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Sontairo offers Free, Plus, Pro, Ultra, and Enterprise tiers, plus paid product add-ons for Helm CRM, Voice, and Hosting. Enterprise plans are custom and start with [email protected]. Prices below are the standard monthly prices; the exact price is always shown at checkout, and annual billing is available for each paid plan. The dashboard Usage page shows the effective limits for your workspace.

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Plan tiers

Enterprise includes everything in Ultra with custom limits and pricing.

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Product add-ons

Each product is a monthly add-on for the whole account. Your plan tier sets the add-on price: Sontairo Finance is free on every plan — Sontairo collects a 2% platform fee per payment instead.

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BYOK (Bring Your Own Key)

All plans support BYOK: add your own API keys for OpenAI, Anthropic, Google, Cohere, Azure, and other supported providers. Overage handling follows your plan’s BYOK allowance and markup settings.

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Upgrading

  1. Open Billing in the dashboard sidebar
  2. Choose a plan and billing period (monthly or annual), or pick add-ons
  3. Complete the embedded checkout — payment happens right in the dialog, without leaving the app
  4. Your workspace upgrades immediately after a successful payment
To update your card, download invoices, or cancel, see Managing your billing.

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Annual billing

Annual billing is available for paid plans at checkout and saves the equivalent of two months compared to twelve monthly payments.