llm-echo 0.5 发布：模拟 token 用量计入工具调用、系统提示词与推理 token

llm-echo 0.5

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llm-echo 0.5 更新了模拟 token 用量统计，把工具调用、系统提示词和推理 token 一并计入。Simon Willison 正在筹备 llm 新版本，测试 PR 时重新查看了这个调试插件。

正文 · 原文

I'm working towards a new LLM release, and testing PRs caused me to revisit the llm-echo debug plugin. This plugin provides a "model" which doesn't involve an LLM at all - it just repeats back the prompts that have been fed to it. The new release now updates the simulated token usage counts to take tool calls, system prompts, and reasoning tokens into account.

Example usage:

uvx --with llm-echo llm -m echo 'hi there' -o thinking 1 --usage

Outputs:

First I consider the prompt, then I decide what to say.
{
  "prompt": "hi there",
  "system": "",
  "attachments": [],
  "stream": true,
  "previous": []
}
Token usage: 2 input, 24 output

来源：Simon Willison · simonwillison.net