GPTinf
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AI humanizer that converts ChatGPT, Claude, and Gemini text into undetectable human writing. Bypasses GPTZero, Turnitin, Originality.ai. 3 modes, API access, from $10/mo.
HumanizerAI (humanizerai.com) is a dedicated AI humanizer and rewriting platform that converts ChatGPT, Claude, and Gemini output into human-sounding text that bypasses GPTZero, Turnitin, Originality.ai, Copyleaks, and ZeroGPT. The tool offers 3 intensity modes (Light, Medium, Bypass), unlimited AI detection scans, and a re-humanize workflow with custom instructions. Paid plans start at $10/month (billed annually) with 10,000 words/month, scaling to 200,000 words/month at $35/month. No publicly documented free tier exists — signup is required before any processing.
| Feature | Details |
|---|---|
| Primary use case | AI text humanization and AI detector bypass |
| Best for | Content creators, students, SEO teams, agencies |
| Access type | Paid subscription (signup required) |
| Rewriting modes | 3 — Light, Medium, Bypass |
| Tone options | Custom instructions on re-humanize (e.g., "more formal", "keep technical terms") |
| Supported languages | English (primary); multilingual support not publicly documented |
| Free tier limit | Not publicly documented |
| No signup required | No |
| Watermark on free | Not applicable |
| Browser extension | No |
| Mobile app | No |
| API availability | Yes (all paid plans) |
| Plagiarism check | Not publicly documented |
| AI detector bypass | Yes — GPTZero, Turnitin, Originality.ai, Copyleaks, ZeroGPT, Winston AI |
| Pricing model | Annual subscription (billed yearly) |
| Paid plans | Starter $10/mo (10K words), Pro $21/mo (50K words), Business $35/mo (200K words) |
Three distinct intensity levels with meaningful differences. Light mode makes subtle adjustments for already-decent content; Medium rewrites sentences at ~85% bypass rate; Bypass mode performs deep restructuring for maximum undetectability. The ability to choose per document reduces unnecessary over-rewriting.
Re-humanize with custom instructions. If the first pass doesn't hit your target AI score, you can send specific instructions like "keep technical terminology" or "make it more conversational" — an iterative capability most competitors don't offer.
Broad detector coverage. HumanizerAI targets 6 major detectors: GPTZero, Turnitin, Originality.ai, Copyleaks, ZeroGPT, and Winston AI — among the most comprehensive multi-detector targeting in the category.
API access on all plans. Unlike many humanizers that lock API behind enterprise tiers, HumanizerAI includes developer API access starting at the $10/month Starter plan.
Document storage included. All paid plans include save-and-organize document history, useful for teams managing large content pipelines.
Light: Minimal sentence-level adjustments. Preserves most of the original wording and structure. Best for already well-written content that needs a light AI-pattern polish. Does not specifically target AI detectors — intended for voice and style preservation.
Medium: Balanced rewriting. Restructures sentences, replaces predictable phrasing, and introduces natural variation. Achieves approximately 85% bypass rate on most detectors according to HumanizerAI's documentation. Recommended starting point for most content types.
Bypass: Maximum transformation. Deep sentence restructuring, aggressive pattern-breaking, and natural variation injection. Achieves highest bypass rates but may significantly shorten and simplify content. Always review output manually when using Bypass mode.
HumanizerAI operates on annual billing with three tiers:
There is no monthly billing option shown publicly. Additional credits can be purchased à la carte. Payment via Stripe; cancel anytime.
Community discussion about HumanizerAI appears in several Reddit threads. In r/AskReddit, one user noted it "helped tweak drafts to sound more like me without failing quick detector checks." In r/ClaudeAI, the founder mentioned a free tier for testing, though this is not reflected on the current pricing page. Agency owners report saving 60% vs. Undetectable AI at comparable quality.
Is HumanizerAI free? No publicly documented free tier exists. Paid plans start at $10/month billed annually. Some Reddit comments reference historical free testing credits, but the current pricing page shows no free option.
Is signup required? Yes. You must create an account before accessing any humanization features.
Does it bypass AI detectors? Yes — it targets GPTZero, Turnitin, Originality.ai, Copyleaks, ZeroGPT, and Winston AI. Results vary by text type and mode; Bypass mode achieves the highest rates.
What languages are supported? English is the primary focus. Multilingual support is not publicly documented.
What is the word limit? Depends on your plan: 10,000 words/month (Starter), 50,000 words/month (Pro), or 200,000 words/month (Business). No per-request word limit is publicly specified.
Is there an API? Yes — developer API access is included on all paid plans starting at $10/month.
Does it preserve original meaning? Light and Medium modes are designed to preserve meaning. Bypass mode may shorten and simplify content significantly — always review output.
Generate high-quality written content tailored to your needs, including articles, blog posts, and marketing materials, ensuring clarity and engagement for your target audience.