Every category where a model named PostGrid Address Verification for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.

Category	Function	Share	Rank	Negative rate	Labels	Quadrant	Since September 2026
Address verification tools	GTM data and infrastructure	8%	2 of 108	3%	39	accepted challenger

Movement

This is the first edition on this tier, so no move can be computed for PostGrid Address Verification yet. From the next edition this section shows, per buyer segment and per category, whether its share moved by more than the measured noise floor.

By model

How each model treated PostGrid Address Verification across every prompt where it was named for a mid-market B2B company. Fourteen models, six prompts per category.

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Model	First choice	Alternative	Mention	Negative	Labels
Claude Haiku 4.5	3	1	0	0	4
GPT-5.4 mini	0	1	0	0	1
Gemini 3.5 Flash	0	2	0	0	2
Perplexity Sonar	0	3	0	0	3
Grok 4.1 Fast	1	4	1	0	6
Mistral Small	0	2	0	0	2
DeepSeek V4 Flash	0	3	1	0	4
Llama 4 Maverick	0	1	1	0	2
Qwen 3.7 Flash	0	1	0	0	1
Kimi K2	0	1	1	0	2
GLM 4.7 FlashX	0	3	1	1	5
MiniMax M2.5	0	3	1	0	4
GPT-6 Luna	0	0	0	0	0
Muse Glimmer 30B	1	1	1	0	3

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.

FramingLabels by classFirst choices

Direct26 labels4

Paraphrase20 labels4

Comparative29 labels3not counted in share

Budget-constrained16 labels4

Scale-constrained14 labels1

Negative10 labels3not counted in share

First choiceAlternativeMentionNegative115 labels in all, every segment counted; 13 of the 19 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“PostGrid is a strong option for SaaS and B2B teams because it combines address verification, autocomplete, bulk list cleanup, international coverage, API access, and dashboard-based workflows in one platform.” Claude Haiku 4.5 · Address verification · direct prompt · first choice

“PostGrid's pay-as-you-go model allows you to get started without investing anything, which is ideal for companies with truly limited budgets” Claude Haiku 4.5 · Address verification · budget prompt · first choice

“Best budget option (US/Canada): PostGrid - $20/mo for 2,000 lookups” Muse Glimmer 30B · Address verification · budget prompt · first choice

“start with trials from established names like Smarty or PostGrid” Grok 4.1 Fast · Address verification · negative prompt · first choice

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

“PostGrid has been flagged in independent reviews for specific reliability issues.” GLM 4.7 FlashX · Address verification · negative prompt · soft negative

Named alongside

The products named in the same answers as PostGrid Address Verification, over the 115 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and PostGrid Address Verification was named but was not.

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ProductSame answerTook the first choice insteadHead to head

Smarty102 of 11552Compare →

Melissa58 of 1154Compare →

Loqate52 of 1154Compare →

Lob36 of 1151Not among the top eight

Experian Data Quality18 of 1150Not among the top eight

Google Address Validation API15 of 1153Compare →

Melissa Global Address Verification14 of 1156Not among the top eight

Informatica Data as a Service9 of 1151Not among the top eight

Radar9 of 1150Not among the top eight

Melissa Global Address Verification API7 of 1155Not among the top eight

A head-to-head page exists where both products are among a category's top eight. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named PostGrid Address Verification. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, five of the fourteen in this edition, so these counts come from 115 of the 115 answers that named PostGrid Address Verification and are not a share of its labels.

Domains cited

postgrid.comYour site81

melissa.com76

smarty.com74

guideflow.com73

g2.com65

opencart.com60

apollotechnical.com53

thectoclub.com41

batchdata.io36

geopostcodes.com34

512 of the 593 domain citations in answers naming PostGrid Address Verification came from somebody else's page.

Pages cited

guideflow.com/blog/address-verification-software73

opencart.com/blog/top-12-address-verification-apis-and-software-compared-for-202660

melissa.com/address-experts/best-address-verification-apis-complete-comparison59

apollotechnical.com/address-verification-apis-for-saas-and-b2b-marketing-teams53

thectoclub.com/tools/best-address-verification-software41

postgrid.com/address-verification-software/best-address-verification-software37

batchdata.io/blog/best-address-verification-apis-2026-complete-comparison-guide34

postgrid.com/address-verification-api/best-address-verification-api32

Pages are listed as the models cited them.

Search and answers

postgrid.com is not in Google's top ten for any of the category's searches. In the answers, PostGrid Address Verification takes 8% of first choices and Smarty takes 47%.

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In search

Google, US estimates

Position for “address verification tool”

–

not in the top ten

Position for “best address verification tool”

–

not in the top ten

Searches for its name, Google: 90 a month (“postgrid address verification”)
AI search demand for its name, est.: 1 a month
Organic visits to its site: about 196,042 a month
Searches its site ranks for: 35,880 · 296 in the top three
Sites linking to it: 3,667
Paid Google search: 3 searches its ads show for, about 31 clicks and $765 a month (estimate)

Ads on GoogleDetailLess

120+ ads · 91 text, 29 image · 120 shown in the last 30 days

First shown April 2023, as PostGrid INC., verified. Ads started 2025-10 to 2026-09: 36 in the year, 84 before.

On Google's pages: 1 2 3 4

In answers

This edition

Share of first choices

rank 2 of 108 in address verification

Segment leader

47%

Smarty

First choices: 13 across its categories
Named in: 115 answers
Its own site cited: in 115 of the answers that named it

Search figures are US estimates from DataForSEO, read September 28, 2026; AI search demand is its modeled, directional estimate, not a count of queries to any assistant. The answers are this edition's. Two measurements side by side: neither is read as the cause of the other.

What it publishes

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Addresses on postgrid.com

2,702

subdomains included

Content

864

counted in the table below

Documentation

Product · Integration

6 · 891

Kind	Pages	Last 90 days	Latest	Categories named
Blog	713	49	2026-09-25	Direct mail, CRM
Glossary or explainer	65	9	2026-09-23	Direct mail
Report or ebook	34	8	2026-07-30
Comparison	32	11	2026-09-22	Direct mail
Case study	9	0	2026-04-12
Webinar or virtual event	6	0	2026-05-07	Direct mail
Template or tool	4	0	2025-04-04
News or press	1	0	2026-04-14

Most recent

2026-09-25How address verification fraud prevention protects your business blog
2026-09-24What does rejected addresses mean blog
2026-09-24Medicare direct mail marketing scaling guide blog
2026-09-23How to clean your ncoa and cass mailing lists with postgrid blog
2026-09-23What is a non standard address glossary or explainer
2026-09-23Difference between brochure flyer pamphlet booklet blog

How it is countedHide how it is counted

Every page postgrid.com exposes, subdomains included. Kind is read from the address and title. The last 90 days, the latest date and the twelve months count pages by when they were published, from the site's feeds, a date in the address, or the page's own publication date, read from up to a hundred of its most recently changed pages; a page that says only when it last changed is counted in its kind but not in when, so the recent counts are a floor, and a kind none of whose pages gives a publication date reads undated. Of its titles that name a category, most name direct mail (30); 0 name the category the models place it in. An event counts as online when its address or title says so (webinar, on demand, virtual or online summit); a conference, summit, trade show, expo or roadshow that does not say so is counted as a conference or event, which on a vendor's site is mostly in person. Read September 29, 2026.

Names read as PostGrid Address Verification

What the judge wrote, as written, with how often. The vendor table decides that these count as PostGrid Address Verification; a claim can dispute any of them.

PostGrid 35Postgrid 1

Follow PostGrid Address Verification

An email the morning each edition publishes: where this product moved, where it held, and by how much against the noise floor. One address, confirmed by a click; a stop link in every email.

Already following? Everything you follow, with a stop for each.

Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when PostGrid Address Verification's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as PostGrid Address Verification, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

What a new claim receivesHide what a new claim receives

A new claim receives the current edition's vendor brief for PostGrid Address Verification by email, built from the raw record of the edition. It shows:

where PostGrid Address Verification is named, by buyer and by framing, and which cells hold its first choices;
the claims the models make when they name it, ranked, with the strongest and the weakest quoted;
its vocabulary against the segment leader's, and the pages the models cited;
who was chosen in the answers that did not name PostGrid Address Verification, and every reason the record gives;
a battlecard for each top rival: the head-to-head split, why they win, and the reservation quoted against them;
one page of published figures cleared to show a buyer.

Badges

Wins only: a badge exists where PostGrid Address Verification is ranked in a category's top three this edition. Three sizes, one file each, light and dark; the code is under each.

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PostGrid Address Verification is among the products AI models recommend first in Address verification tools this edition. Each badge says so in the buyer's words, names the edition, and links to the standing. The next edition issues a new badge; this one stays true as a record of October 2026.

Wide · 320 × 104 Website, beside other badges

Show the code

<a href="https://gtm-ai-index.com/gtm-data/address-verification/"><img src="https://gtm-ai-index.com/badges/2026-10/postgrid-address-verification--address-verification-wide.svg" alt="Among AI models' top three in Address verification tools, October 2026 Edition, GTM AI Recommendation Index" width="320" height="104"></a>

Copy the code as it is. The link is part of the badge: it points at the Address verification tools standing, where the claim can be checked.

Square · 240 × 240 LinkedIn, slides

Show the code

<a href="https://gtm-ai-index.com/gtm-data/address-verification/"><img src="https://gtm-ai-index.com/badges/2026-10/postgrid-address-verification--address-verification-square.svg" alt="Among AI models' top three in Address verification tools, October 2026 Edition, GTM AI Recommendation Index" width="240" height="240"></a>

Copy the code as it is. The link is part of the badge: it points at the Address verification tools standing, where the claim can be checked.

Compact · 200 × 56 Email signature, footer

Show the code

<a href="https://gtm-ai-index.com/gtm-data/address-verification/"><img src="https://gtm-ai-index.com/badges/2026-10/postgrid-address-verification--address-verification-compact.svg" alt="Among AI models' top three in Address verification tools, October 2026 Edition, GTM AI Recommendation Index" width="200" height="56"></a>

Copy the code as it is. The link is part of the badge: it points at the Address verification tools standing, where the claim can be checked.

Badges read on light and dark pages. Alt text carries the claim, the category, the edition and the index, so it stays a citation where the image does not load.