# USPS Address Validation API: how AI models rank it, October 2026

GTM AI Recommendation Index, October 2026 Edition. Named in 2 judge labels across 1 categories by 2 of 14 models. Page: https://gtm-ai-index.com/vendors/usps-address-validation-api/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Address verification tools | 0% | 74 | 50% | 2 |

## What the models said for it

- "For US-only businesses, the USPS API is a reliable and cost-effective option." (Mistral Small, Address verification)

## And against it

- "USPS says its Address Validation API is for USPS shipping or mailing services—not for sourcing addresses to build a database." (GPT-6 Luna, Address verification)

## Record

- Method: https://gtm-ai-index.com/methodology/
- Raw judge labels and full responses: https://gtm-ai-index.com/data/
- License: CC BY 4.0. Cite as GTM AI Recommendation Index, October 2026 Edition, gtm-ai-index.com.