Find the expensive session
Sessions, messages and model requests. Start with the biggest consumer and jump straight into the conversation.
wheresmytokens.Codex session analyzer
All in your browser
Make sense of your Codex token usage
Dude,
Where Are My
Tokens?
Asked for a tiny fix and the context grew by half a million tokens? The logs remember every step. Let’s take a look.
No sign-upNo log uploads
01
Let’s figure it out.
Open your Codex logs to see your sessions.
Your files are read only in your browser and are never uploaded.
What’s inside
From “where did it all go?” to the exact step.
See what went into the model
Cached input, uncached input and model output. The timeline shows how context grew at each step.
CachedUncachedOutput
Follow the tools
See which commands returned the most text and how often the model read it again as part of the context.
No mystery
A few things to know.
Do I need to connect my account?
No. Only Codex session files are needed. No password, access token or account connection is required.
Are the dollar amounts charges to my subscription?
No. They are estimates based on API rates. Weekly limit usage is estimated separately when the logs contain suitable readings. See the methodology for details.
Can I use it offline?
Yes. Download the offline version, extract it and open index.html. All scripts, fonts and the image are included.