Ai detector pricing · checked Oct 8, 2026
GPTZero pricing
GPTZero costs $23.99 a month on its cheapest monthly plan (Premium: 300,000 words per month, 50,000 characters per scan, 50-file batch), or $12.99 a month billed yearly. Free option: "Get started for free" button; free plan limits not shown on the pricing page.
Every GPTZero plan
Highlighted: the plan with the lowest cost per 1,000 words on monthly billing. "Per 1,000 words" divides the monthly price by the monthly word allowance, assuming you use all of it.
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How we got these numbers
We read GPTZero's own pricing page on Oct 8, 2026 and kept a dated screenshot. Prices here are exactly what that page showed, never figures from app-store purchase lists or other review sites. A script re-reads the page every morning; when something changes we update this page and note it in the price change log.
Word allowances are the vendor's own numbers. We haven't yet measured how many words each plan really lets you process; that comes with our free-tier test in November 2026. How we test.
No company paid for this page, and we don't earn anything if you click through to GPTZero.