# USPS Web Tools API: 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-web-tools-api

## 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% | 18 | 0% | 2 |

## What the models said for it

- "Always use official APIs like the USPS Web Tools API directly if possible." (Grok 4.20, Address verification)
- "Completely free direct from the postal service." (Gemini 3.5 Flash, 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 | 0 | 0 |
| Gemini 3.5 Flash | 0 | 1 | 0 | 0 | 1 |
| Perplexity Sonar | 0 | 0 | 0 | 0 | 0 |
| Grok 4.20 | 1 | 0 | 0 | 0 | 1 |
| 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 | 0 | 0 |
| Muse Glimmer 30B | 0 | 0 | 0 | 0 | 0 |

## Sources returned with these answers

The sites and pages cited by the answers that named USPS Web Tools API, from 3 of the 4 answers that named it (only the models that return a source list).

### Domains cited

- g2.com: 2
- smarty.com: 2
- address.cc: 1
- aiprise.com: 1
- capterra.com: 1
- capterra.ie: 1
- cloud.google.com: 1
- goodvat.com: 1
- ledger.com: 1
- mastercard.com: 1

### Pages cited

- https://address.cc/vendors/smarty: 1
- https://aiprise.com/blog/role-of-address-verification-in-fraud-prevention: 1
- https://capterra.com/address-verification-software: 1
- https://capterra.ie/directory/33215/address-verification/software: 1
- https://cloud.google.com/free: 1
- https://g2.com/articles/best-address-verification-software: 1
- https://g2.com/products/smarty-smarty/pricing: 1
- https://goodvat.com/blog/goodvat-vs-google-address-validation: 1

## 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.