Simple, Transparent Pricing
Regex-only redaction is always free and open-source. Upgrade to Pro for higher AI-assist limits.
Free
- Unlimited regex-only redaction (self-hosted)
- Hosted playground access
- AI assist with fair-use limits (anonymous, IP-based)
- Open-source library
Pro API
- 50,000 AI-assist requests/month included
- Overage: £0.20 per 1,000 requests above 50k
- API key for use from your own backend
- Priority rate limiting
- Everything in Free tier
Free vs Pro Comparison
| Feature | Free | Pro |
|---|---|---|
| Regex-only redaction | ✓ unlimited | ✓ unlimited |
| AI-assist | 200/day (IP-based) | 50,000/month |
| API key | ✗ | ✓ |
| Priority limits | ✗ | ✓ |
| Commercial use | ✓ | ✓ |
Privacy & Usage
Regex-only redaction is always free and open-source. You can use it locally without any external services.
AI assist is optional. When enabled, your text is sent to our stateless hosted proxy and then to our model provider for PII detection. We do not store your text.
Code Examples
curl -X POST https://openredaction-api.onrender.com/v1/ai-detect \
-H "Content-Type: application/json" \
-H "x-api-key: YOUR_API_KEY_HERE" \
-d '{"text": "John Smith lives at 10 Downing Street"}'Rate Limits & Usage
Free Tier
- IP-based rate limiting (fair-use limits apply)
- Anonymous usage — API key optional for higher limits
- Lower priority during high traffic periods
- Usage information not provided in response headers
Pro Tier
- 50,000 AI-assist requests per month included in base subscription
- Overage billing: £0.20 per 1,000 requests above 50,000 (billed monthly)
- API key required for authentication
- Priority rate limiting
- Usage tracked and provided in response headers:
X-Usage-Count: Current usage countX-Usage-Limit: Monthly limit (50,000)X-Usage-Reset: Reset date (ISO 8601)
Note: Rate limits apply only to AI-assist requests. Regex-only redaction via the open-source library has no limits and works completely offline.
Frequently Asked Questions
What is the difference between Free and Pro?
Free = anonymous AI assist with IP-based limits + self-hosted regex. Pro = dedicated API key with higher monthly AI limits (50,000 requests/month) and priority rate limiting.
Do you store my data?
No, the hosted API is stateless and does not store raw text in databases. Minimal metadata may be logged for rate limiting and abuse prevention. See our Privacy Policy for details.
Is AI required?
No. Regex-only use via the library is fully local and free. AI assist is optional via the hosted API for better detection on messy or unstructured text.
Can I self-host everything?
Yes! The entire system is open source. You can run it on your own server or infrastructure, with or without AI assist. See our documentation for self-hosting instructions.
How do I use an API key?
After subscribing to Pro, you'll receive an API key. Include it in the x-api-key header when calling the hosted API. You can also use it in the playground by entering it in the API key field.