Prompt Cost Calculator
Estimate AI tokens, costs, and usage with Prompt Cost Calculator on AboveTool. Free browser calculator for developers and teams — no data sent to servers.
Prompt Cost Calculator
turns token volume and $/1M rates into per-call and monthly cost projections
Illustrative planning math only — vendor prices and tokenizers change. Nothing is uploaded to a server unless a mode explicitly calls a public API (none do here).
About Prompt Cost Calculator
Prompt Cost Calculator is used to estimate the API cost of a specific prompt by counting its tokens and multiplying by the selected model's pricing. It works by: it tokenizes your pasted prompt using the model's tokenizer, counts input and estimated output tokens, and computes the exact cost for that prompt. System prompts are charged as input tokens on every API call — a long system prompt that runs thousands of times per day can account for a large share of total cost. Prompt Cost Calculator runs free in your browser at abovetool.com — no signup required.
How to use
- Fill in the calculator fields (tokens, rates, hours, text, or model presets).
- Click Calculate for cost, capacity, ROI, or token estimates.
- Copy the summary for budgets, docs, or stakeholder updates.
Features
- Dedicated modes for tokens, LLM cost, RAG, VRAM, ROI, and more
- Illustrative model rate presets you can override
- Browser-only math — nothing uploaded for calculation
- Copy-friendly result cards for planning docs
Frequently asked questions
Is Prompt Cost Calculator free on AboveTool?
Yes. Prompt Cost Calculator is free to use on abovetool.com with no account required.
Are my files uploaded to a server?
Most tools on AboveTool process files locally in your browser. Your content stays on your device.
Who is this AI Tools tool for?
Anyone who needs quick Calculators tasks without installing desktop software — students, developers, designers, and office teams.