# SupWriter — Frequently Asked Questions

Answers to the most common questions about SupWriter's AI humanizer, AI detector, paraphraser, and grammar checker. Live FAQ: [supwriter.com/faq](https://supwriter.com/faq).

## How does SupWriter work?

SupWriter uses AI algorithms trained on millions of text samples to rewrite content. It analyzes patterns that AI detectors flag and restructures sentences to sound more human while preserving the original meaning.

## Does SupWriter bypass Turnitin and other AI detectors?

Yes. SupWriter is specifically designed to bypass major AI detection tools including Turnitin, GPTZero, Originality.AI, Copyleaks, Crossplag, Sapling, ZeroGPT, and others. Internal benchmarks maintain a 98%+ success rate across these detectors.

## How much does SupWriter cost?

Free users get a starting word allotment. Paid plans (Basic, Pro, Ultra) add higher word limits per request, more languages, premium tones, and monthly credit refills. See [pricing.md](https://supwriter.com/pricing.md) or [supwriter.com/pricing](https://supwriter.com/pricing) for live amounts.

## Do you offer yearly plans?

Yes. Yearly plans give upfront credits for the year at a discounted rate compared to monthly billing.

## What languages does SupWriter support?

50+ languages on Pro and Ultra, including English, Spanish, French, German, Japanese, Korean, Chinese, Arabic, Hindi, and more. Each language has specialized humanization algorithms. Basic supports 20 languages; Free is English-only.

## What's the longest text I can humanize at once?

Per-request word limits: 500 (Free), 1,500 (Pro), 3,000 (Ultra). For longer essays, split into sections or upgrade.

## I reached my word limit. How can I extend it?

Upgrade to a higher plan. Pro and Ultra include higher per-request word limits and larger monthly credit allotments.

## Can I see previous humanizations?

Yes. All humanizations, paraphrases, and grammar checks are saved to your account and accessible from the History page.

## How do I cancel my subscription?

Cancel anytime from account settings → Billing. Access continues until the end of the current billing period. Partial-month refunds are not provided.

## Does Google penalize AI-generated content?

Google's guidelines focus on content quality and value, not how it was created. Low-quality or spammy AI content can be penalized; SupWriter improves the naturalness and readability of AI drafts so they better meet quality standards.

## Is there an API?

Yes. Four authenticated HTTP APIs: `/api/humanize`, `/api/paraphrase`, `/api/grammar-check`, `/api/aidetect/v2`. OpenAPI specs are published under `/.well-known/openapi/*.yaml`. See [index.md](https://supwriter.com/index.md) for the agent-facing summary.

## Contact

For anything not covered: support@supwriter.com.