Tokenometer Earns a 80 Proof of Usefulness Score by Benchmarking the Real Dollar Cost of LLM Prompts

Tokenometer is an open-source tool that helps developers accurately forecast the real dollar cost of AI model prompts before they reach production. Built after discovering that teams using common tokenizer proxies under-budget Claude costs by roughly 62%, it benchmarks 63 AI models across providers like Claude, GPT-4o, and Gemini. Available as a CLI, browser playground, VS Code extension, and GitHub Action, it earned an 80 Proof of Usefulness score at launch.