Address verification tools
Asked as “address verification tool”, and as “address validation API”, on behalf of a mid-market 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
47%
Clear leader
47Smarty13Melissa Global Address Verification08PostGrid Address Verification32others
47% of first choices, clear leader.
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 a mid-market B2B company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrantSince September 2026
02
Melissa Global Address Verification13%5%55accepted challengernewNew since September 2026: not ranked then, 13% now.
Melissa Global Address Verification13%5%55accepted challengernewNew since September 2026: not ranked then, 13% now.03
PostGrid Address Verification8%3%39accepted challengernewNew since September 2026: not ranked then, 8% now.
PostGrid Address Verification8%3%39accepted challengernewNew since September 2026: not ranked then, 8% now.05Google Address Validation API Lab in the set4%11%19accepted challengernewNew since September 2026: not ranked then, 4% now.
06Experian Address Validation2%8%13accepted challengernewNew since September 2026: not ranked then, 2% now.
Show the one product at 0%, ordered by negative rate
The floor is 11 points of share, measured: how far the models move a leader on their own when the same questions are asked twice with nothing changed. A larger change is movement; a smaller one can't be told apart from repeat variation, and both are shown. Each index measures its own floor from its own repeat, over its own categories, so the floor differs from one index to the next. Movement is read over the twelve models both editions asked; GPT-6 Luna, Muse Glimmer 30B joined this edition and are in the standing but not yet in the comparison. How the floor is measured
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 two times of 52. Lab treatment is defined on the method page; the row is marked, not excluded.
Head to head
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 →
010203
04G05
E06
07Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative60%
Key
01Smarty47%
Smarty47%02Melissa Global Address Verification13%
Melissa Global Address Verification13%03PostGrid Address Verification8%
PostGrid Address Verification8%04Loqate4%
Loqate4%05Google Address Validation API4%
06Experian Address Validation2%
07Lob0%
Lob0%What they warned about
Eight of fourteen models held their first choice under the paraphrase. GPT-5.4 mini, Gemini 3.5 Flash, Mistral Small, Llama 4 Maverick, MiniMax M2.5 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 Maps Address Validation API
60%
3 of 5 labels negative · 3 of 14 models · 2 hard negative
“here are address verification tools you should avoid or be cautious about: ## Google Maps Address Validation API” Claude Haiku 4.5, negative prompt
USPS Web Tools100%
3 of 3 labels negative · 3 of 14 models · 1 hard negative
“The USPS officially retired the legacy Web Tools platform on January 25, 2026... completely non-functional.” Gemini 3.5 Flash, negative prompt
Melissa Global Address Verification5%
3 of 55 labels negative · 3 of 14 models
“Melissa's address verification is slow, with their bulk validation only capable of processing tens to hundreds of addresses per second.” Claude Haiku 4.5, negative prompt
getaddress.io
100%
2 of 2 labels negative · 2 of 14 models · 2 hard negative
“Avoid: getAddress.io (high-risk / legally compromised)” DeepSeek V4 Flash, 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
75 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. 1017 links across 182 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 · Smarty50 answers · 122 citations · 13 models
vendor site · Melissa43 answers · 61 citations · 13 models
vendor site · Guideflow42 answers · 42 citations · 11 models
vendor site · PostGrid37 answers · 58 citations · 12 models
36 answers · 55 citations · 11 models
vendor site · OpenCart28 answers · 28 citations · 12 models
vendor site · Radar24 answers · 25 citations · 11 models
24 answers · 24 citations · 11 models
vendor site · Shufti Pro21 answers · 23 citations · 9 models
17 answers · 25 citations · 8 models
16 answers · 16 citations · 11 models
vendor site · GeoPostcodes15 answers · 16 citations · 10 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.
42 answers · 11 models
27 answers · 12 models
24 answers · 11 models
24 answers · 11 models
23 answers · 10 models
19 answers · 9 models
18 answers · 11 models
16 answers · 8 models
16 answers · 11 models
15 answers · 6 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 |
|---|---|---|---|---|---|---|---|---|
| Smarty smarty.com | 47% | 177 | 12,100 | 6,510 | 503,269 | 120 | 2 | |
| Melissa Global Address Verification melissa.com | 13% | 134 | 40 | 3 | 197,334 | 29 | 5 | |
| PostGrid Address Verification postgrid.com | 8% | 135 | 90 | 1 | 196,042 | $765 | 120 | |
| Loqate loqate.com | 4% | 104 | 720 | 17 | 127,878 | 52 | ||
| Google parent site Google Address Validation API 4% | 4% | 49 | 720 | 24 | ||||
| Experian experian.com Experian Address Validation 2% | 2% | 22 | 2,240,000 | 11,048 | 11,578,864 company | $1,386 | 96 | 9 |
| Lob Address Verification | 2% | |||||||
| AddressZen addresszen.com | 2% | |||||||
| Google Maps Platform | 2% | |||||||
| Geocodio | 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 a mid-market B2B company?”Paraphrase“Which address validation API would you recommend to a mid-sized B2B company?”Comparative“What are the top address verification tools and how do they differ?”Budget-constrained“What is the best address verification tool for a company with a limited budget?”Scale-constrained“We are a 500 person company evaluating an address verification tool. What should we look at?”Negative“Which address verification tools should I avoid or be cautious about?”
Claude Haiku 4.5PostGrid Address VerificationPostGrid Address VerificationHeldSmartyPostGrid Address Verificationno first choiceagainst: Google Maps Address Validation API, Melissa Global Address Verification
Three alternatives
Informatica Data as a Service, Melissa Global Address Verification, SmartyTwo alternatives
Loqate, SmartyFive alternatives
Experian Address Validation, Incognia, Loqate, Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Loqate, Melissa Global Address Verification, SmartyGPT-5.4 miniMelissa Global Address VerificationSmartyChangedSmartyagainst: USPS-based tools / USPS validationSmartyagainst: USPS Web Toolsno first choicenothing named
Three alternatives
Experian Address Verification, PostGrid Address Verification, SmartyTwo alternatives
Google Address Validation API, Melissa Global Address VerificationTwo alternatives
Loqate, Melissa Global Address VerificationOne alternative
Melissa Global Address VerificationGemini 3.5 FlashLoqateSmartyChangedagainst: Google Maps Address Validation APISmartyagainst: USPS Web Tools APIGeocodio, USPS Address APIno first choiceagainst: FedEx, Google Places Autocomplete API, UPS, USPS Web Tools
Four alternatives
Lob, Melissa Global Address Verification, PostGrid Address Verification, SmartyThree alternatives
Loqate, Melissa Global Address Verification, PostGrid Address VerificationFive alternatives
BatchData, GeoPostcodes, Google Address Validation API, Lob, Melissa Global Address VerificationThree alternatives
EasyPost, Geoapify, Google Maps Address Validation APIPerplexity SonarSmartySmartyHeldSmartyagainst: Placekey, PostalyticsMelissa Global Address Verification, Smartyno first choiceagainst: AVS for card payments, Google Address Verification, Google Maps Address Validation
Three alternatives
Loqate, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Google Address Validation API, PostGrid Address VerificationThree alternatives
Loqate Verify, Melissa Global Address Verification, PostGrid Address VerificationOne alternative
Experian Address ValidationGrok 4.20Smartyagainst: EasyPostSmartyHeldagainst: Google MapsSmartyUSPS Address Validation APIno first choiceagainst: DataFlow, Google Autocomplete, Melissa Global Address Verification, Quadient, Shufti Pro, Sumsub, Veriff, getaddress.io
Two alternatives
Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Lob, Melissa Global Address Verification, PostGrid Address VerificationFive alternatives
Byteplant Address Validator, Lob Address Verification, Loqate, Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Lob, PostGrid Address Verification, SmartyMistral SmallExperian Address Validation, Melissa Global Address VerificationGoogle Maps Address Validation APIChangedSmartyAddressZenno first choiceagainst: Google Address Verification
Two alternatives
Loqate, PostGrid Address VerificationThree alternatives
Melissa Address Validation API, PostGrid Address Validation API, USPS Address Validation APIFive alternatives
Experian Address Validation, Google Address Validation API, Lob, PostGrid Address Verification, RadarThree alternatives
Google Maps API Address Validation, Smarty, WhitepagesDeepSeek V4 FlashSmartySmartyHeldSmartyagainst: Google Address Validation APISmartyagainst: Google Maps Address Validation APIno first choiceagainst: AU10TIX, Experian Address Verification, Lob, Veriff, getaddress.io
Three alternatives
Loqate, Melissa Global Address Verification, PostGrid Address VerificationFour alternatives
Google Address Validation API, Lob, Loqate, Melissa Global Address VerificationSix alternatives
EasyPost Address Verification, Ideal Postcodes, Lob, Loqate, Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Melissa Global Address Verification, PostGrid Address Verification, USPS Address Validation APILlama 4 Maverickno first choiceMelissa Global Address VerificationChangedno first choiceSmartyno first choicenothing named
Two alternatives
Informatica Data as a Service, PostGrid Address VerificationQwen 3.7 FlashSmartySmartyHeldSmartyagainst: Melissa Global Address VerificationGoogle Maps Platform, Peppy Data Servicesagainst: OpenStreetMap, USPS Web ToolsLoqate, Melissa Global Address Verification, Smartyagainst: Google Places APInothing named
Two alternatives
Loqate, Melissa Global Address VerificationTwo alternatives
Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Google Maps Platform, Lob.comOne alternative
Raven SoftwareTwo alternatives
AfterShip, ShippoKimi K2SmartySmartyHeldSmartyGoogle Address Validation APIagainst: Experian Address Validationno first choiceagainst: USPS Free Tool
Two alternatives
Loqate, Melissa Global Address VerificationThree alternatives
Google Address Validation API, Loqate, Melissa Global Address VerificationSix alternatives
Experian Address Validation, Google Address Validation API, Lob, Loqate, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Radar, SmartyGLM 4.7 FlashXSmartySmartyHeldagainst: Google Maps PlatformMelissa Global Address VerificationGoogle Maps Address Validation, USPS Addresses 3.0 APagainst: Smarty Address Verificationno first choiceagainst: Google Maps API, OpenStreetMap, PostGrid Address Verification, USPS Address API
Three alternatives
Experian Address Validation, Melissa Global Address Verification, PostGrid Address VerificationOne alternative
FetchifyFive alternatives
FullContact, Loqate, PostGrid Address Verification, Postcoder, SmartyThree alternatives
AddressZen, Lob Address Verification, PostGrid Address VerificationMiniMax M2.5SmartyGoogle Address Validation API, Melissa Global Address VerificationChangedLob, SmartyStreetsMelissa Global Address Verification, USPS Address Verification APIagainst: FreeGeoIP.liveno first choicenothing named
Two alternatives
Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
PostGrid Address Verification, ShipStationThree alternatives
Google Address Validation API, Melissa Global Address Verification, PostGrid Address VerificationOne alternative
SmartyGPT-6 LunaSmartySmartyHeldGoogle Address Validation API, Smartyagainst: USPS Address Validation APISmartyno first choiceagainst: BeenVerified, Google Address Validation API, Spokeo, TruthFinder, USPS Address Validation API
Three alternatives
Lob, Loqate, Melissa Global Address VerificationThree alternatives
Google Address Validation API, Lob, LoqateThree alternatives
Lob, Loqate, Melissa Global Address VerificationTwo alternatives
Google Address Validation API, LoqateMuse Glimmer 30BLoqate by gbg, SmartySmartyChangedSmartyLob Address Verification, PostGrid Address Verificationno first choiceagainst: BeenVerified, Intelius, Onfido, Persona, Plaid, Spokeo, Sumsub, Tensocom, Whitepages
One alternative
Melissa Global Address VerificationThree alternatives
Google Address Validation API, Lob, LoqateThree alternatives
Loqate, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Radar, SmartyBold 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 | 2026-10-05 00:10 | yes | 16 | 7 s |
| Direct recommendation | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-05 00:17 | yes | 4 | 6 s |
| Direct recommendation | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:44 | yes | 14 | 28 s |
| Direct recommendation | Perplexity Sonar | sonar | 2026-10-05 00:10 | yes | 18 | 5 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 22:22 | yes | 23 | 12 s |
| Direct recommendation | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 01:00 | yes | 14 | 7 s |
| Direct recommendation | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 23:44 | yes | 23 | 42 s |
| Direct recommendation | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-05 00:45 | yes | 5 | 2 s |
| Direct recommendation | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 00:19 | no | 0 | 24 s |
| Direct recommendation | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 23:43 | yes | 14 | 19 s |
| Direct recommendation | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 23:22 | yes | 13 | 56 s |
| Direct recommendation | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 23:37 | yes | 21 | 33 s |
| Direct recommendation | GPT-6 Luna | gpt-6-luna | 2026-10-04 22:24 | yes | 4 | 13 s |
| Direct recommendation | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-05 00:54 | yes | 14 | 16 s |
| Paraphrase | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-05 00:42 | yes | 16 | 9 s |
| Paraphrase | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-05 00:37 | yes | 3 | 4 s |
| Paraphrase | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:53 | yes | 7 | 22 s |
| Paraphrase | Perplexity Sonar | sonar | 2026-10-05 00:42 | yes | 19 | 2 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) | 2026-10-04 22:23 | yes | 23 | 9 s |
| Paraphrase | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:56 | yes | 5 | 6 s |
| Paraphrase | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-05 00:19 | yes | 24 | 45 s |
| Paraphrase | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 22:10 | yes | 5 | 2 s |
| Paraphrase | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 23:43 | yes | 5 | 27 s |
| Paraphrase | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 23:06 | yes | 10 | 12 s |
| Paraphrase | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 22:58 | yes | 23 | 31 s |
| Paraphrase | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-05 00:47 | yes | 5 | 16 s |
| Paraphrase | GPT-6 Luna | gpt-6-luna | 2026-10-05 00:30 | yes | 5 | 17 s |
| Paraphrase | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 22:10 | yes | 15 | 19 s |
| Comparative | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-05 00:21 | yes | 10 | 9 s |
| Comparative | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:37 | yes | 4 | 7 s |
| Comparative | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 23:47 | yes | 14 | 25 s |
| Comparative | Perplexity Sonar | sonar | 2026-10-04 22:22 | yes | 16 | 6 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 23:23 | yes | 22 | 9 s |
| Comparative | Mistral Small | mistral/mistral-small via mistral | 2026-10-04 23:17 | yes | 9 | 8 s |
| Comparative | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 22:33 | yes | 21 | 52 s |
| Comparative | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-05 00:42 | yes | 5 | 2 s |
| Comparative | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 00:10 | no | 0 | 35 s |
| Comparative | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-05 00:09 | yes | 19 | 31 s |
| Comparative | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 23:42 | yes | 23 | 92 s |
| Comparative | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 23:45 | yes | 10 | 35 s |
| Comparative | GPT-6 Luna | gpt-6-luna | 2026-10-04 22:25 | yes | 6 | 19 s |
| Comparative | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 22:20 | yes | 13 | 21 s |
| Budget constrained | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-05 00:15 | yes | 9 | 6 s |
| Budget constrained | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-05 00:08 | yes | 3 | 6 s |
| Budget constrained | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:27 | yes | 12 | 22 s |
| Budget constrained | Perplexity Sonar | sonar | 2026-10-05 00:16 | yes | 15 | 3 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) | 2026-10-05 00:14 | yes | 23 | 9 s |
| Budget constrained | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:32 | yes | 5 | 5 s |
| Budget constrained | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 22:57 | yes | 23 | 29 s |
| Budget constrained | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 22:19 | yes | 5 | 2 s |
| Budget constrained | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 00:21 | no | 0 | 28 s |
| Budget constrained | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 23:27 | yes | 14 | 32 s |
| Budget constrained | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 23:47 | yes | 13 | 88 s |
| Budget constrained | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 23:45 | yes | 13 | 34 s |
| Budget constrained | GPT-6 Luna | gpt-6-luna | 2026-10-04 23:57 | yes | 3 | 9 s |
| Budget constrained | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 23:06 | yes | 13 | 15 s |
| Scale constrained | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-05 00:01 | no | 0 | 12 s |
| Scale constrained | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:50 | no | 0 | 6 s |
| Scale constrained | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 22:35 | yes | 10 | 25 s |
| Scale constrained | Perplexity Sonar | sonar | 2026-10-04 23:52 | yes | 19 | 5 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 00:19 | yes | 12 | 9 s |
| Scale constrained | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:32 | no | 0 | 8 s |
| Scale constrained | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 23:09 | yes | 22 | 43 s |
| Scale constrained | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 22:44 | yes | 5 | 4 s |
| Scale constrained | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 23:32 | no | 0 | 27 s |
| Scale constrained | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 23:13 | yes | 19 | 56 s |
| Scale constrained | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 23:07 | yes | 22 | 48 s |
| Scale constrained | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 22:12 | yes | 5 | 13 s |
| Scale constrained | GPT-6 Luna | gpt-6-luna | 2026-10-04 23:18 | yes | 2 | 14 s |
| Scale constrained | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-05 00:29 | yes | 13 | 16 s |
| Negative framing | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-04 22:58 | yes | 35 | 14 s |
| Negative framing | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 22:32 | no | 0 | 5 s |
| Negative framing | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 23:03 | yes | 17 | 26 s |
| Negative framing | Perplexity Sonar | sonar | 2026-10-04 22:51 | 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 00:34 | yes | 23 | 12 s |
| Negative framing | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:26 | yes | 5 | 6 s |
| Negative framing | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 23:40 | yes | 19 | 46 s |
| Negative framing | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 22:39 | yes | 5 | 2 s |
| Negative framing | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 00:23 | no | 0 | 28 s |
| Negative framing | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 23:36 | yes | 24 | 22 s |
| Negative framing | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-05 00:12 | yes | 20 | 59 s |
| Negative framing | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-05 00:05 | yes | 19 | 30 s |
| Negative framing | GPT-6 Luna | gpt-6-luna | 2026-10-04 23:27 | yes | 5 | 16 s |
| Negative framing | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-05 00:41 | yes | 25 | 26 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 read as Google Maps
Google Address Validation read as Google Address Validation API
Google's Address Validation API read as Google Address Validation API
Google’s Address Validation API read as Google Address Validation API
Melissa read as Melissa Global Address Verification
Melissa (DataBox) read as Melissa Global Address Verification
Melissa (Melissa Data) read as Melissa Global Address Verification
Melissa (formerly Dataverse) read as Melissa Global Address Verification
Melissa (formerly 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
Melissa's Global Address Verification API read as Melissa Global Address Verification
PostGrid read as PostGrid Address Verification
Postgrid read as PostGrid Address Verification
USPS Address APIs (Official) read as USPS Address Validation API
USPS Addresses API read as USPS Address Validation API
Unresolved, counted raw
AVS for card payments
AddressDoctor
Autoaddress
DataFlow
DataMatch
EasyPost Address Verification
FreeGeoIP.live
Google Autocomplete
Google Maps Platform
Google Maps Platform (Places API)
Google Places Autocomplete API
Incognia
Intelius
Lob.com
Loqate Address Verification
Loqate Verify
Loqate by gbg
Melissa Address Validation API
PAV – Postal Address Verification
Peppy Data Services
Placekey
PostGrid Address Validation API
Postio
Raven Software
Smarty Address Verification
SnapAddress
StrikeIron
Tensocom
TruthFinder
Twilio Verify
USPS Addresses 3.0 AP
USPS Free Tool
USPS-based tools / USPS validation
Vepler
Discontinued, still offered
No shut-down product was recommended here.