API Pricing
The cheapest, fastest detect / humanization API
The industry's lowest per-word rates at the fastest speeds. One shared credit pool, overage at the same rates, no hidden fees.
Undetectable by major AI detectors
Our humanizer is designed to pass leading AI detection platforms.
Everything included with your plan
- Generous production rate limits
- Real-time NDJSON streaming
- GPU-powered infrastructure
- Dedicated support
- White-label & redistribution
- Non-expiring credits
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API
API Request Examples
Ready-to-use code snippets for integrating our APIs into your application
AI Article Detection (API)
Endpoint
https://api.unfox.ai/api/text/api_checkHeaders
Body (form-data)
curl --location 'https://api.unfox.ai/api/text/api_check' \
--header 'Language: en' \
--header 'Authorization: Bearer YOUR_API_TOKEN' \
--form 'content="我与父亲不相见已二年余了，我最不能忘记的是他的背影。这二年的光阴，说长不长，仿佛只是几个寒暑的交替；说短却也不短，足足有七百多个日夜，足以让院角的梅树抽发两回新枝，也足以让许多记忆，像旧宣纸上的墨迹，渐渐晕开，变得模糊。然而，独独那个背影，却像用刀子深深地镌刻在我心版上的一般，非但没有随着时日淡去，反倒愈发清晰、愈发沉重起来。"'Enterprise
Need custom rates or higher volume?
We offer custom per-word pricing for teams processing millions of words per month.
Custom per-word rates
Dedicated engineering support
Priority rate limits
Contact Sales
Our team will respond within 24 hours.
500M+
Words Processed
50+
Enterprise Clients
<2s
Avg Response
FAQ
Frequently Asked Questions
Credits are shared between the Humanizer API and Detection API. You can use any combination of both services from a single balance. Credits do not expire.
Once you exhaust your credit balance, overage usage is billed at the same per-word rate with no additional markup.
No. Overage usage is billed at the same per-word rate as your plan. There are no hidden fees or tiered pricing surprises.
After subscribing to an API plan, you can generate API keys in your dashboard. Full documentation is available in our developer docs.
Yes, you can cancel your API plan at any time. You'll continue to have access until the end of your billing period.
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