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Free tools

Free tools for AI builders

Small, fast, no sign-up tools for anyone running AI agents. Work out what your tokens cost, what a prompt costs, and what you save by moving heavy work out of the chat. More are added regularly.

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LLM cost calculator

See the tokens and dollars you save per year.

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Prompt cost analyzer

Paste a prompt, see its token cost and saving.

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MCP ROI calculator

In-chat cost vs an execution layer, with ROI.

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Context window planner

Work out how much of your window real data leaves for reasoning.

Coming soon

Ready to cut your token bill for real?

Connect one URL to your AI and let the heavy work happen before it reaches the model. First 1,000 calls free.

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