COMPARISONPrices checked on 17 October 2026

How much does an address validation API cost?

The prices published by five services, checked on their official pages on 17 October 2026 and brought down to the price of one validation. And, honestly, when to choose which.

Prices, service by service

Address Validator

Free: Trial: 14 days, 100 validations, no credit card
Paid: Starter: $33 a month for 2,000; Pro: $90 a month for 10,000; pay per call: 0.02 USDC, no account (x402)
Per validation: $0.0090 to $0.0165
Good for: AI agents (x402 and MCP), and shops that want to try without a credit card, billed in euros; the check is optimised for the United States

Approximate prices. Billed in euros: €29 and €79 per month, excl. VAT (exchange rate of September 2026).

Google Address Validation API

Free: 5,000 validations per month
Paid: $17 per 1,000 up to 100,000 a month, then $13.60, $10.20, $5.10 and $1.28
Per validation: $0.017
Good for: under 5,000 validations a month, if you are already on Google Cloud (account with billing enabled)

Source: developers.google.com/maps/billing-and-pricing/pricing

PostGrid (US and Canada)

Free: 500 free credits
Paid: Essential: $20 a month for 2,000; Business: $45 a month for 10,000; international from $84 a month
Per validation: $0.0045 to $0.01
Good for: the lowest price per validation for the United States and Canada, at volume

Source: postgrid.com/pricing-address-verification

Smarty (United States)

Free: trial of 1,000 lookups over 42 days, no credit card
Paid: Professional: $17 a month for 1,000; $50 a month for 5,000; yearly, $552 for 60,000
Per validation: $0.0092 to $0.017
Good for: US addresses, with plans up to millions of lookups

Source: smarty.com/pricing

Geoapify

Free: 3,000 requests per day
Paid: API 10: $59 a month for 10,000 requests per day
Per validation: ≈ $0.0002
Good for: very low-cost geocoding and address lookup; it is not postal validation

Source: geoapify.com/pricing

When to choose which

You ship mostly to the United States and Canada, at volume, at the lowest price: PostGrid.
Fewer than 5,000 validations a month and a Google Cloud account: Google's free tier.
An AI agent that must pay on its own, per call, with no account: Address Validator, over x402 and MCP.
A shop that wants to try without a credit card and be billed in euros: Address Validator.
Very low-cost geocoding, without postal validation: Geoapify.

How we calculate

Price per validation = monthly plan price ÷ validations included, on the most common paid plans. Taxes excluded. Each price is in the currency the service publishes. Prices change: check each service's page before you choose.

Our pricing in detail Address validation for AI agents Test an address for free