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Billing & Subscriptions

Manage your CastellanAI subscription and billing.

Subscription Tiers​

Small Business - $9/month​

Best for: Small teams, startups, individual security professionals

FeatureIncluded
Agents5 included
Additional AgentsUp to 15 ($0.50/agent)
Data Retention24 hours
SupportEmail support
AI Analysis✅ Included
Real-time Alerts✅ Included

Viewing Your Subscription​

  1. Go to Settings → Billing
  2. View your current plan details:
InformationDescription
Current TierYour subscription level
Billing CycleMonthly or annual
Next Payment DateWhen your next charge occurs
Agent UsageCurrent usage vs. included
Estimated CostProjected cost for current period

Changing Your Plan​

Upgrading Your Plan​

  1. Go to Settings → Billing
  2. Click Change Plan
  3. Select your new tier
  4. Review the changes
  5. Confirm the upgrade
Immediate Effect

Upgrades take effect immediately. You'll be charged a prorated amount for the remainder of your billing cycle.

What happens when you upgrade:

  • Increased agent quota available instantly
  • Extended data retention starts immediately
  • Enhanced support access activated

Payment Methods​

We accept the following payment methods:

MethodAvailability
Credit CardsVisa, Mastercard, American Express
Debit CardsVisa, Mastercard
Bank TransferEnterprise only

Managing Payment Methods​

  1. Go to Settings → Billing → Payment Methods
  2. Click Add Payment Method or Edit existing
  3. Enter card details securely
  4. Set as default if desired
Security

All payment information is securely processed through Stripe. CastellanAI never stores your full card details.

Invoices​

Access your invoices from Settings → Billing → Invoices.

ActionDescription
Download PDFGet a printable invoice
View HistorySee all past payments
Update EmailChange billing email recipient
📧 Changing Billing Email
  1. Go to Settings → Billing → Billing Contact
  2. Enter the new email address
  3. Click Update

The new contact will receive all future invoices and billing notifications.

Usage & Overages​

Monitoring Usage​

Track your usage in real-time:

  1. Go to Settings → Billing → Usage
  2. View:
    • Agent Count - Current vs. included
    • Data Processed - GB of events analyzed
    • API Calls - If using the API

Overage Charges​

If you exceed your included agents:

TierOverage Rate
Small Business$0.50/agent/month
Medium Business$0.50/agent/month
Enterprise$0.25/agent/month
Avoid Overages

Monitor your usage and upgrade before hitting limits to get better per-agent pricing.

Cancellation​

❌ How to Cancel
  1. Go to Settings → Billing → Cancel Subscription
  2. Select a reason for cancellation
  3. Confirm cancellation

What happens when you cancel:

  • Access continues until end of current billing cycle
  • Data is retained for 30 days after cancellation
  • You can reactivate anytime before data deletion
Data Loss

After the 30-day retention period, all data is permanently deleted.

Questions?​

ContactPurpose
billing@castellanai.comBilling inquiries, invoices, payment issues
sales@castellanai.comEnterprise pricing, custom plans
support@castellanai.comGeneral support