# USPS: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 2 judge labels across 1 category by 2 of 14 models. Page: https://www.gane.ai/index/gtm/vendors/usps

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Address verification tools](https://www.gane.ai/index/gtm/gtm-data/address-verification/index.md) | 0% | 66 | 100% | 2 |

## And against it

- "USPS's address API is intended for address correction in connection with USPS mailing or shipping—not for sourcing addresses to build a database." (GPT-6 Luna, Address verification)
- "they're usually better viewed as a direct postal tool than a full commercial address-quality platform for most B2B workflows" (GPT-5.4 mini, Address verification)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-5.4 mini | 0 | 0 | 0 | 1 | 1 |
| Gemini 3.5 Flash | 0 | 0 | 0 | 0 | 0 |
| Perplexity Sonar | 0 | 0 | 0 | 0 | 0 |
| Grok 4.20 | 0 | 0 | 0 | 0 | 0 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 0 | 0 | 0 | 0 | 0 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 0 | 0 | 0 | 0 | 0 |
| Kimi K2 | 0 | 0 | 0 | 0 | 0 |
| GLM 4.7 FlashX | 0 | 0 | 0 | 0 | 0 |
| MiniMax M2.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-6 Luna | 0 | 0 | 0 | 1 | 1 |
| Muse Glimmer 30B | 0 | 0 | 0 | 0 | 0 |

## Sources returned with these answers

The sites and pages cited by the answers that named USPS, from 10 of the 10 answers that named it (only the models that return a source list).

### Domains cited

- melissa.com: 5
- smarty.com: 5
- usps.com: 5 (its own site)
- developers.usps.com: 4 (its own site)
- loqate.com: 4
- addressverificationapi.com: 2
- apollotechnical.com: 2
- batchdata.io: 2
- cufinder.io: 2
- developers.google.com: 2

### Pages cited

- https://developers.usps.com/addressesv3: 4
- https://addressverificationapi.com/: 2
- https://apollotechnical.com/address-verification-apis-for-saas-and-b2b-marketing-teams: 2
- https://batchdata.io/blog/best-address-verification-apis-2026-complete-comparison-guide: 2
- https://cufinder.io/blog/api/best-address-validation-apis: 2
- https://melissa.com/address-experts/best-address-verification-apis-complete-comparison: 2
- https://muddyrivernews.com/product-placement/13-best-address-verification-apis-for-e-commerce-and-retail-businesses-in-2026/20260723110219: 2
- https://ourcodeworld.com/articles/read/3580/best-address-validation-apis-for-developers-and-businesses-in-2026: 2

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/gtm.