{"product_id":"the-llm-api-cost-calculator","title":"The LLM API Cost Calculator","description":"\u003cp\u003eKnow what your prompts and agent runs will cost before the invoice tells you. The LLM API Cost Calculator is a spreadsheet for developers, indie hackers and operators who pay for model APIs by the token. Type in your prompt and output sizes, cache hit rate and volume, and it shows cost per call, per day and per month. For agents, it models the part that usually blows budgets: context that grows with every step, plus tool-call overhead and retries. You get cost per run, per day and per month, with a step-by-step breakdown.\u003c\/p\u003e\n\u003cp\u003eThen put the numbers to work. The Model Comparison tab prices the same workload on every model in your price table and sorts them cheapest first. Budget \u0026amp; Pricing shows how many runs a monthly budget covers and suggests a per-user\/seat price at your target gross margin, with a heavy-user check, so you can price an AI product without guessing. The price table comes prefilled with 12 models from OpenAI, Anthropic, Google, xAI and DeepSeek. Each price was copied from the provider's official pricing page and carries its source link and an \"as of\" date (15 Oct 2026). Prices change, so the table is fully editable and the workbook tells you to check it.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLLM-API-Cost-Calculator.xlsx\u003c\/strong\u003e with 6 tabs:\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart Here:\u003c\/strong\u003e how to use it, colour key, and what it doesn't model\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Price Table:\u003c\/strong\u003e input \/ cached input \/ output price per 1M tokens for 12 models, each with source URL, \"as of\" date and price notes, plus 8 blank rows for your own models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePer-Call Estimator:\u003c\/strong\u003e prompt tokens, output tokens, cache hit %, calls\/day → cost per call\/day\/month (with an optional words-to-tokens helper, clearly labelled as an approximation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgent Run Estimator:\u003c\/strong\u003e steps, context growth per step, tool-call overhead, retries, caching → cost per run\/day\/month, plus a 30-step breakdown table\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Comparison:\u003c\/strong\u003e one workload across every model, sorted by cost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBudget \u0026amp; Pricing:\u003c\/strong\u003e max runs for a budget, suggested price per user\/seat at a target margin, margin sensitivity and a heavy-user check\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eClearly marked input cells, locked formula cells (sheet protection has no password), dropdowns and data validation\u003c\/li\u003e\n\u003cli\u003eLabelled sample inputs on every tab, ready to overwrite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-Start-Guide.pdf\u003c\/strong\u003e (4 pages): setup, how each estimate is calculated, a hand-checked worked example, and the price sources\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWorks in Excel 2010 or later (desktop or web), Google Sheets (via import) and LibreOffice Calc. Estimates only: your provider's invoice is the source of truth.\u003c\/p\u003e","brand":"Prompt \u0026 Process","offers":[{"title":"Default Title","offer_id":48282609057963,"sku":null,"price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/1535\/9147\/files\/cover_fe77b786-7cf5-4a6e-8af4-38d58c7fc16d.png?v=1792157709","url":"https:\/\/promptandprocess.shop\/products\/the-llm-api-cost-calculator","provider":"Prompt \u0026 Process","version":"1.0","type":"link"}