About Requill

Requill is a Claude Watermark Remover and AI humanizer. It rewrites AI-generated text to generate human-like text, remove Claude's invisible AI watermark, and produce natural, undetectable AI writing - all while preserving your original meaning, facts and tone.

Our mission

We built Requill to give writers, researchers and content teams a private, reliable way to humanize AI text. Anthropic embeds a statistical AI watermark into Claude output, and other models add their own signals. Requill overwrites those signals so your writing reads as genuinely human, without changing what you meant to say.

How the Claude Watermark Remover works

The Claude watermark biases token choices according to a secret key - the signal lives in which words were chosen. Requill runs a multi-pass paraphrase with a different model on our own infrastructure using a "preserve meaning, change wording" prompt. Because a different model re-chooses the words, the biased distribution is overwritten and the AI watermark no longer survives. This is the approach shown by published research to reliably defeat statistical text watermarks.

What you can do with Requill

• Remove Claude's invisible AI watermark from AI-generated text
• Humanize AI text and generate human-like, natural writing
• Produce undetectable AI content that helps bypass AI detection (GPTZero, Turnitin, Originality.ai)
• Use it as an AI humanizer, paraphrasing tool and sentence rewriter in one place
• Keep your meaning, facts and tone - Requill changes wording, not your message
• Process text privately on our own infrastructure, never a third-party AI

Frequently asked questions

What does the Claude Watermark Remover do?

It rewrites Claude-generated text so Anthropic's statistical AI watermark no longer survives, generating human-like text that keeps your meaning, facts and tone intact.

Can Requill humanize AI text and generate human-like text?

Yes. Requill is an AI humanizer that paraphrases AI-generated drafts into natural, human-like writing so your content reads as if a person wrote it.

Does it help bypass AI detection like GPTZero or Turnitin?

By re-choosing the words with a different model, Requill removes the statistical signals AI detectors look for, which helps produce undetectable AI text. Please use it responsibly and follow the rules of any platform, school or publisher you submit to.

Will removing the watermark change my meaning?

No. Requill is designed to preserve your original meaning, facts and tone. It changes the wording and statistical patterns, not the message.

Is my text private?

Requill processes text on our own infrastructure and never sends it to a third-party AI. With Requill Pro, anonymous mode processes your text without ever storing it.

Responsible use

Requill is provided for legitimate editing and research. Deliberately stripping AI-provenance marks may conflict with transparency rules (such as the EU AI Act) or with platform and academic policies. Please use Requill responsibly and in line with the terms of the tools and platforms you use.