GPTZero Coupons & Promo Codes

GPTZero is an AI detection platform that estimates whether text was written by a person or by AI models such as ChatGPT, Claude and Gemini, with highlights at the document and sentence level. Founded in January 2023 by Edward Tian and Alex Cui, it also offers a plagiarism checker, a Hallucination Detector for citations, Writing Replay for Google Docs and a Chrome extension. In June 2026 GPTZero announced it is joining Superhuman, the company behind Grammarly.

GPTZero has a free plan with 10,000 words a month and paid plans billed monthly or yearly: Premium is $12.99 a month and Professional $24.99 a month on annual billing, with team, enterprise and API options.

Checked 2 October 2026: current tracked offers — 45% OFF (save 45% with annual billing), FREE PLAN (10,000 words a month, no credit card required). Read our GPTZero Review 2026: The AI Detector Checked Against the Hype before you order.

Know before you buy (checked 2 Oct 2026)

• Plans: Free (10,000 words a month); Premium $12.99 and Professional $24.99 a month billed annually — monthly billing costs more.
• Cancellation: cancel anytime from Subscription Plans in your account; it takes effect at the end of the current paid term.
• Refunds: no fixed refund window is published — requests go to GPTZero support and are reviewed case by case.
• Trustpilot: 2.2/5 from 140 reviews.

Full policy details in our GPTZero review.

Why Isn't My GPTZero Coupon Working?

If a GPTZero code won't apply at checkout, a few common causes explain most cases:

• One-time or new-customer only: some codes are restricted to first orders and won't apply to a returning customer's cart.
• Excluded items: sale or clearance items are often excluded from storewide percentage codes.
• Case sensitivity or extra spaces: copy the code directly and paste it without a leading or trailing space.
• Expired or regional offer: some codes are time-limited or valid only for a specific country's store.
• Minimum spend not met: check whether the offer requires a minimum order value before it activates.

If a code still won't work after checking these, the offer has likely expired since our last verification — let us know so we can review it.

Q: Do the GPTZero codes on this page actually work? A: Every code and deal listed here is checked before it goes live and rechecked regularly. Anything that stops working is removed or updated. If a code fails at checkout, tell us through our contact page and we will fix or remove it.

Q: How do I use GPTZero coupon codes? A: Click "Show Coupon Code" on the offer, copy the code, shop on the brand's site, then paste it into the promo or discount field at checkout before you pay. Offers marked "Deal" apply automatically once you click through.

Q: How often is this GPTZero page updated? A: We recheck the offers regularly and refresh this page whenever a code changes or expires, so what you see above should reflect what is currently available.