Remove the AI watermark. Keep the text.
Claude, ChatGPT, Gemini, Grok and other AI models can mark text with watermarks that are invisible to the human eye. The watermark comes from the model's choice of words. Clean AI Watermark changes only the words needed to remove it. Your meaning stays the same.
Paste on the left and hit Remove watermark. Takes about ten seconds.Paste above and hit Remove watermark. Takes about ten seconds.
How the watermark works ↓Most watermark removers delete invisible characters. That's not where the watermark is.
Zero-width spaces and soft hyphens are easy to strip. But that's not where a text watermark lives. Claude and Gemini use watermarking based on patterns in the words the model chooses. Across a longer text, those choices form a statistical fingerprint that specialized tools can detect. Remove the hidden characters and the fingerprint is still there.
We do the other thing. We replace enough words to break the watermark's pattern, but only as many as needed so your text still reads like the original. Then we remove any hidden characters too.
| Character cleaners | Rewriters / humanizers |  Clean AI Watermark | |
|---|---|---|---|
| Removes hidden Unicode | Yes | No | Yes |
| Breaks the SynthID word pattern | No | Yes | Yes |
| Preserves your meaning, tone and length | Yes | No | Yes |
Any model in, clean text out
Claude, ChatGPT, Gemini and other AI models mark text with invisible watermark patterns. Paste text from any AI model and Clean AI Watermark will handle it.
Claude
ChatGPT
Gemini
GrokClean AI Watermark- Claude
- Claude started uisng watermarks since August 2026, worldwide. They can even appear when Claude translates, rewrites, summarizes or edits text.
- ChatGPT
- OpenAI has signed the EU code of practice that obliges AI providers to watermark text. It is unclear if OpenAI started the practcie.
- Gemini
- Gemini has used SynthID for text watermarking since 2024.
- Grok
- Hidden characters and markdown leftovers are removed from Grok text too.
GuidesClaude Watermark RemoverChatGPT Watermark RemoverGemini Watermark RemoverSynthID-Text RemoverAll guides
How it works
Three steps, about ten seconds.
Paste your text
Paste text from Claude, ChatGPT, Gemini, Grok or any other AI model. Up to 5,000 characters per run for free, or 20,000 with unlimited.
We remove the watermark
AI models use certain words and phrases more often than others. This creates an invisible watermark pattern in the way they write. We replace selected words with suitable alternatives until the pattern is broken, using only as many changes as necessary. Hidden characters, soft hyphens and markdown leftovers are removed at the same time.
Copy your clean text
Your meaning, tone and length stay the same. Sign in for unlimited access.
Made for text that's yours
You wrote it. AI changed it.
Rewrite, summarize, correct, translate or polish your own text with AI? The model can add its watermark in the process. Clean AI Watermark removes the watermark with minimal word changes while keeping your text's meaning intact.
Freelancers & agencies
Clean up AI-assisted client work before you deliver it. Remove the watermark while keeping the wording, tone and meaning close to the original.
Applications & cover letters
Use AI to draft or improve an application, then make the final text your own. Remove the watermark before you send it.
Writing in another language
Use AI to write, translate or improve text in English, German and other languages. Clean AI Watermark removes the watermark while keeping the meaning of your text.
Frequently asked questions
What is an AI text watermark?
An AI text watermark is a pattern in the words an AI model chooses. You cannot see it in the text, but a watermark detector can look for that pattern. Google's SynthID, for example, creates its watermark by changing the likelihood of certain words or tokens during generation.
Does Claude watermark text?
Yes. Claude models released since August 2026 use an invisible text watermark. Anthropic says the watermark comes from patterns in Claude's word choices, so nothing is added to the text and there are no hidden characters. It can also appear in text Claude translates or rewrites.
Does ChatGPT watermark text?
OpenAI is working to expand its provenance and watermarking systems to text as part of its EU AI Act commitments. Today, that is different from saying that every ChatGPT text output already carries a text watermark. Clean AI Watermark can still remove hidden Unicode characters and markdown leftovers from ChatGPT text.
Does Gemini watermark text?
Yes. Gemini uses Google's SynthID technology to watermark AI-generated text. Google introduced SynthID for Gemini text in 2024.
Can't I just delete the hidden characters?
You can, and we remove them too. But hidden characters are not the same as a text watermark. With systems such as SynthID, the signal comes from the model's word choices. Deleting hidden characters does not remove that pattern.
Will my text change?
A few words may change. We replace selected words with suitable alternatives to break the watermark pattern while keeping the meaning, tone and overall length as close to the original as possible.
Does this make text undetectable by AI detectors like GPTZero or Turnitin?
No. AI watermarks and AI-writing detectors are different things. A watermark is a signal created by the AI provider that can be checked with the right detection method. AI-writing detectors use other clues from the text. We remove the watermark, but we do not promise to make text invisible to AI-writing detectors.
Is it legal to remove an AI watermark?
Removing a watermark is not automatically illegal. What you are allowed or required to do with AI-assisted text depends on how and where you use it. Your school, employer or client may have its own rules about AI use and disclosure. Check the rules that apply to your situation.
Is my text stored?
No. We use your text to create the result and then discard it. We do not store your text or use it to train a model. Your account only keeps the information needed for your plan and usage limits.
What's free?
You can use Clean AI Watermark for free without an account. Sign in to get unlimited access.