.net/2026/Oct/18/llm-echo/)

**详情页**：https://ai.daily.yangsir.net/daily/20261019-T0-01

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