Google Address Validation vs Shippo: API comparison

The short answer

Google exposes component verdicts and optional CASS processing. Shippo v2 separates the original address, recommended address and reasons for changes. Keep the customer-confirmation step explicit in either integration; neither a suggestion nor a coordinate is proof of a completed delivery.

Choose by the task you need to complete
Provider	A good reason to choose it	Important caveat
Google Address Validation	A checkout that needs component-level verdicts and a confirm-or-correct flow inside an existing Google Maps Platform integration.	Country coverage and billing SKU matter. US/PR CASS processing must be explicitly enabled; a response or coordinate alone does not establish delivery or identify an occupant.
Shippo	A checkout or shipping system that wants explicit address-change reasons before creating labels in the same platform.	The v2 validation request is GET and differs from legacy Address creation with validate=true. A partially_valid result and a recommended correction need a decision, not an automatic success label.

Side-by-side differences

Google Address Validation vs Shippo: documented interfaces, not benchmark scores
Requirement	Google Address Validation	Shippo
Validation approach	Address component validation plus formatting and geocode	Validation with a recommended corrected address
Coverage boundary	Supported-country list; optional CASS only for US/PR	US/global service; confirm country and account coverage
Decision signal	Verdict granularity and component confirmation signals	Validation value/reasons plus recommendation confidence
Apartment/unit handling	Inspect subpremise and missing/unconfirmed component signals	Preserve address_line_2 and review changed_attributes
Workflow	One address per validation request; confirm changes in the UI	v2 GET validation; legacy POST validation is different
Cost driver	Validation request SKU, tier and Cloud project quota	Standalone service entitlement and agreed address volume

Pricing: make the units comparable

Billing model and plan checks
Provider	Billing model	What to check
Google Address Validation	Pay-as-you-go validation SKUs	Google documents per-request Pro and Enterprise SKUs and requires billing on the Cloud project. Check the actual SKU, included allowance and current region-specific pricing rather than reusing a Geocoding API price.
Shippo	Address Validation access and pricing through sales	Shippo directs Address Validation API pricing and access inquiries to sales. Do not substitute shipping-label fees or assume the standalone v2 service is included in an existing token's entitlement.

For 10,000 address checks, include retries and customer edits, not just completed orders. Count input addresses rather than batch HTTP calls. Compare the same country mix and postal evidence; a geocoding credit and a delivery-verification check do not buy the same result.

For a buying decision, calculate total spend divided by accepted outputs at your expected volume. Keep free evaluation access, paid production access, annual commitments and overages separate. We have not measured a cost or speed winner for this pair.

What changes in the integration?

Provider endpoints and input mapping
	Google Address Validation	Shippo
Method and URL	`POST https://addressvalidation.googleapis.com/v1:validateAddress`	`GET https://api.goshippo.com/v2/addresses/validate`
Authentication	API key or supported OAuth token; restrict credentials to the intended API	Authorization: ShippoToken token
Inputs	JSON address with addressLines and recommended regionCode; optional enableUspsCass for US/PR	address_line_1, optional address_line_2, city_locality, state_province, postal_code and country_code
Output	Validation result with verdict, address components, geocode and postal data where available; response identifier for follow-up.	original_address, recommended_address, analysis.validation_result, changed_attributes and geodata when available.

Google Address Validation: migration check

Map component confirmation and verdict fields rather than inventing one universal valid flag. Do not substitute the Geocoding API or silently enable CASS on arbitrary generated addresses.

Shippo: migration check

Replace legacy street1/city/zip mapping with v2 address_line_1/city_locality/postal_code. Parse analysis.validation_result rather than the legacy validation_results.is_valid field, and keep addresses out of request logs.

How to test them fairly

Use provider-approved test fixtures or addresses you have permission to process. Include international formats, accents, rural addresses and unit numbers. Do not generate arbitrary postal addresses or send private customer records without authorization.
Define expected outcomes for known-good records and approved negative cases before the run. Keep unsupported countries and missing evidence separate from invalid addresses.
Measure component correction, unit preservation and false rejection separately. A geocoder's building-level match is not confirmation of postal deliverability or of the person living there.
Record whether the API suggests a correction, confirms a delivery point or merely finds a location. Require customer confirmation when a suggested change could route a parcel elsewhere.
Count billed address checks, repeated checkout attempts, optional geocoding and batch records. Compare latency and cost per accepted decision on the same country mix. No validation result guarantees a successful future delivery.

Record the plan, request settings, time window and acceptance rules with every run. That makes a later result interpretable when a vendor changes a model, source set or pricing tier.

Prefer a common request format?

All Them APIs · Address Validation APIsPOST /api/v1/address-validation/validate

Review the request contract and tell us the coverage you need. Access requires enablement; this endpoint does not execute or bill requests yet.

View endpoint and request access

Sources and review dates

Documentation reviewed October 28, 2026. These are integration and plan comparisons, not measured speed or accuracy rankings. Availability, licensing and prices should be confirmed for the chosen plan.

Corrections: email faizank@docsalot.dev with an official source.