FAQ
Frequently Asked Questions
These are the questions people ask us most often. If yours isn't here, email us.
Overview & basics
What is ZeroClaude?
ZeroClaude is a free AI-content detector with a set of writing tools: humanizer, paraphraser, summarizer, grammar checker, translator, dictionary, email helper, citation generator, word counter and more.
When should I use ZeroClaude?
Whenever you need to know whether a text was likely written by AI — grading essays, reviewing submissions, screening applications — or when you want to improve your own writing.
Which languages are supported?
English and Chinese are fully supported, and most major languages work for detection and all writing tools.
Pricing, billing & teams
Is ZeroClaude free?
Yes. Every tool has a free tier. Paid plans for higher limits are coming soon — see Pricing.
What payment methods will be supported?
Major credit and debit cards. Business plans can be invoiced.
Can I cancel at any time?
Yes. Subscriptions can be cancelled at any time and stay active until the end of the billing period.
Detection accuracy & methodology
How does the ZeroClaude AI detector work?
Your text is split into sentences. Each sentence is scored by a large language model trained to recognise the patterns of machine-written text, and the scores are blended with statistical signals such as how evenly sentence lengths are distributed (burstiness) and how often stock AI phrases appear. The result is an overall AI percentage and a list of highlighted sentences.
How accurate is ZeroClaude?
No AI detector is perfect. Results are probability estimates that become more reliable with longer texts (a few paragraphs or more). Use them as one signal among several, never as the only basis for a decision about someone's work.
Why was my human-written text flagged?
Highly formal or formulaic writing — abstracts, legal text, product copy — shares traits with AI output. Check the highlighted sentences in context and consider other evidence such as drafts.
Privacy, security & data
Is my text stored or published when I check it?
No. Text is processed only to produce your result and is never published or added to any database. Results are briefly cached under an irreversible hash so repeat checks are instant.
Do you train models on my text?
No. Submitted text is not used for training.
What does my account store?
Your email, a securely hashed password and a history of your checks (tool, date, word count and score — not the text itself).
Product features & how-to
Which files can I upload?
.txt, .md, .docx and .pdf. Text is extracted in your browser.
How do I export a report?
After a detection, click “Export to PDF” and choose “Save as PDF” in the print dialog.
Can I move text between tools?
Yes. Your text follows you when you switch tools from the sidebar, and the humanizer can send its result straight back to the detector.
API, integrations & enterprise
Can I integrate ZeroClaude into my organisation or website?
Yes. A simple JSON API is available for detection and all writing tools. See the API documentation.
Is there a rate limit?
Free API use is limited to fair personal use. Contact us for higher volumes.
Education & academic use
Who is ZeroClaude for?
Teachers and professors reviewing assignments, editors and publishers checking submissions, recruiters screening cover letters, SEO teams auditing content, and writers who want to make sure their own work reads as human.
How should I cite the AI detector?
Mention the tool name, the date of the check and the percentage, for example: “ZeroClaude AI Detector, zeroclaude.app, checked 2 Nov 2026: 12% AI.” You can also export the result as a PDF report.
Account, support & partnerships
How do I contact support?
Email support@zeroclaude.app. We usually reply within one business day.
How do I delete my account?
Email support from your account address and we'll delete your account and history.