Smarty vs PostGrid Address Verification
Thirteen of fourteen models named Smarty first on the direct prompt; one named PostGrid Address Verification. Smarty was named by fourteen of the fourteen models and PostGrid Address Verification by thirteen and Smarty carries 69 labels and PostGrid Address Verification 50, so the shares are not directly comparable.
Named in one category this edition.
Named in one category this edition.
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the address verification tools page.
By framing
SmartyFirst choices, of fourteen modelsPostGrid Address Verification
Across every category in the November 2026 Edition, Smarty and PostGrid Address Verification were named in the same answer 130 times, of the 195 answers naming Smarty and the 138 naming PostGrid Address Verification. In those answers PostGrid Address Verification took the first choice ten times and Smarty seventy-seven.
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | | ||
| GPT-5.4 mini | | | | | ||
| Gemini 3.5 Flash | | | | | | |
| Perplexity Sonar | | | | | ||
| Grok 4.20 | | | | | | |
| Mistral Small | | | | | | |
| DeepSeek V4 Flash | | | | | | |
| Llama 4 Maverick | | | | | ||
| Qwen 3.7 Flash | | | | | | |
| Kimi K2 | | | | | | |
| GLM 4.7 FlashX | | | | | ||
| MiniMax M2.5 | | | | |||
| GPT-6 Luna | | | | | ||
| Muse Glimmer 30B | | | | |
Smarty PostGrid Address Verification first choice named as an alternative argued againstblank: not namedEach cell is one answer, Smarty on the left and PostGrid Address Verification on the right.The direct prompt
Smarty first, PostGrid Address Verification an alternative
13 of 14 modelsPostGrid Address Verification was named in the answer but not as the choice, or not at all.PostGrid Address Verification first, Smarty an alternative
1 of 14 modelsSmarty was named in the answer but not as the choice, or not at all.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
Smarty78%#1 of 6PostGrid Address Verification14%#2 of 6Smarty73%#1 of 7PostGrid Address Verification10%#2 of 7Smarty32%#1 of 7PostGrid Address Verification18%#3 of 7What the models said about Smarty
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.
“Smarty's international accuracy can trail its domestic performance in some cases” GPT-5.4 mini · negative prompt · soft negative
“Smarty is widely considered the top choice for mid-market companies needing reliable, lightning-fast API performance and straightforward pricing.” Gemini 3.5 Flash · direct prompt · first choice
“Widely considered the market leader for general API use. It is known for high accuracy, competitive pricing, and excellent CASS certification.” GLM 4.7 FlashX · comparative prompt · first choice
“This makes Smarty the cheapest predictable monthly option for US-focused companies that need real-time validation and autocomplete.” Muse Glimmer 30B · budget prompt · first choice
What the models said about PostGrid Address Verification
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of four in this category shown.
“PostGrid offers comprehensive address verification services with the following characteristics: Global coverage across 250+ countries and territories” MiniMax M2.5 · comparative prompt · first choice
“Rating: 5.0/5 (28 reviews)... Best For: Enterprise-scale address verification with developer support and native integrations.” Mistral Small · comparative prompt · first choice
“PostGrid Address Verification is best for cost-efficient, API-first address validation for mid-market teams” Claude Haiku 4.5 · direct prompt · first choice
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.