Tested against the strictest detectors.
Pass rates on 10,000+ unique English texts, scored independently by six detectors.
Start building in minutes.
Three steps from signup to first humanized request. No setup, no SDK required.
- 01
Buy words
Purchase a word pack from the developer dashboard. No subscription, no commitment. Words never expire.
- 02
Create an API key
Generate a key from the dashboard. Use it as a Bearer token in your requests.
- 03
Humanize text
Send a POST request with your text. Get back humanized output that passes AI detection.
Built for production.
Everything you need to ship humanization as a feature in your product.
Stealth
Powered by Ghost-1, our proprietary humanization engine. Undetectable on the toughest AI detectors.
100+ languages
Automatic language detection. Send text in any language, get humanized output back.
Fast and reliable
Average response around 7 seconds. If a request fails, your words are refunded automatically.
Simple billing
Pay per word. No subscriptions. Buy words, share them across all keys. Words never expire.
The API at a glance.
The numbers behind the integration. Endpoints, limits, and policies.
- Endpoint
- POST /v1/humanize
- Auth
- Bearer <API_KEY>
- Avg latency
- ~5s / 100 words
- Rate limit
- 50 req/min/key · 60/min/IP
- Languages
- 100+ (auto-detected)
- Max keys
- 5 active per account
- Refund policy
- Failed requests auto-refund
- Billing
- Pay-per-word · no subscription
What developers are building.
From browser extensions to enterprise content pipelines.
Content platforms
Humanize AI-generated drafts before publishing. Integrate into your CMS or editorial workflow.
Writing tools
Add humanization as a built-in feature. Give your users one-click access to stealth output.
Browser extensions
Humanize text on any website. Build the extension, we handle the processing.
Internal automation
Process bulk content through your pipeline. Batch humanize thousands of documents at scale.
Frequently asked.
You buy word packs upfront. Each API request deducts the number of input words from your balance. Words are shared across all your API keys and never expire.
If the humanization process fails for any reason, the words reserved for that request are automatically refunded to your balance.
Up to 5 active keys per account. Each key has its own rate limit but shares your account's word balance.
100+ languages with automatic detection. You don't need to specify the language. The API detects it from the input text.
Default is 50 requests per minute per key and 60 per minute per IP. Contact us for higher limits.
No. The API uses one-time word purchases. Buy what you need, use it whenever. No recurring charges.
From AI generated content to human-like text in a single click
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