Release: ttok 0.4
Simon Willison’s Weblog
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8th October 2026
Release
ttok 0.4 — Count and truncate text based on tokens
ttok is my CLI tool for counting tokens, using OpenAI's open source tiktoken library.
It hasn't been in updated in a couple of years, but I finally fixed a Click warning, updated CI, and added a --list-models command to list available models.
It works with uvx, so you can count tokens in anything like this:
cat file.txt | uvx ttok
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