# SupWriter AI Humanizer

The core SupWriter feature. Rewrites AI-generated drafts so they read as human-written and pass major AI detectors while preserving meaning. Used by students, marketers, freelancers, agencies, and researchers.

Live tool: [supwriter.com/ai-humanizer](https://supwriter.com/ai-humanizer).

## What it does

- Takes AI-generated text as input and returns a humanized version.
- Targets bypass for Turnitin, GPTZero, Originality.AI, Copyleaks, Crossplag, Sapling, ZeroGPT, QuillBot's detector, and 8 other engines (internal 98%+ pass-rate benchmark).
- Preserves the original meaning, factual claims, and structure.
- Configurable tone and purpose.

## Tones

- **General** — neutral, conversational.
- **Casual** — informal, friendly.
- **Formal** — business and report writing.
- **Academic** — essays, papers, dissertations.
- **Persuasive** — sales copy, op-eds, pitches.

## Purposes

- General, essay, blog, email, social.

## Word limits

- **Free** — 500 words per request, English only.
- **Basic** — extended limit, 20 languages.
- **Pro** — 1,500 words per request, 50+ languages, premium tones.
- **Ultra** — 3,000 words per request, every supported language.

## How to use

1. Open [supwriter.com/ai-humanizer](https://supwriter.com/ai-humanizer) or call the API.
2. Paste your AI draft. Pick tone and purpose.
3. Submit. Humanized output appears within seconds for typical-length text.
4. Optionally re-run through the [AI detector](https://supwriter.com/ai-detector.md) to verify the rewrite passes.

## API

- Endpoint: `POST /api/humanize`
- OpenAPI: [/.well-known/openapi/humanize.yaml](https://supwriter.com/.well-known/openapi/humanize.yaml)
- Auth: Supabase-issued JWT as `Authorization: Bearer <token>`.
- Credits: 1 credit per word.

## Use cases

SupWriter publishes per-use-case landing pages with tuned defaults for each scenario:

- [Essays](https://supwriter.com/ai-humanizer-for-essays) · [Dissertations](https://supwriter.com/ai-humanizer-for-dissertations) · [Cover letters](https://supwriter.com/ai-humanizer-for-cover-letters)
- [Blog posts](https://supwriter.com/ai-humanizer-for-blog-posts) · [Email marketing](https://supwriter.com/ai-humanizer-for-email-marketing) · [LinkedIn](https://supwriter.com/ai-humanizer-for-linkedin)
- [Product descriptions](https://supwriter.com/ai-humanizer-for-product-descriptions) · [Social media](https://supwriter.com/ai-humanizer-for-social-media)
- [Academic writing](https://supwriter.com/ai-humanizer-for-academic-writing) · [Non-native speakers](https://supwriter.com/ai-humanizer-for-non-native-speakers)

## Compare

- [vs Undetectable AI](https://supwriter.com/undetectable-ai-vs-supwriter)
- [vs WriteHuman](https://supwriter.com/writehuman-vs-supwriter)
- [vs Humbot](https://supwriter.com/humbot-vs-supwriter)
- [vs NaturalWrite](https://supwriter.com/naturalwrite-vs-suprater)

## Pricing

See [pricing.md](https://supwriter.com/pricing.md).