Back to AI Hot
Decision BriefSimon Willisontoolmodelinfraproduct2026-10-08

ttok 0.4

Decision Summary

Decision Summary: “ttok 0.4” is a public AI signal for Builder and Operator. The practical question is whether follow-up docs, pricing, or access details make it actionable, not whether the headline is loud.

What Changed

Release: ttok 0.4 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 to

Why It Matters

If this touches a tool you already use, check whether it saves work now or just adds another tab to your stack.

Who Should Care

Builder
Operator
AI engineer
Product & automation
  • Builder: You ship products, tools, or workflows — scan for anything that changes the next build decision.
  • Operator: You run teams, processes, or infrastructure — check for cost, reliability, or vendor implications.
  • AI engineer: You work on model choice, agents, or inference — look for concrete technical constraints.
  • Product & automation: You embed AI into products or workflows — watch for integration or automation changes.

What To Do Next

Try today
Watch this week
Compare with stack
Save for later
Skip for now

Watch this week: Track the follow-up details; no need to act on the headline alone.

Source Confidence

MediumSimon Willison

This links to reputable reporting or first-hand analysis — generally useful, but not an official source.

How AI Hot labels sources →

Original sources

AI Hot summarizes public source material and links back for verification. Use the original source for full reporting, quotes, and context.

Original source