Free AI Writing Refiner —
Refine AI Writing & Reduce False Positives

Text Humanize restructures content at the sentence level to target the exact signals Turnitin's AI detection measures — burstiness, perplexity, and writing rhythm. Refined text consistently scores significantly lower on Turnitin. Always review your output before submission.

GPTZero measures perplexity and burstiness at both document and sentence level. Text Humanize varies sentence length, injects natural phrasing, and reduces the predictable token sequences GPTZero looks for, which often lowers its score. GPTZero is an ML-based detector, so a lower score is not guaranteed — always review your output.

We test against Turnitin, GPTZero, Originality.ai, Copyleaks, ZeroGPT, and Winston AI. Our engine targets the linguistic patterns these detectors measure, which often lowers detection scores. Results vary by content and detector — modern ML-based detectors may still flag rewritten AI text, so a lower score is never guaranteed. Always review your output and use it responsibly.

Yes, completely free with no login required. Start humanizing AI text instantly — no account, no credit card, no trial period.

Yes. Our engine rewrites text to eliminate the key AI writing patterns — burstiness, repetitive sentence rhythm, excessive transition words, and low lexical diversity — which typically results in a significantly lower score on all major detectors. Results vary by content type; always review the output yourself.

Yes. The Academic tone preserves scholarly vocabulary and formal structure while removing the mechanical patterns that detectors target. You are responsible for ensuring your use complies with your institution's academic integrity policies.

No. Your text is processed in real time in memory only, and is immediately discarded after processing. It is never written to storage, never shared with third parties.

Paraphrasers swap synonyms. Text Humanize targets the deep linguistic signals AI detectors measure — burstiness, perplexity, lexical diversity (MATTR), hedging density, and sentence rhythm variation. That's why it works where paraphrasers fail.

Text Humanize offers 5 tones: Casual (conversational, relaxed), Natural (default — balanced everyday writing), Professional (formal business language), Academic (scholarly with proper structure), and Creative (expressive with varied sentence forms). Each tone adjusts vocabulary, sentence rhythm, and structural patterns differently.

Text Humanize is optimized for English. While our LLaMA-based engine can process other languages, detection-score reduction against major detectors (which are also primarily trained on English) is most reliable for English-language content.

Yes — meaning preservation is a core metric we optimize for, targeting 99%+ semantic retention. Our engine identifies and protects key entities, facts, numbers, and arguments while restructuring the linguistic surface to remove AI patterns. You should always review the output yourself before using it.

The free tool processes up to 10,000 characters per request. For longer documents, paste in sections or upgrade to Pro for bulk processing and higher limits.

The AI Detector tab runs 9 linguistic analysis metrics — including burstiness, MATTR (lexical diversity), hedging density, Zipf compliance, and sentence length variation — plus an optional ML ensemble via Sapling AI and GPTZero APIs. It gives you a 0–100 AI probability score with per-sentence breakdowns.

Text Humanize uses a three-stage pipeline: (1) linguistic analysis to identify the dominant AI writing flaw, (2) targeted LLaMA 3.1 rewriting with a precision prompt addressing that specific flaw, and (3) quality evaluation — if the output scores below threshold, a second corrective pass runs automatically. See our Methodology page for full technical details.