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How I Built PromptBurn: A Free Tool to Count LLM Tokens and Slash API Bills ⚡🔥

Hey everyone! 👋 As developers, we’ve all been there: you push a feature leveraging GPT-4o, Claude 3.5, or Gemini 1.5, only to look at your API billing dashboard a week later and wonder how your token usage spiraled out of control so fast. Estimating token costs and checking prompt sizes shouldn't…

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  1. 2026-11-14 10:08 · DEV Community — AI
    How I Built PromptBurn: A Free Tool to Count LLM Tokens and Slash API Bills ⚡🔥

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