LLM Token Counter

This browser-based LLM token counter lets you accurately calculate the token usage of any prompt across all major language models — including GPT-3.5, GPT-4, Claude-3, Llama-3, and many more. Everything runs locally in your browser, so no data is sent to any server. It's a simple, fast, and privacy-respecting tool for developers, prompt engineers, and AI teams who need to track and manage token usage when building and optimizing LLM applications.