Your AI text,
finally sounds human

Yes. Checking text for AI patterns is free and never uses words, in the free tools and in your account. The Free plan adds 500 words of rewriting a day (1 rewrite a day, Standard tone). No credit card required. Pro ($9 a month) gives you 50,000 words a month.

We check your text against 40 patterns associated with AI-generated writing — the kinds of signals detectors such as GPTZero and Turnitin weigh, like predictable word choice, uniform sentence rhythm, stock AI vocabulary, and formulaic structure. You get a 0–100 score with a breakdown of which patterns triggered. Like any detector, it gives an estimate, not proof.

No tool can promise that. The humanizer rewrites your text to reduce the patterns GPTZero and similar detectors tend to flag, and shows you the score before and after. Detectors differ and update often, so re-check the result with our free AI detector and read it over before you use it.

It works with text from ChatGPT (GPT-3.5, GPT-4, GPT-4o), Claude, Gemini, Copilot, Llama, and any other model — or with your own writing.

You can use it to check and polish writing that is your own — for example if you write in English as a second language and worry about a false AI flag. Don't use it to hand in work that isn't yours: that breaks our Terms of Service and most schools' rules. Always follow your institution's policy on AI tools.

The free tools don't keep your text: the instant AI-detector score is calculated in your browser, and the optional deep scan and the no-signup humanizer process text without saving it. When you're signed in, the documents you check or humanize are saved to your account so they appear in your History (the Free plan shows your 5 most recent). They stay until you delete them or your account, and you can delete any of them at any time. Voice Match keeps a short description of your style, not your writing samples. We never sell your text or use it to train AI models.

Detection scores your text and shows you exactly which AI patterns are present. Humanizing rewrites the text to reduce those patterns while keeping your meaning — always read the result to make sure it still says what you intended.

We show the full 40-pattern breakdown behind your score, before and after rewriting, instead of a single black-box number. There's also a real free tier, and Pro starts at $9/month.

No tool can guarantee how Turnitin — or any AI detector — will score a piece of writing. Detectors change their models often, and Turnitin now also looks for text that has been run through AI humanizers. What HumanizeIt does is reduce the patterns detectors tend to flag and show you the result. Check any text with our free AI detector before you submit it, and follow your institution's rules on AI use.

Yes — HumanizeIt works with text from GPT-4, GPT-4o, Claude, Gemini, Copilot, and any other AI model. Just paste the output and we handle the rest.

Every paid plan comes with our 14-day "Sounds Like You" guarantee: if HumanizeIt doesn't make your writing clearer and more like you, email support@humanizeit.app within 14 days for a full refund, monthly or annual (30 days on Team annual). We never promise a score on someone else's AI detector; no honest tool can. Our refund policy has the details.

Yes, forever: free AI checks plus 500 words of rewriting a day. No credit card required, no trial period. Upgrade to Pro anytime for more words, all 5 tones and Voice Match.

No. Every rewrite has a real cost for us, so "forever" would be a promise we couldn't keep honestly. While it lasts, Founding 100 gives the first 100 backers two years of Pro for $99, paid once. See humanizeit.app/lifetime.

Words you send to be rewritten. Checking text for AI patterns is free and never uses words.

Free words reset 24 hours after your last reset. Pro and Team words reset with each billing month. If you need more before then, you can move up a plan.

Yes. Run it through the free AI detector to see which patterns triggered the flag, and get the free False AI Flag Appeal Kit for an email template and an evidence checklist. Research shows detectors misclassify non-native English writing more often (Liang et al., 2023).