---
format: "aidr-story-markdown/v1"
id: "f242adb232a8919dd94035cc76b273ea2f1bcb6cc64b2ebba127390f22fe5d02"
canonical_url: "https://aidr.today/f242adb2?lang=en"
title: "ttok 0.4"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-08T23:34:28.000Z"
category: "Tools"
topics: ["openai","llm","devtools"]
source_urls: ["https://simonwillison.net/2026/Oct/8/ttok/"]
summary: "ttok 0.4 is a CLI tool for counting tokens using OpenAI's tiktoken library. This update fixes a Click warning, updates CI, and adds a --list-models command."
---

# ttok 0\.4

> [Open the canonical story](<https://aidr.today/f242adb2?lang=en>)

**Published:** 2026-10-08T23:34:28.000Z
**Category:** Tools
**Topics:** openai, llm, devtools

## Summary

ttok 0\.4 is a CLI tool for counting tokens using OpenAI's tiktoken library\. This update fixes a Click warning, updates CI, and adds a \-\-list\-models command\.

## Sources

- [Story source](<https://simonwillison.net/2026/Oct/8/ttok/>)