Tools for heavy AI users
Calculators and trackers we built for our own work with coding agents. The calculators run in your browser and send nothing anywhere.
The tools
- Compare AI modelsEvery pair, side by side
- AI token cost calculatorWhat your tokens cost on every model
- Context window calculatorWill my code fit in the context window?
- Prompt caching calculatorHow much prompt caching saves you
- Claude plan vs API calculatorSubscription or pay-as-you-go?
- Free limit reset trackerIs a free Claude or Codex reset live right now?
- Claude usage limit trackerDid the 5-hour or weekly limit go up or down?
- Claude Code usage dashboardYour tokens, models, cost and busiest hours, from one command
Numbers from the makers' own pages, checked by hand, last read . List prices in US dollars before tax. Spotted a mistake? office@shuriken.sh.
Made by Shuriken, the harness for coding agents. Its hot swapping moves your chats to another of your accounts or API keys when one nears its limit. Use only accounts you own and are entitled to use.
Try Shuriken on your own computerYou're signed in
Add your Claude, Codex and Gemini accounts once. Shuriken switches between them so your agents keep working.Your accounts, projects and chats are in the app.
Coming soon