AI Token Cost Estimator

AI Token Calculator

Estimate GPT, Claude, and Gemini project costs from file size, pasted text, workflow rounds, and daily usage.

Site language

Estimator setup

What are you building?

Start from a realistic workload, then tune the numbers.

0 characters 0 words
Advanced custom

OpenAI

GPT

Base
Tokens per run 0
Workflow cost $0.00
$0.00daily $0.00monthly $0.00yearly

$0.00 / run

Anthropic

Claude

+5%
Tokens per run 0
Workflow cost $0.00
$0.00daily $0.00monthly $0.00yearly

$0.00 / run

Google

Gemini

-3%
Tokens per run 0
Workflow cost $0.00
$0.00daily $0.00monthly $0.00yearly

$0.00 / run

Estimate logic

Why this cost?

Buffered input
0 tokens
Expected output
0 tokens
Workflow rounds
0
Daily usage
0

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Cost levers

Answer length impact

Mode Output Monthly
Short 10% $0.00
Current 25% $0.00
Long 60% $0.00

    Original benchmarks

    Realistic file-to-token examples

    These sample workloads help users understand why file size alone is not enough for AI budget planning.

    Workload Source size Estimated input tokens Typical use
    Korean PDF manuals 100 MB 15M-18M RAG and summaries
    JavaScript codebase 25 MB 7M-9M Architecture review
    Sales slide decks 80 MB 6M-8M Proposal generation

    Cost planning guides

    Learn before you spend

    Input tokens vs output tokens Internal document RAG cost PDF summary cost planning GitHub code analysis cost How to reduce AI API cost 한국어 가이드 日本語ガイド

    AI token calculator for project planning

    Estimate how many tokens and how much budget your AI project may need before sending files or text to GPT, Claude, or Gemini.

    File size and text input modes

    Use file size mode for early project estimates, or paste text directly when you already have the prompt, document, or article content.

    Compare GPT, Claude, and Gemini costs

    Model prices and tokenization vary. Comparing providers side by side helps you choose a practical model for your workload.

    Forecast daily, monthly, and yearly spend

    Add expected daily usage to understand whether a workflow is cheap enough for production, internal automation, or client delivery.

    Frequently asked questions

    How many tokens are in a 1MB file?

    It depends on file type and text density. Code and Markdown usually have more tokens per MB, while PPT and Excel are estimated lower.

    Can I calculate tokens from pasted text?

    Yes. Text mode estimates characters, words, input tokens, output tokens, and model costs from pasted content.

    Why are GPT, Claude, and Gemini costs different?

    Their tokenizers and input/output prices are different, so the same project can have different estimated costs by model.

    How can I reduce AI project cost?

    Remove unnecessary files, summarize large documents first, reduce repeated workflow rounds, and keep generated answers shorter.

    Does this calculator match the actual bill?

    No. This is an estimate for planning. For exact usage, check the usage field returned by each AI API.

    Calculation basis

    OpenAI pricing Claude pricing Gemini pricing