Humanizer

AI-generated text (ChatGPT, Claude, Gemini output) has telltale patterns — em-dashes, perfect grammar, predictable rhythm — that AI detectors (GPTZero, Originality.ai, Turnitin, etc.) catch instantly. This tool rewrites that text to look and sound like a real human wrote it, so it passes detectors and reads naturally.

• Fast — Single LLM rewrite. ~10s. Light humanization. Use for quick drafts or short snippets.
• Chain — Translates your text through 4 languages (English → Chinese → Japanese → Finnish → English) using 3 different AI models (Claude, GPT, Gemini). Each translation breaks AI patterns through linguistic drift. ~45s. Good for longer content.
• Stealth 🥷 — The full pipeline: translation chain + StealthHumanizer BART (runs 4 variants and picks the best) + fakespot-ai detector feedback loop. ~60s. Strongest option. Use this when you need maximum undetectability.

• Formal — No chaos. Keeps polish. For official docs, proposals, formal writing.
• Email — Light fragments, pro hedges, varied punctuation. For client emails, newsletters, internal comms.
• Social — Short hook-style sentences, fragments, dropped Oxford commas, no em-dashes. Default for Twitter, Instagram, TikTok, Facebook, YouTube captions and posts.
• Casual — Lowercase sentence starts, dropped apostrophes (ive, dont), filler words (ngl, tbh), rare typos. For Reddit, DMs, super informal captions.
• Blog — Longform readable prose with personal takes and opener phrases. For blog posts, YouTube video descriptions, articles.

1. Paste your AI-generated text into the Original box (left). Works best on 100–5000 words.
2. Pick an Engine — start with Stealth for anything that matters.
3. Pick a Target — match it to where the content will be published.
4. Click ✨ Humanize and wait (10–60s depending on engine).
5. Review the Humanized output (right). Copy it with the 📋 Copy button.
6. Check the Sentence heatmap below — red sentences are still flagged as AI. Edit those by hand to drop the score further.
7. Not happy? Hit ↻ Re-run for a different variation (each run uses different random seeds).

• ★ AI Detector (weighted ensemble) — THE score that matters. 75% weight on Hello-SimpleAI (responsive, trained on human-vs-ChatGPT) + 25% weight on fakespot-ai (strict anchor that rarely moves). Shown as % (0–100). Lower = more human. If this drops meaningfully after humanization, you win.
• Tell Density — Fast surface sanity check (0–100). Just counts em-dashes, "delve", phrase patterns. NOT a real detector. Humans use some of these words too, so don't trust this alone.
• AI Tells — Count of specific AI-giveaway words and phrases found (e.g. "delve into", "navigate the landscape").
• Burstiness — Variation in sentence length. Humans vary a lot (high = good). AI tends toward uniform (low = bad).
• Em-dashes — Count of —. Humans rarely use them. 0 is the goal.

The fakespot-ai detector is extremely strict and often stays near 100% AI even on clearly human writing — that's why it only has 25% weight. The Hello-SimpleAI detector (75% weight) is more balanced and will actually move as the text is humanized. Watch the simpleai number specifically in the per-detector breakdown — if it drops below ~20% you're in human territory for most real-world detectors (GPTZero, Originality, Turnitin, QuillBot). Always read the final text before posting.