# USPS Address 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-api/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Address verification tools | 2% | 18 | 50% | 2 |

## What the models said for it

- "If your business is based in the United States and you only ship domestically, the official USPS Developer Portal offers a completely free address validation API." (Gemini 3.5 Flash, Address verification)

## And against it

- "The USPS is the gold standard for the United States, but it is a poor choice if you operate globally." (GLM 4.7 FlashX, 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.