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Charging policy & account balance

This page covers the billing failure modes: what happens when you hit rate limits, run your balance down, or exceed committed volume. For per-method credit prices, see Pricing; for what each plan includes, see Service plans.

Freemium​

Freemium accounts get 200M API credits monthly under Public rate limits, with no balance to manage.

  • Exceeding the rate limit returns HTTP 429 (or JSON-RPC error -32090, call rate limit exhausted).
  • Rate limiting is temporary and self-restores — back off and retry.
  • Credits renew monthly; no overdraft and no charges.

Premium (pay-as-you-go)​

Premium runs on a prepaid credit balance that you top up manually.

  • There is no automatic top-up. Your balance only increases when you top it up yourself.
  • Overdraft allowance: your balance may go negative down to −$5, and service continues uninterrupted in that range. This gives you a buffer to top up without dropping traffic.
  • Below −$5 the account is suspended shortly after crossing the threshold. While suspended, your API keys reject requests with authentication errors (401/403).
  • Recovery is immediate: top up your balance and the same endpoints and API keys resume working — no re-provisioning needed.

:::tip Set up balance notifications In the Ankr dashboard you can configure balance notifications with your own thresholds, so you get alerted before the balance reaches zero — not after requests start failing. :::

Enterprise​

Enterprise agreements include a committed monthly volume.

  • Usage above the committed volume is billed at the overage rates defined in your agreement.
  • Sustained overage typically triggers a re-pricing conversation with your account manager rather than surprise invoices.
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