Index › GTM › GTM data and infrastructure › Address verification › Small business · October 2026 Edition
Address verification tools for small business buyers
Asked as “address verification tool”, and as “address validation API”, on behalf of a small B2B company. 52 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
67%
SmartyClear leader
67Smarty12PostGrid Address Verification06Melissa Global Address Verification15others
67% 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 small B2B company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
Show the three 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 one time of 4; the other thirteen models one time 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 small business.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
One product takes 67% of first choices here, so the chart would put six markers in one corner and one at the far edge. The two measurements it plots are columns in the standing above: share, and the negative label rate. Two products carry a negative rate above 25% in this category.
What they warned about
Eight of fourteen models held their first choice under the paraphrase. Claude Haiku 4.5, Gemini 3.5 Flash, Mistral Small, Qwen 3.7 Flash, GLM 4.7 FlashX 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
26%
6 of 23 labels negative · 5 of 14 models
“Google Address Validation if you need strong parsing, standardization, or true address verification, because Melissa says Google does not parse, standardize, validate” Perplexity Sonar, negative prompt
Melissa Global Address Verification11%
5 of 45 labels negative · 4 of 14 models
“Best for comprehensive global coverage and certification depth ... but can be more enterprise-oriented in pricing.” DeepSeek V4 Flash, scale prompt
Experian Address Validation
27%
3 of 11 labels negative · 3 of 14 models
“Enterprise-only suites such as Informatica and Experian when your need is straightforward checkout or shipping validation” Perplexity Sonar, negative prompt
Loqate14%
4 of 29 labels negative · 3 of 14 models
“more expensive and slower to see ROI than Smarty—not ideal for a small business just starting out” DeepSeek V4 Flash, paraphrase 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
76 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. 1016 links across 153 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 · Smarty56 answers · 129 citations · 14 models
45 answers · 82 citations · 12 models
vendor site · Guideflow45 answers · 45 citations · 12 models
vendor site · Melissa42 answers · 60 citations · 13 models
vendor site · PostGrid30 answers · 49 citations · 11 models
vendor site · OpenCart29 answers · 29 citations · 11 models
vendor site · GetApp21 answers · 22 citations · 10 models
19 answers · 19 citations · 9 models
vendor site · Google Search18 answers · 30 citations · 9 models
18 answers · 18 citations · 11 models
18 answers · 18 citations · 9 models
vendor site · SourceForge17 answers · 22 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.
45 answers · 12 models
28 answers · 11 models
25 answers · 12 models
24 answers · 9 models
22 answers · 11 models
19 answers · 9 models
18 answers · 11 models
18 answers · 9 models
17 answers · 10 models
15 answers · 8 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 | 67% | 177 | 12,100 | 6,510 | 503,269 | 120 | 2 | |
| PostGrid Address Verification postgrid.com | 12% | 135 | 90 | 1 | 196,042 | $765 | 120 | |
| Melissa Global Address Verification melissa.com | 6% | 134 | 40 | 3 | 197,334 | 29 | 5 | |
| Google parent site Google Address Validation API 4% | 4% | 49 | 720 | 24 | ||||
| Radar radar.com | 2% | 115 | 673,000 | 59,526 | 11,371 | 29 | ||
| EasyPost easypost.com | 2% | 5 | ||||||
| USPS Address Validation API usps.com | 2% | 11 | 1 | |||||
| Google Maps API Address Validation | 2% | |||||||
| PostGrid Essential | 2% | |||||||
| SmartyStreets US Street Address API | 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 small B2B company?”Paraphrase“Which address validation API would you recommend to a small business that sells to other businesses?”Comparative“What are the top address verification tools for a small team and how do they differ?”Budget-constrained“What is the best address verification tool for a small company with a tight budget?”Scale-constrained“We are a 30 person company evaluating an address verification tool. What should we look at?”Negative“Which address verification tools should a small business avoid or be cautious about?”
Claude Haiku 4.5SmartyPostGrid Address VerificationChangedSmartyagainst: TwilioPostGrid Address Verification, Smartyagainst: Google Mapsno first choiceagainst: Google Maps, USPS Address Lookup Tool
Two alternatives
Experian Address Verification, PostGrid Address VerificationTwo alternatives
CUFinder, SmartyThree alternatives
Melissa Global Address Verification, PostGrid Address Verification, WinPureTwo alternatives
GoAddress, RadarGPT-5.4 miniSmartySmartyHeldSmartySmartyno first choicenothing named
Two alternatives
Melissa Global Address Verification, USPS Address Validation APIOne alternative
Melissa Global Address VerificationTwo alternatives
Loqate, Melissa Global Address VerificationTwo alternatives
Google Address Validation API, USPS toolsGemini 3.5 FlashPostGrid Address Verification, Smartyagainst: Google Address Validation APISmartyChangedagainst: Google Maps Address ValidationSmartyEasyPost, Google Address Validation APIagainst: USPS Web Tools APISmartyagainst: Google Address Validation API, Melissa Global Address Verificationagainst: Google Maps, Google Places API, LexisNexis, Persona, UPS Address Validation API
One alternative
LobTwo alternatives
EasyPost, PostGrid Address VerificationFour alternatives
Google Address Validation API, Lob, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Lob, SmartyTwo alternatives
Lob, LoqatePerplexity SonarSmartySmartyHeldSmartySmartyno first choiceagainst: Experian Address Validation, Google Address Validation API, Informatica Address Verification, Payment AVS
One alternative
Melissa Global Address VerificationTwo alternatives
Google Address Validation API, LobFour alternatives
Experian Address Validation, Loqate, Melissa Global Address Verification, PostGrid Address VerificationOne alternative
RadarGrok 4.20SmartySmartyHeldSmartySmartyagainst: Google Address Validation APISmartyagainst: Google Places API or Address Validation, Veriff, Yext
Two alternatives
Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Google Address Validation API, Lob, USPS Web Tools APIThree alternatives
Lob, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Melissa Global Address Verification, USPS Address Validation APIThree alternatives
Google Address Validation API, Melissa Global Address Verification, PostGrid Address VerificationMistral SmallSmartyMelissa Global Address Verification, PostGrid Address VerificationChangedPostGrid Address Verification, SmartyGoogle Maps API Address Validation, Radarno first choicenothing named
One alternative
SmartyThree alternatives
GlobalZ, Loqate, Melissa Global Address VerificationOne alternative
SmartyDeepSeek V4 FlashSmartySmartyHeldagainst: Google Address Validation API, Loqate, free USPS APISmartySmartyagainst: USPS Web Tools APISmartyagainst: Melissa Global Address Verificationagainst: Google Maps Geocoding API, Loqate, Melissa Global Address Verification
Two alternatives
Lob, PostGrid Address VerificationOne alternative
PostGrid Address VerificationFour alternatives
Lob, Loqate, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
AddressZen, Lob Address VerificationTwo alternatives
Lob, PostGrid Address VerificationLlama 4 Maverickno first choiceno first choiceHeldno first choiceSmartyno first choiceagainst: Google Address Verification
Two alternatives
Address Verification Software, FetchifyQwen 3.7 FlashMelissa Global Address Verification, Smartyagainst: Experian Address ValidationSmartyChangedSmartyagainst: LoqateSmartyno first choiceagainst: Amazon Location Service, Google Places API, Mapbox
One alternative
LoqateTwo alternatives
Google Cloud, LobOne alternative
PostGrid Address VerificationThree alternatives
Google Address Validation API, Melissa Global Address Verification, PostGrid Address VerificationKimi K2Smartyagainst: Experian Address ValidationSmartyHeldGoogle Address Validation API, SmartyPostGrid Address Verification, USPS Address Validation APIagainst: Melissa Global Address Verificationno first choiceagainst: Loqate, USPSagainst: Google Address Validation API, USPS Address Validation API
Two alternatives
Loqate, Melissa Global Address VerificationTwo alternatives
Google Address Validation API, Lob Address VerificationFour alternatives
Lob, Loqate, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Google Address Validation API, RadarGLM 4.7 FlashXPostGrid Address Verification, Smartyagainst: Melissa Global Address VerificationSmartyChangedSmartyno first choiceno first choiceagainst: Google’s free address validation API
Two alternatives
Data8, Google Maps Address Validation APIOne alternative
USPS Web Tools APIFour alternatives
Google Address Validation API, Lob, Loqate, Melissa Global Address VerificationMiniMax M2.5SmartySmartyHeldSmartyGoogle Address Validation API, Smartyno first choicenothing named
Two alternatives
Loqate, Melissa Global Address VerificationThree alternatives
Google Address Validation API, PostGrid Address Verification, USPS Address Information APIFour alternatives
AddressZen, Loqate, Melissa Global Address Verification, PostGrid Address VerificationOne alternative
PostGrid Address VerificationGPT-6 LunaSmartySmartyHeldLob Address Verification, SmartyMelissa Global Address Verificationagainst: USPS's APIno first choiceagainst: Google Geocoding API, The direct USPS API, USPS Web Tools
Two alternatives
Loqate, Melissa Global Address VerificationOne alternative
Google Address Validation APIThree alternatives
Google Address Validation API, Loqate, Melissa Global Address VerificationOne alternative
SmartyTwo alternatives
Google Maps, USPSMuse Glimmer 30BSmartySmartyStreets US Street Address APIChangedPostGrid Address Verification, SmartyPostGrid Essential, Smartyno first choiceagainst: Microblink, Persona, getaddress.io
Three alternatives
Melissa Global Address Verification, PostGrid Address Verification, PostcoderThree alternatives
Google Address Validation API, PostGrid Address Verification, ShippoThree alternatives
GlobalZ, Melissa Global Address Verification, PostcoderTwo alternatives
Google Maps, Lob Address VerificationBold 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 22:31 | yes | 9 | 6 s |
| Direct recommendation | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:27 | yes | 3 | 5 s |
| Direct recommendation | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 23:47 | yes | 12 | 20 s |
| Direct recommendation | Perplexity Sonar | sonar | 2026-10-05 00:44 | yes | 14 | 2 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 23:07 | yes | 21 | 8 s |
| Direct recommendation | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:27 | yes | 12 | 7 s |
| Direct recommendation | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-05 00:48 | yes | 22 | 34 s |
| Direct recommendation | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-05 00:47 | yes | 6 | 3 s |
| Direct recommendation | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 22:47 | yes | 9 | 19 s |
| Direct recommendation | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 23:34 | yes | 19 | 22 s |
| Direct recommendation | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 22:58 | yes | 18 | 57 s |
| Direct recommendation | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 22:22 | yes | 13 | 24 s |
| Direct recommendation | GPT-6 Luna | gpt-6-luna | 2026-10-05 00:39 | yes | 3 | 8 s |
| Direct recommendation | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 23:16 | yes | 13 | 15 s |
| Paraphrase | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-05 00:09 | yes | 13 | 7 s |
| Paraphrase | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-05 00:36 | yes | 2 | 3 s |
| Paraphrase | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 22:34 | yes | 14 | 23 s |
| Paraphrase | Perplexity Sonar | sonar | 2026-10-04 23:42 | yes | 20 | 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 00:11 | yes | 21 | 9 s |
| Paraphrase | Mistral Small | mistral/mistral-small via mistral | 2026-10-04 22:24 | yes | 5 | 4 s |
| Paraphrase | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-05 00:18 | yes | 24 | 57 s |
| Paraphrase | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 22:21 | yes | 5 | 2 s |
| Paraphrase | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 23:09 | no | 0 | 20 s |
| Paraphrase | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-05 00:19 | yes | 24 | 19 s |
| Paraphrase | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 23:41 | yes | 18 | 40 s |
| Paraphrase | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-05 00:29 | yes | 14 | 23 s |
| Paraphrase | GPT-6 Luna | gpt-6-luna | 2026-10-04 22:15 | yes | 4 | 14 s |
| Paraphrase | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 22:57 | yes | 13 | 18 s |
| Comparative | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-04 22:19 | yes | 16 | 12 s |
| Comparative | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:03 | yes | 3 | 5 s |
| Comparative | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:25 | yes | 15 | 27 s |
| Comparative | Perplexity Sonar | sonar | 2026-10-04 22:35 | yes | 17 | 5 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 23:43 | yes | 23 | 9 s |
| Comparative | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:14 | yes | 13 | 11 s |
| Comparative | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 22:51 | yes | 21 | 55 s |
| Comparative | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 22:51 | yes | 5 | 2 s |
| Comparative | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-04 23:11 | yes | 8 | 19 s |
| Comparative | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 22:56 | yes | 18 | 27 s |
| Comparative | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 23:42 | yes | 23 | 124 s |
| Comparative | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 22:12 | yes | 16 | 28 s |
| Comparative | GPT-6 Luna | gpt-6-luna | 2026-10-05 00:46 | yes | 6 | 21 s |
| Comparative | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 23:29 | yes | 14 | 23 s |
| Budget constrained | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-04 22:23 | yes | 9 | 7 s |
| Budget constrained | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 22:39 | yes | 3 | 10 s |
| Budget constrained | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:55 | yes | 18 | 23 s |
| Budget constrained | Perplexity Sonar | sonar | 2026-10-04 22:57 | 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) | 2026-10-05 00:32 | yes | 23 | 14 s |
| Budget constrained | Mistral Small | mistral/mistral-small via mistral | 2026-10-04 23:01 | yes | 5 | 4 s |
| Budget constrained | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-05 00:55 | yes | 25 | 39 s |
| Budget constrained | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-04 22:39 | yes | 5 | 2 s |
| Budget constrained | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 00:18 | yes | 10 | 26 s |
| Budget constrained | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 22:36 | yes | 18 | 20 s |
| Budget constrained | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 23:30 | yes | 14 | 93 s |
| Budget constrained | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-05 00:04 | yes | 5 | 17 s |
| Budget constrained | GPT-6 Luna | gpt-6-luna | 2026-10-04 22:41 | yes | 3 | 23 s |
| Budget constrained | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 22:52 | yes | 13 | 19 s |
| Scale constrained | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-04 23:15 | no | 0 | 5 s |
| Scale constrained | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 23:13 | no | 0 | 7 s |
| Scale constrained | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-04 22:38 | yes | 14 | 23 s |
| Scale constrained | Perplexity Sonar | sonar | 2026-10-04 22:54 | yes | 18 | 4 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 00:14 | yes | 13 | 9 s |
| Scale constrained | Mistral Small | mistral/mistral-small via mistral | 2026-10-05 00:39 | no | 0 | 9 s |
| Scale constrained | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-04 23:28 | yes | 20 | 41 s |
| Scale constrained | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-05 00:28 | yes | 5 | 4 s |
| Scale constrained | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 00:23 | yes | 5 | 20 s |
| Scale constrained | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 22:24 | yes | 10 | 17 s |
| Scale constrained | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-05 00:54 | no | 0 | 12 s |
| Scale constrained | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 23:55 | no | 0 | 6 s |
| Scale constrained | GPT-6 Luna | gpt-6-luna | 2026-10-04 22:22 | yes | 3 | 19 s |
| Scale constrained | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 23:15 | no | 0 | 2 s |
| Negative framing | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-10-04 23:30 | yes | 24 | 11 s |
| Negative framing | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-10-04 22:45 | yes | 7 | 8 s |
| Negative framing | Gemini 3.5 Flash | gemini-3.5-flash | 2026-10-05 00:31 | yes | 11 | 21 s |
| Negative framing | Perplexity Sonar | sonar | 2026-10-05 00:11 | yes | 18 | 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 00:23 | yes | 23 | 16 s |
| Negative framing | Mistral Small | mistral/mistral-small via mistral | 2026-10-04 22:47 | yes | 13 | 12 s |
| Negative framing | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-10-05 00:24 | yes | 21 | 57 s |
| Negative framing | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-10-05 00:15 | yes | 5 | 3 s |
| Negative framing | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-10-05 01:00 | no | 0 | 25 s |
| Negative framing | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-10-04 23:43 | yes | 24 | 32 s |
| Negative framing | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-10-04 22:55 | yes | 21 | 77 s |
| Negative framing | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-10-04 22:16 | yes | 16 | 29 s |
| Negative framing | GPT-6 Luna | gpt-6-luna | 2026-10-05 00:35 | yes | 4 | 19 s |
| Negative framing | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-10-04 23:37 | yes | 24 | 25 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
Informatica read as Informatica Address Verification
Melissa 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's 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's Address Verification API read as PostGrid Address Verification
PostGrid’s Address Verification API read as PostGrid Address Verification
USPS APIs read as USPS Address Validation API
USPS APIs (Direct Use) read as USPS Address Validation API
USPS Addresses API (Web Tools API) read as USPS Address Validation API
Unresolved, counted raw
Amazon Location Service
BatchData's Address Verification API
Capterra's Address Verification Software
GoAddress
Google Cloud (Address Validation API)
Google Geocoding API
Google Places API or Address Validation (Google Maps Platform)
Google’s free address validation API
Lob's Address Verification API
OpenCage
Payment AVS
PostGrid Essential
PostGrid's Address Verification & Validation Platform
Postman
Smarty's Address Verification API
SmartyStreets US Street Address API
SoftwareAdvice
The direct USPS API
Twilio
UPS Address Validation API
USPS Address Information API
USPS Address Lookup Tool
USPS tools
USPS's API
free USPS API
Discontinued, still offered
No shut-down product was recommended here.