Claude Code and Codex are logging your token usage locally. Here is how to read it.
Claude Code and Codex log detailed token usage to your local disk after every session. Here is what is in those files and what to do with it.
Rob··4 min read
Field notes for deploy-safety teams.
Practical writing on deploy risk, runbooks, incident response, dependency changes, and the habits that keep small engineering teams out of avoidable fire drills.
Written for
Lean engineering teams
Focus
Deploys, incidents, runbooks
Bias
Useful over theoretical
Can You Tell When an LLM API Swaps in a Cheaper Model?
Providers have every reason to serve a smaller or more quantized model under load. I ran the experiment to see if you can catch it from the outside. The obvious method fails backwards, and the one that works needs to accumulate evidence.
Rob··4 min read