ProseShift is a free AI text humanizer that transforms ChatGPT, GPT-4, Claude, and other AI-generated content into natural, undetectable human writing. Paste your text, choose a writing style, and get a humanized version that bypasses AI detection tools like GPTZero, Turnitin, Originality.ai, and Copyleaks — all in seconds.
Most AI humanizer tools work like a black box — you paste text in and hope for the best. ProseShift is different. Our client-side scoring engine runs entirely in your browser, analyzing your text against the same metrics AI detectors use. You see exactly how detectable your writing is before spending a rewrite. No other tool offers this level of transparency.
Unlike Undetectable.ai, QuillBot, or HumanizeAI.io, ProseShift provides A/B model testing so you can compare outputs from different AI models side by side. Combined with tone analysis, 4 writing styles, and 3 intensity levels, you have full control over how your text is transformed.
Students use ProseShift to polish essays and assignments, ensuring their AI-assisted writing passes Turnitin and other academic integrity tools. Content creators and bloggers rely on it to rewrite AI drafts so they read naturally and rank well on Google. Marketers transform AI-generated copy into engaging, brand-consistent content. Researchers and professionals use it to adapt AI outputs for publication without compromising accuracy.
ProseShift supports 6 languages with fully localized scoring algorithms, AI pattern detection, and humanization prompts:
Yes! ProseShift offers a free tier with 5 rewrites per month in English. The real-time scoring engine is always free and unlimited — you can analyze as many texts as you want without signing up. For unlimited rewrites and all 6 languages, upgrade to Pro at €9/month or Agency at €29/month.
ProseShift is designed to produce text that scores as human-written across major AI detection tools including GPTZero, Turnitin, Originality.ai, Copyleaks, ZeroGPT, Sapling, and others. Our scoring engine measures the same metrics these detectors use — perplexity, burstiness, and style variation — so you can see your detection risk in real time before submitting.
ProseShift is designed to help you refine AI-assisted writing. The Academic writing style preserves formal tone, proper citations, and technical terminology while making the text read more naturally. The real-time scoring shows you exactly how your text would perform against Turnitin and other academic integrity tools.
ProseShift supports 6 languages with native scoring and humanization: English, Italian (Italiano), Spanish (Español), French (Français), German (Deutsch), and Portuguese (Português). Each language has its own AI pattern detection, readability formulas (Flesch-Kincaid for English, Gulpease for Italian, Fernandez-Huerta for Spanish), and language-specific prompts. Auto-detection identifies your text's language automatically.
ProseShift is the only AI humanizer with real-time client-side scoring — you see exactly how human your text appears before and after processing, without relying on external APIs. Unlike Undetectable.ai, ProseShift offers A/B model testing to compare multiple AI outputs. Unlike QuillBot (which focuses on paraphrasing), ProseShift specifically targets AI detection evasion with native support for 6 languages, tone analysis, and transparent scoring that most competitors lack.
Yes. ProseShift works with text generated by any AI model including ChatGPT (GPT-4, GPT-4o), Claude, Gemini, Llama, Mistral, and others. The scoring engine detects common AI writing patterns regardless of which model generated the text, and the humanization process transforms it into natural-sounding prose.
ProseShift is built with privacy in mind. Your text is processed through secure API calls and is not stored on our servers after processing. The scoring engine runs entirely in your browser — your text never leaves your device for analysis. We use no tracking cookies or analytics.