One workload, five monthly bills. Prices read on the vendors' pages on 11 September 2026. Free, no signup.
| Platform | Your usage in its unit | Estimated bill | Why |
|---|
Estimates from published plan floors, not quotes. Built by Gravity. Current prices for 16 platforms: the AI agent pricing index.
Every automation platform bills in its own unit. Zapier counts a task for every step. Make counts a credit for every module action, which is the same thing under a different name. n8n counts one execution per run, however many steps it has. Activepieces counts one credit per run. Gravity charges a flat monthly plan with a lot of usage included. The same workflow therefore produces five different numbers, and the number that looks smallest on the pricing page is not always the one you pay.
You enter the runs and the steps. The estimator converts them into each platform's unit and finds the lowest published plan that covers the total, from the prices I read on 11 September 2026. Where the total climbs past a plan's allowance and the vendor prices the next step on a slider, the bill shows the floor with "from" and says where to look. I would rather show a floor than invent a slider price.
It does not price AI steps separately (Zapier charges more tasks for some of them), it does not model annual versus monthly billing beyond what each page defaults to, and it does not know your seat count. It is the order of magnitude, dated, with the sources one click away. For the full dated table of 16 platforms, including the ones that publish no price, use the pricing index; for the worked comparison this tool grew out of, read the n8n alternatives post.
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You enter how many times a workflow runs a month and how many steps it has. The estimator converts that into each platform's billing unit (Zapier tasks, Make credits, n8n executions, Activepieces credits) and finds the lowest published plan that covers it, using prices read on 11 September 2026.
Above a plan's included allowance the vendor moves you up a slider or a tier whose exact price is set on their page, not in this tool. The estimator shows the floor you will pay and says where to look for the next step.
From each vendor's pricing page, read on 11 September 2026, and kept current by the AI agent pricing index, which is checked every month against the live pages and the Wayback Machine.