Index › GTM › GTM data and infrastructure › Address verification › Enterprise · October 2026 Edition
Address verification tools for enterprise buyers
Asked as “address verification tool”, and as “address validation API”, on behalf of an enterprise B2B company. 53 first choices recorded across the direct, paraphrase, budget and scale prompts, fourteen models each. Added to the October 2026 Edition on October 4, 2026.
Standing · first-choice share
32%
Contested · Smarty 30%
32Melissa Global Address Verification30Smarty13Loqate25others
32% of first choices, contested.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment; they sit side by side and are never added together.
The standing
Share is the count of first choices across the direct, paraphrase, budget and scale prompts, over all fourteen models, for an enterprise B2B company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
Show the two products at 0%, ordered by negative rate
Bars are the share of first choices, 0 to 100Every product with at least 10 labels here. Every product name links to its product page.
Google Address Validation API is made by Google, whose model Gemini 3.5 Flash is in the set. On the four share prompts that model made it the first choice zero times of 4; the other thirteen models zero times of 52. Lab treatment is defined on the method page; the row is marked, not excluded.
Head to head
Smarty vs Melissa Global Address VerificationSmarty vs PostGrid Address VerificationSmarty vs Loqate
Head-to-head pages are published for mid-market buyers, so these open on mid-market figures, not enterprise.All fifteen head-to-head pages: the top six products, each against each
Smarty vs Google Address Validation APISmarty vs Experian Address ValidationMelissa Global Address Verification vs PostGrid Address VerificationMelissa Global Address Verification vs LoqateMelissa Global Address Verification vs Google Address Validation APIMelissa Global Address Verification vs Experian Address ValidationPostGrid Address Verification vs LoqatePostGrid Address Verification vs Google Address Validation APIPostGrid Address Verification vs Experian Address ValidationLoqate vs Google Address Validation APILoqate vs Experian Address ValidationGoogle Address Validation API vs Experian Address Validation
Recommended versus criticized
Every product with at least 10 labels here, on both axes. The 30% line names a quadrant, not the verdict above: that one needs more than 40%.
Criticized challengerCriticized default
Negative label rate →
01
02
03
04E05
06
07G08
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative50%
Key
01Melissa Global Address Verification32%
Melissa Global Address Verification32%02Smarty30%
Smarty30%03Loqate13%
Loqate13%04PostGrid Address Verification6%
PostGrid Address Verification6%05Experian Address Validation4%
06GeoPostcodes4%
GeoPostcodes4%07Lob0%
Lob0%08Google Address Validation API0%
What they warned about
Three of fourteen models held their first choice under the paraphrase. Claude Haiku 4.5, GPT-5.4 mini, Gemini 3.5 Flash, Perplexity Sonar, Grok 4.20, Mistral Small, Kimi K2, GLM 4.7 FlashX, MiniMax M2.5, GPT-6 Luna and Muse Glimmer 30B changed. A high negative share on a product with few labels is a warning. A low share on a product with many labels is salience, not sentiment.
Google Address Validation API
67%
8 of 12 labels negative · 6 of 14 models · 2 hard negative
“it is rarely the best choice for a large B2B enterprise's core databases due to restrictive terms of service” Gemini 3.5 Flash, paraphrase prompt
OpenStreetMap
100%
5 of 5 labels negative · 5 of 14 models · 5 hard negative
“Data quality and structure can be inconsistent, requiring significant engineering effort for integration and maintenance.” Mistral Small, negative prompt
USPS Address Validation API100%
5 of 5 labels negative · 5 of 14 models · 5 hard negative
“USPS is U.S.-only and lacks international coverage; missing rural addresses; no coordinates. It is insufficient for a global enterprise footprint.” Muse Glimmer 30B, negative prompt
Smarty10%
6 of 63 labels negative · 5 of 14 models · 1 hard negative
“large enterprises should be cautious about or avoid the following address verification tools” Mistral Small, negative prompt
What they cite
Fourteen of the fourteen models returned a source list in this edition: five return the pages they cited and nine the search results they consulted.
Sites the answers cite
80 of 84 answers in this category came back with a source list, from 14 of 14 models: citations where the model returns them, or the search results it consulted. 1182 links across 213 sites, every framing counted. Ranked by the number of answers carrying the site or page. None of the 252 answers across every segment cited this index's own page for the category.
vendor site · Melissa56 answers · 100 citations · 14 models
vendor site · PostGrid52 answers · 94 citations · 12 models
vendor site · Smarty50 answers · 119 citations · 13 models
vendor site · Guideflow37 answers · 37 citations · 12 models
35 answers · 54 citations · 12 models
vendor site · OpenCart35 answers · 35 citations · 12 models
33 answers · 33 citations · 11 models
25 answers · 25 citations · 12 models
vendor site · GeoPostcodes23 answers · 33 citations · 11 models
22 answers · 24 citations · 11 models
21 answers · 36 citations · 10 models
vendor site · BatchData21 answers · 24 citations · 12 models
Pages the answers cite
The ten pages named in the most answers, by full address. A page here is one the models returned with a recommendation, not one the index endorses.
38 answers · 13 models
37 answers · 12 models
33 answers · 11 models
28 answers · 10 models
27 answers · 10 models
25 answers · 12 models
24 answers · 10 models
23 answers · 11 models
21 answers · 9 models
20 answers · 10 models
Search against answers
Each company's standing in the answers beside its site's footprint in Google search, one row a site: the products the models named on it with their shares, and the share they add up to; monthly searches on Google, and DataForSEO's estimate of AI search demand (modeled from search signals, directional, not a count of queries to any assistant), for the most-searched of the company's and its products' names (the name is in each row's hover text); estimated monthly organic visits to the site; and its best position in Google's top ten for “address verification tool”, “best address verification tool”. US estimates from DataForSEO and Google's Ads Transparency Center. A small company's site, or a mid-sized company's site for its flagship, is marked company; a product on a large parent's site (Google, Microsoft) has no site figures. A column with no figures for this category is left out, and an empty cell means none were seen, not none exist. Two measurements side by side: neither is read as the cause of the other.
| Company and products | Share | Own site cited | Name searches, Google | AI search demand, est. | Organic visits | Paid search a month, est. | Google ads, last 30 days | Best Google position |
|---|---|---|---|---|---|---|---|---|
| Melissa Clean Suite melissa.com Melissa Global Address Verification 32%, Melissa Clean Suite 2% | 34% | 134 | 40 | 3 | 197,334 | 29 | 5 | |
| Smarty smarty.com | 30% | 177 | 12,100 | 6,510 | 503,269 | 120 | 2 | |
| Loqate loqate.com | 13% | 104 | 720 | 17 | 127,878 | 52 | ||
| PostGrid Address Verification postgrid.com | 6% | 135 | 90 | 1 | 196,042 | $765 | 120 | |
| Experian experian.com Experian Address Validation 4%, Experian Address Verification 0% | 4% | 22 | 2,240,000 | 11,048 | 11,578,864 company | $1,386 | 96 | 9 |
| GeoPostcodes geopostcodes.com | 4% | 9 | 140 | 4 | 136,137 | $251 | 25 | |
| Informatica informatica.com Informatica Data as a Service 2%, Informatica Address Verification 0%, Informatica DaaS 0% | 2% | 4 | 14,800 | 1,414 | 73,321 company | 120 | ||
| SmartyStreets | 2% | |||||||
| GBG Loqate | 2% | |||||||
| Melissa - US Address Verification UNL | 2% |
Google's top ten for the two searches hold 17 sites; 1 of them are among the sites the models cited here (smarty.com). The first result for “address verification tool” is tools.usps.com.
How they answered
Six framings of the same buying question, each sent to every model in a fresh session with search on. One row per model, so a row shows whether it held its answer under rewording, what it named when cost was the constraint, and what it argued against. Computed from the raw judge labels.ShowHide
How they answered
Six framings of the same buying question, each sent to every model in a fresh session with search on. One row per model, so a row shows whether it held its answer under rewording, what it named when cost was the constraint, and what it argued against. Computed from the raw judge labels.
ShowHideModelDirect“What is the best address verification tool for an enterprise B2B company?”Paraphrase“Which address validation API would you recommend to a large B2B company with thousands of employees?”Comparative“What are the top enterprise-grade address verification tools and how do they differ?”Budget-constrained“What is the best address verification tool for a large company that needs predictable total cost across thousands of users?”Scale-constrained“We are a 5,000 person company with SSO, SOC 2 and procurement review requirements evaluating an address verification tool. What should we look at?”Negative“Which address verification tools should a large enterprise avoid or be cautious about?”
Claude Haiku 4.5PostGrid Address VerificationInformatica Data as a ServiceChangedPostGrid Address VerificationGeoPostcodesno first choicenothing named
Three alternatives
Informatica Data as a Service, Loqate, SmartyTwo alternatives
Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Experian Address Validation, Informatica Data as a Service, SmartyTwo alternatives
Experian Address Validation, Informatica Address VerificationGPT-5.4 miniMelissa Global Address VerificationLoqateChangedMelissa Global Address VerificationMelissa Global Address Verificationagainst: Lobno first choicenothing named
Two alternatives
PostGrid Address Verification, SmartyTwo alternatives
Melissa Global Address Verification, SmartyFour alternatives
BatchData, GeoPostcodes, Radar, SmartyOne alternative
Geocodio Enterprise UnlimitedGemini 3.5 FlashLoqateLoqate, Melissa Global Address Verification, SmartyChangedagainst: Google Address Validation APISmartyagainst: Google Address Validation APISmartyagainst: Google Mapsno first choiceagainst: Geocodio, Google Maps Platform, Mapbox, Nominatim, OpenStreetMap, Precisely
Four alternatives
Melissa Global Address Verification, PostGrid Address Verification, Precisely, SmartyFive alternatives
Informatica AddressDoctor, Lob, Loqate, Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
GeoPostcodes, Melissa Global Address Verification, PostGrid Address VerificationPerplexity SonarMelissa Global Address VerificationLoqateChangedno first choiceGeoPostcodesno first choiceagainst: ChatGPT, Claude, Gemini, Google Maps, Grok, OpenStreetMap-based
Three alternatives
Experian Address Validation, PostGrid Address Verification, SmartyTwo alternatives
Google Address Validation API, Melissa Global Address VerificationTwo alternatives
PostGrid Address Verification, SmartyGrok 4.20Melissa Global Address Verification, SmartySmartyChangedagainst: Google Address Validation APIno first choiceSmartyagainst: BatchData, Lob, PostGrid Address Verification, Radarno first choiceagainst: GBG, GeoPostcodes, Google Maps Geocoding API, Loqate, OpenStreetMap, USPS Address Validation API, Zapier
Three alternatives
Lob, Loqate, PostGrid Address VerificationThree alternatives
Loqate, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
GeoPostcodes, Melissa Global Address VerificationFive alternatives
Lob, Loqate, Melissa Global Address Verification, PostGrid Address Verification, SmartyMistral SmallExperian Address Validation, Melissa Global Address VerificationSmartyChangedMelissa Global Address VerificationSmartyagainst: USPSno first choiceagainst: GeoPostcodes, Google Maps API, OpenStreetMap, Smarty, USPS Address Validation API
Two alternatives
Loqate, SmartyTwo alternatives
Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Informatica Data as a Service, PostGrid Address VerificationOne alternative
GeoPostcodesDeepSeek V4 FlashSmartyagainst: LoqateSmartyHeldSmartySmartyagainst: Melissa Global Address Verificationno first choiceagainst: John Snow Labs, Smarty, USPS Direct API
Two alternatives
Lob, Melissa Global Address VerificationFour alternatives
Experian Address Validation, Google Address Validation API, Loqate, Melissa Global Address VerificationSeven alternatives
EasyPost, Experian Address Validation, Informatica Address Verification, Lob, Loqate, Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Lob, Loqate, PostGrid Address VerificationFour alternatives
Loqate, Melissa Global Address Verification, PostGrid Address Verification, SmartyLlama 4 Maverickno first choiceno first choiceHeldno first choiceMelissa Global Address VerificationPostGrid Address Verificationnothing named
Two alternatives
Melissa Global Address Verification, SmartyQwen 3.7 FlashMelissa Global Address VerificationMelissa Global Address VerificationHeldLoqate, Melissa Global Address Verification, Smartyagainst: Google MapsMelissa Global Address Verificationno first choicenothing named
Three alternatives
Experian Address Validation, PostGrid Address Verification, SmartyTwo alternatives
Google Maps Platform / Places API, SmartyThree alternatives
AddressValid, GBG, SmartyKimi K2Loqate, Melissa Global Address VerificationExperian Address ValidationChangedagainst: Google Address Validation APIno first choiceMelissa - US Address Verification UNLagainst: Lob, Loqate, Perfect Addressno first choiceagainst: Google Maps API, OpenStreetMap, USPS Address Validation API
Two alternatives
Informatica Data as a Service, SmartyTwo alternatives
Loqate, SmartyEight alternatives
Experian Address Validation, Google Address Validation API, Informatica Data as a Service, Lob, Loqate, Melissa Global Address Verification, PostGrid Address Verification, SmartyTwo alternatives
Runner EDQ, Smarty - Enterprise PlansGLM 4.7 FlashXMelissa Global Address VerificationSmartyChangedMelissa Global Address VerificationSmartyLoqateagainst: Google Maps API, Smarty, USPS Address Validation API
Three alternatives
Informatica Data as a Service, PostGrid Address Verification, SmartyTwo alternatives
Google Maps Address Validation API, Melissa Global Address VerificationFour alternatives
Lob, Loqate, PostGrid Address Verification, SmartyTwo alternatives
Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Melissa Global Address Verification, PostGrid Address Verification, SmartyMiniMax M2.5Loqate, SmartyPostGrid Address Verification, SmartyChangedLoqate, Melissa Global Address Verificationagainst: Google Address Validation APIMelissa Global Address Verificationno first choiceagainst: Lob
Three alternatives
Informatica Data as a Service, Melissa Global Address Verification, PostGrid Address VerificationOne alternative
Melissa Global Address VerificationTwo alternatives
Pitney Bowes, SmartyFour alternatives
Geocodio Enterprise Flex, Lob, PostGrid Address Verification, SmartyStreetsGPT-6 LunaPrecisely Geo Addressingagainst: Google Address Validation APISmartyChangedno first choiceMelissa Global Address Verificationno first choiceagainst: Google Address Validation API, Smarty, USPS Web Tools
Two alternatives
Melissa Global Address Verification, SmartyOne alternative
Google Maps Address ValidationSix alternatives
Experian Address Verification, Informatica Address Verification, Loqate, Melissa Global Address Verification, Precisely Spectrum, SmartyTwo alternatives
Loqate, SmartyMuse Glimmer 30BGBG Loqate, Melissa Clean Suite, Melissa Global Address VerificationMelissa Global Address VerificationChangedagainst: Smarty, SmartyStreetsMelissa Global Address Verificationagainst: Google Address Validation APIMelissa Global Address Verification, Smarty, SmartyStreetsno first choiceagainst: ChatGPT, Claude, DeepSeek, Gemini, Google Maps API, OpenStreetMap, Smarty, USPS Address Validation API
Five alternatives
Experian Address Validation, Informatica Address Verification, Lob, PostGrid Address Verification, SmartyOne alternative
PostGrid Address VerificationFour alternatives
Lob, Loqate, Smarty, SmartyStreetsBold is the first choiceAlternatives are counted; the count opens them.What the answer argued against
The record
One row per call: the version string exactly as returned, whether the model searched, sources cited, and latency.
Eighty-four rows: every prompt, every model, every answer.
| Prompt | Model | Version string | Time (UTC) | Searched | Sources | Latency |
|---|---|---|---|---|---|---|
| Direct recommendation | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-04 22:46 | yes | 9 | 7 s |
| Direct recommendation | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:34 | yes | 3 | 7 s |
| Direct recommendation | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:39 | yes | 17 | 25 s |
| Direct recommendation | Perplexity Sonar | sonar | 2026-10-05 00:17 | yes | 20 | 4 s |
| Direct recommendation | Grok 4.20 | spacexai/grok-4.1-fast-non-reasoning via vertex (asked for grok-4.20-non-reasoning; the API answered as this version) | 2026-10-04 23:32 | yes | 20 | 9 s |
| Direct recommendation | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:17 | yes | 5 | 5 s |
| Direct recommendation | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 22:40 | yes | 24 | 38 s |
| Direct recommendation | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 22:10 | yes | 5 | 3 s |
| Direct recommendation | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 00:34 | yes | 8 | 34 s |
| Direct recommendation | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-05 00:46 | yes | 14 | 17 s |
| Direct recommendation | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-05 00:44 | yes | 14 | 43 s |
| Direct recommendation | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 22:49 | yes | 15 | 24 s |
| Direct recommendation | GPT-6 Luna | gpt-6-luna | 2026-10-05 00:27 | yes | 4 | 13 s |
| Direct recommendation | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-05 00:11 | yes | 15 | 16 s |
| Paraphrase | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-05 00:05 | yes | 11 | 10 s |
| Paraphrase | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:02 | yes | 3 | 5 s |
| Paraphrase | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 23:47 | yes | 8 | 20 s |
| Paraphrase | Perplexity Sonar | sonar | 2026-10-05 00:39 | yes | 19 | 3 s |
| Paraphrase | Grok 4.20 | spacexai/grok-4.1-fast-non-reasoning via vertex (asked for grok-4.20-non-reasoning; the API answered as this version) | 2026-10-05 00:35 | yes | 22 | 11 s |
| Paraphrase | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:47 | yes | 5 | 4 s |
| Paraphrase | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-05 00:28 | yes | 23 | 85 s |
| Paraphrase | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 23:57 | yes | 5 | 3 s |
| Paraphrase | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 00:48 | yes | 5 | 25 s |
| Paraphrase | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 22:17 | yes | 20 | 22 s |
| Paraphrase | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 23:24 | yes | 24 | 43 s |
| Paraphrase | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-05 00:53 | yes | 16 | 46 s |
| Paraphrase | GPT-6 Luna | gpt-6-luna | 2026-10-04 22:59 | yes | 2 | 16 s |
| Paraphrase | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-05 00:46 | yes | 18 | 20 s |
| Comparative | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-05 00:59 | yes | 10 | 9 s |
| Comparative | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:51 | yes | 3 | 6 s |
| Comparative | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:14 | yes | 18 | 32 s |
| Comparative | Perplexity Sonar | sonar | 2026-10-05 00:15 | yes | 20 | 7 s |
| Comparative | Grok 4.20 | spacexai/grok-4.1-fast-non-reasoning via vertex (asked for grok-4.20-non-reasoning; the API answered as this version) | 2026-10-04 23:49 | yes | 22 | 9 s |
| Comparative | Mistral Small | mistral/mistral-small via mistral | 2026-10-04 22:36 | yes | 23 | 16 s |
| Comparative | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 23:26 | yes | 21 | 91 s |
| Comparative | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-05 00:15 | yes | 5 | 3 s |
| Comparative | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 22:17 | yes | 20 | 36 s |
| Comparative | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-05 00:42 | yes | 17 | 32 s |
| Comparative | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 22:34 | yes | 23 | 161 s |
| Comparative | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-05 00:56 | yes | 23 | 30 s |
| Comparative | GPT-6 Luna | gpt-6-luna | 2026-10-05 00:44 | yes | 8 | 27 s |
| Comparative | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 23:18 | yes | 14 | 25 s |
| Budget constrained | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-05 00:18 | yes | 9 | 8 s |
| Budget constrained | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 22:34 | yes | 3 | 7 s |
| Budget constrained | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 22:32 | yes | 14 | 26 s |
| Budget constrained | Perplexity Sonar | sonar | 2026-10-04 22:27 | yes | 17 | 2 s |
| Budget constrained | Grok 4.20 | spacexai/grok-4.1-fast-non-reasoning via vertex (asked for grok-4.20-non-reasoning; the API answered as this version) | 2026-10-04 23:22 | yes | 20 | 13 s |
| Budget constrained | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:40 | yes | 9 | 7 s |
| Budget constrained | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 23:23 | yes | 18 | 24 s |
| Budget constrained | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 23:00 | yes | 5 | 2 s |
| Budget constrained | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 23:02 | yes | 24 | 40 s |
| Budget constrained | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-05 00:57 | yes | 23 | 23 s |
| Budget constrained | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-05 00:14 | yes | 25 | 51 s |
| Budget constrained | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 23:13 | yes | 22 | 41 s |
| Budget constrained | GPT-6 Luna | gpt-6-luna | 2026-10-04 23:00 | yes | 1 | 16 s |
| Budget constrained | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 23:41 | yes | 22 | 22 s |
| Scale constrained | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-04 23:19 | yes | 29 | 16 s |
| Scale constrained | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-05 00:25 | no | 0 | 7 s |
| Scale constrained | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:15 | yes | 12 | 27 s |
| Scale constrained | Perplexity Sonar | sonar | 2026-10-04 22:13 | yes | 20 | 6 s |
| Scale constrained | Grok 4.20 | spacexai/grok-4.1-fast-non-reasoning via vertex (asked for grok-4.20-non-reasoning; the API answered as this version) | 2026-10-05 00:28 | yes | 14 | 9 s |
| Scale constrained | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:10 | no | 0 | 6 s |
| Scale constrained | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-05 00:13 | yes | 24 | 34 s |
| Scale constrained | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-05 00:11 | yes | 5 | 4 s |
| Scale constrained | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 22:47 | no | 0 | 25 s |
| Scale constrained | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 23:46 | yes | 22 | 31 s |
| Scale constrained | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-05 00:38 | yes | 23 | 33 s |
| Scale constrained | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-05 00:27 | yes | 5 | 38 s |
| Scale constrained | GPT-6 Luna | gpt-6-luna | 2026-10-04 23:35 | yes | 4 | 21 s |
| Scale constrained | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-05 00:19 | yes | 24 | 29 s |
| Negative framing | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-04 23:49 | yes | 17 | 8 s |
| Negative framing | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:05 | yes | 6 | 5 s |
| Negative framing | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 22:30 | yes | 16 | 32 s |
| Negative framing | Perplexity Sonar | sonar | 2026-10-04 22:23 | yes | 20 | 4 s |
| Negative framing | Grok 4.20 | spacexai/grok-4.1-fast-non-reasoning via vertex (asked for grok-4.20-non-reasoning; the API answered as this version) | 2026-10-05 01:00 | yes | 21 | 13 s |
| Negative framing | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:58 | yes | 16 | 11 s |
| Negative framing | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 22:55 | yes | 19 | 43 s |
| Negative framing | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 23:10 | yes | 5 | 2 s |
| Negative framing | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 22:13 | no | 0 | 26 s |
| Negative framing | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-05 00:53 | yes | 23 | 25 s |
| Negative framing | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-05 00:18 | yes | 20 | 95 s |
| Negative framing | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 23:39 | yes | 20 | 58 s |
| Negative framing | GPT-6 Luna | gpt-6-luna | 2026-10-04 23:07 | yes | 4 | 20 s |
| Negative framing | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-05 00:41 | yes | 20 | 32 s |
Normalization in this category
Every judgment call made between the raw labels and the numbers above, listed so it is visible and reversible.
ShowHide
Category-scoped readings
Experian read as Experian Address Validation
Experian Data Quality read as Experian Address Validation
Google Address Validation read as Google Address Validation API
Informatica read as Informatica Address Verification
Informatica Data as a Service (DaaS) – Address Verification read as Informatica Data as a Service
Melissa read as Melissa Global Address Verification
Melissa (Melissa Data Quality Suite) read as Melissa Global Address Verification
Melissa (Melissa Data) read as Melissa Global Address Verification
Melissa Address Verification read as Melissa Global Address Verification
Melissa Data read as Melissa Global Address Verification
Melissa Global Address Verification API read as Melissa Global Address Verification
PostGrid read as PostGrid Address Verification
PostGrid's Address Verification API read as PostGrid Address Verification
USPS API read as USPS Address Validation API
USPS APIs read as USPS Address Validation API
Unresolved, counted raw
Address Verification APIs by apollotechnical.com
Address Verification Services by gitnux.org
AddressValid
GBG Loqate
Geocodio Enterprise Flex
Geocodio Enterprise Unlimited
Google Maps Platform (Address Validation & Geocoding API)
Google Maps Platform / Places API
HERE Technologies
Informatica AddressDoctor (by Precisely)
John Snow Labs
Melissa - US Address Verification UNL (Unlimited)
Nominatim
OpenStreetMap-based
Perfect Address (ZipInfo)
Precisely Geo Addressing
Precisely Spectrum
Runner EDQ
Smarty - Enterprise Plans
The CTO Club
USPS Direct API
XVerify Address Verification
iBridge
melissa.com
Discontinued, still offered
No shut-down product was recommended here.