Context Budget Planner – Calculate LLM tokens and costs before sending

Summary: Context Budget Planner calculates exact token counts and estimates costs for Claude, GPT-4, Gemini, and more, enabling side-by-side cost comparisons before API calls. It processes data entirely client-side to ensure privacy and eliminate tracking.

What it does

It counts tokens and estimates input plus output costs across multiple LLM providers using client-side WebAssembly processing, with no server involvement or data collection.

Who it's for

Developers and users who need to anticipate and compare LLM API costs across providers while maintaining data privacy.

Why it matters

It prevents unexpected LLM API charges by providing accurate cost estimates and supports privacy by running all computations locally in the browser.