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Simple, transparent pricing

Free to start.
$19/mo when you scale.

100 free detections every month — no credit card, no signup friction. Upgrade to Pro when you're ready for unlimited API access and SLA-backed reliability.

Free

$0forever

For individuals and explorers

Get your API key
  • 100 API requests / month
  • Text AI detection
  • Image AI detection
  • JSON response with confidence score
  • Ensemble of 7 detectors
  • No credit card required
  • Community support
  • Unlimited requests
  • Priority support
  • Uptime SLA
  • Usage analytics dashboard
Most popular

Pro

$19per month

For teams and production apps

Upgrade to Pro
  • Unlimited API requests
  • Text AI detection
  • Image AI detection
  • JSON response with full breakdown
  • Ensemble of 7 detectors
  • Priority support (< 24h response)
  • 99.9% uptime SLA
  • Usage analytics dashboardComing soon

Full plan comparison

FeatureFreePro
Monthly API requests100Unlimited
Text detection✓✓
Image detection✓✓
Confidence score + breakdown✓✓
Ensemble of 7 detectors✓✓
JSON API response✓✓
Priority support—✓
99.9% uptime SLA—✓
Usage analytics dashboard—Coming soon
Credit card requiredNoYes

Integrate in 2 minutes

1. Register (free)

curl -X POST https://project-prometheus-production.up.railway.app/api/v1/auth/register
-H 'Content-Type: application/json'
-d '{"email":"you@example.com"}'

2. Detect

curl -X POST https://project-prometheus-production.up.railway.app/api/v1/analyze
-H 'X-API-Key: your_key_here'
-d '{"text":"Your content here..."}'

Frequently asked questions

Do I need a credit card to start?
No. The Free plan requires only an email address. You get 100 API requests per calendar month with no payment information required.
What counts as one API request?
Each call to /api/v1/analyze (text or image) counts as one request. Calls to /health, /stats, and other metadata endpoints are free and do not count toward your limit.
What happens when I hit 100 requests on the Free plan?
The API returns a 429 response with a clear error message. Your limit resets on the 1st of every calendar month. You can upgrade to Pro at any time to remove the limit immediately.
Can I use Airno in a production application?
Yes. The API is designed for programmatic use. The Pro plan includes a 99.9% monthly uptime SLA and priority support, making it suitable for production workloads.
How do I authenticate API requests?
Pass your API key in the X-API-Key header with every request. Register at /api/v1/auth/register to get a key instantly.
Can I cancel the Pro plan anytime?
Yes. Cancel anytime from Stripe — no lock-in, no cancellation fees. You keep Pro access until the end of the billing period you already paid for.

Ready to detect AI content at scale?

Start free — no credit card needed. Upgrade when you need more.

Get free API keySee accuracy stats