Index › GTM › GTM data and infrastructure › Address verification › Small business · November 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. 49 first choices recorded across the direct, paraphrase, budget and scale prompts, fourteen models each. Added to the November 2026 Edition.
Standing · first-choice share
78%
Clear leader
78Smarty14PostGrid Address Verification02Google Maps Address Validation API06others
78% of first choices, clear leader.
Since October 2026▲+11Since October 2026: 67% → 78%, +11 points. Inside the 11-point floor: within noise.Smarty held the lead, +11 points on 67%, inside the 11-point floor.
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.
Small business
Smarty78%Clear leader▲+11Since October 2026: 67% → 78%, +11 points. Inside the 11-point floor: within noise.This pageMid-marketSmarty73%Clear leader▲+26Since October 2026: 47% → 73%, +26 points. Past the 11-point floor: movement.Standing →EnterpriseSmarty32%Contested↗new leaderNew leader since October 2026: Smarty (32%) replaces Melissa Global Address Verification (32% then, 28% now), 4 points clear, inside the 11-point floor.Standing →
Smarty78%Clear leader▲+11Since October 2026: 67% → 78%, +11 points. Inside the 11-point floor: within noise.This pageMid-marketSmarty73%Clear leader▲+26Since October 2026: 47% → 73%, +26 points. Past the 11-point floor: movement.Standing →EnterpriseSmarty32%Contested↗new leaderNew leader since October 2026: Smarty (32%) replaces Melissa Global Address Verification (32% then, 28% now), 4 points clear, inside the 11-point floor.Standing →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 rateLabelsQuadrantSince October 2026
01Smarty78%4%67endorsed leader▲+11Since October 2026: 67% → 78%, +11 points. Inside the 11-point floor: within noise.67% → 78%
Smarty78%4%67endorsed leader▲+11Since October 2026: 67% → 78%, +11 points. Inside the 11-point floor: within noise.67% → 78%02
PostGrid Address Verification14%2%46accepted challenger▲+2Since October 2026: 12% → 14%, +2 points. Inside the 11-point floor: within noise.12% → 14%
PostGrid Address Verification14%2%46accepted challenger▲+2Since October 2026: 12% → 14%, +2 points. Inside the 11-point floor: within noise.12% → 14%Show the four products at 0%, ordered by negative rate
06Google Address Validation API Lab in the set0%23%22accepted challenger▼−4Since October 2026: 4% → 0%, −4 points. Inside the 11-point floor: within noise.4% → 0%
03
Melissa Global Address Verification0%20%40accepted challenger▼−6Since October 2026: 6% → 0%, −6 points. Inside the 11-point floor: within noise.6% → 0%
Melissa Global Address Verification0%20%40accepted challenger▼−6Since October 2026: 6% → 0%, −6 points. Inside the 11-point floor: within noise.6% → 0%05
Loqate0%17%30accepted challenger=heldSince October 2026: 0% → 0%, ±0 points. Inside the 11-point floor: within noise.0% → 0%
Loqate0%17%30accepted challenger=heldSince October 2026: 0% → 0%, ±0 points. Inside the 11-point floor: within noise.0% → 0%04
Lob0%4%23accepted challenger=heldSince October 2026: 0% → 0%, ±0 points. Inside the 11-point floor: within noise.0% → 0%
Lob0%4%23accepted challenger=heldSince October 2026: 0% → 0%, ±0 points. Inside the 11-point floor: within noise.0% → 0%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. Both editions asked the same fourteen models. 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 zero times of 52. Lab treatment is defined on the method page; the row is marked, not excluded.
Head to headHead-to-head pages are published for mid-market buyers, so these open on mid-market figures, not small business.
All six head-to-head pages: the top four products, each against each
One product takes 78% of first choices here, so the chart would put five 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. Zero products carry a negative rate above 25% in this category.
What they warned about
Nine of fourteen models held their first choice under the paraphrase. Claude Haiku 4.5, GPT-5.4 mini, 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.
Melissa Global Address Verification20%
8 of 40 labels negative · 5 of 14 models
“Avoids the high costs of enterprise tools (e.g., Melissa or Loqate, which can start at $100+/month or require volume commitments)” Grok 4.20, budget prompt
Google Maps100%
4 of 4 labels negative · 4 of 14 models · 3 hard negative
“Google Maps or basic geocoding APIs used as the sole verifier. They can locate or format an address without proving that it exists, is deliverable, or belongs to the customer.” Perplexity Sonar, negative prompt
Google Address Validation API
23%
5 of 22 labels negative · 4 of 14 models · 2 hard negative
“Free/open-source options (e.g., basic Google Address Validation) lack depth, support, or compliance certifications.” Grok 4.20, comparative prompt
Loqate17%
5 of 30 labels negative · 3 of 14 models · 1 hard negative
“Loqate — Enterprise-focused; pricing not transparent, often expensive for small volume” Kimi K2, 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
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. 804 links across 155 sites, every framing counted. Ranked by the number of answers carrying the site or page. 10 of the 252 answers across every segment cited this index's own page for the category; the method page measures whether that reading tilts an answer.
48 answers · 83 citations · 13 models
vendor site · Capterra36 answers · 46 citations · 11 models
vendor site · Smarty34 answers · 65 citations · 13 models
vendor site · Software Advice33 answers · 35 citations · 10 models
vendor site · Software Advice26 answers · 26 citations · 9 models
vendor site · Loqate23 answers · 43 citations · 9 models
vendor site · GetApp23 answers · 23 citations · 10 models
22 answers · 22 citations · 11 models
vendor site · Melissa20 answers · 22 citations · 11 models
vendor site · PostGrid17 answers · 26 citations · 7 models
vendor site · Capterra17 answers · 18 citations · 8 models
vendor site · Google Search15 answers · 18 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.
30 answers · 12 models
26 answers · 9 models
24 answers · 10 models
22 answers · 11 models
21 answers · 10 models
19 answers · 9 models
17 answers · 8 models
17 answers · 8 models
13 answers · 8 models
11 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 | 78% | 177 | 12,100 | 6,510 | 503,269 | 120 | 2 | |
| PostGrid Address Verification postgrid.com | 14% | 135 | 90 | 1 | 196,042 | $765 | 120 | |
| Google Maps Address Validation API | 2% | |||||||
| Smarty's US Street Address API | 2% | |||||||
| sthan.io sthan.io | 2% | 3 | ||||||
| USPS Web Tools usps.com USPS Web Tools 2%, USPS Web Tools API 0% | 2% | 5 | 1 | |||||
| Melissa Global Address Verification melissa.com | 0% | 134 | 40 | 3 | 197,334 | 29 | 5 | |
| Lob lob.com | 0% | 302 | 27,100 | 6,319 | 55,936 | 10 | 4 | |
| Loqate loqate.com | 0% | 104 | 720 | 17 | 127,878 | 52 | ||
| Google parent site Google Address Validation API 0% | 0% | 49 | 720 | 24 |
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 VerificationChangedPostGrid Address Verificationagainst: EasyPostSmartyno first choiceagainst: Compliancely, ComplyCube, Microblink, PostGrid Address Verification, Smarty
Two alternatives
Experian Address Validation, PostGrid Address VerificationThree alternatives
Google Address Validation API, Smarty, USPSFour alternatives
Melissa Global Address Verification, Radar, Smarty, TwilioThree alternatives
Melissa Global Address Verification, PostGrid Address Verification, SumsubGPT-5.4 miniSmartyGoogle Maps Address Validation APIChangedSmartyUSPS Web Toolsno first choicenothing named
Four alternatives
Data8, Melissa Global Address Verification, PostGrid Address Verification, PostcoderTwo alternatives
Lob, Melissa Global Address VerificationThree alternatives
Loqate, Melissa Global Address Verification, USPS Web ToolsTwo alternatives
AddressValid, SmartyGemini 3.5 FlashSmartyagainst: Google Maps APISmartyHeldSmartySmartySmartyagainst: Google Places APIagainst: Experian Address Validation, Google Maps API, Informatica Address Verification, Loqate
Four alternatives
Lob, Loqate, Melissa Global Address Verification, PostGrid Address VerificationFour alternatives
EasyPost, Google Maps Address Validation API, Loqate, ShippoFive alternatives
EasyPost, Google Address Validation API, Lob, Loqate, ShippoThree alternatives
EasyPost, Google Maps Platform, USPS Web Tools APITwo alternatives
Loqate, RadarPerplexity SonarSmartySmartyHeldSmartyPostGrid Address Verificationno first choiceagainst: Google Maps
Three alternatives
Loqate, Melissa Global Address Verification, PostGrid Address VerificationFour alternatives
Google Address Validation API, Lob, Loqate, Melissa Global Address VerificationSeven alternatives
Data8, Google Address Validation API, Lob, Loqate, Melissa Global Address Verification, PostGrid Address Verification, PostcoderOne alternative
SmartyGrok 4.20SmartySmartyHeldagainst: Experian Address Validation, Loqate, Melissa Global Address Verification, USPS Address Validation APISmartyagainst: Google Address Validation API, Melissa Global Address Verification, Plaid, PreciselySmartyagainst: Loqate, Melissa Global Address Verificationno first choiceagainst: Google Maps API
Three alternatives
GeoPostcodes, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Google Address Validation API, LobTwo alternatives
Loqate, PostGrid Address VerificationThree alternatives
Google Address Validation API, PostGrid Address Verification, USPS Web Tools APIMistral SmallSmartySmartyHeldByteplant's Address-Validator, Smartyagainst: Experian Address ValidationSmartyno first choiceagainst: Experian Address Validation, Google Maps, Informatica DaaS
Two alternatives
Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
Google Address Validation API, LobThree alternatives
Loqate, Melissa Global Address Verification, PostGrid Address VerificationTwo alternatives
GeoPostcodes, PostGrid Address VerificationDeepSeek V4 FlashSmartySmartyHeldSmartyagainst: Melissa Global Address Verification, Radarsthan.iono first choiceagainst: Free USPS address verification, Google Address Validation API, Google Maps, Google Places Autocomplete, Informatica Address Verification, Melissa Global Address Verification, UPS Address Validation
Two alternatives
Lob, PostGrid Address VerificationTwo alternatives
Loqate, PostGrid Address VerificationTwo alternatives
Lob Address Verification, PostGrid Address VerificationThree alternatives
Lob Address Verification, PostGrid Address Verification, SmartyLlama 4 MaverickSmartySmartyHeldSmartyPostGrid Address Verification, Smartyno first choiceagainst: Smarty
Three alternatives
Loqate, Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Google Address Validation API, Lob, PostGrid Address VerificationThree alternatives
Addressfinder, ComplyCube, PostGrid Address VerificationQwen 3.7 FlashSmartySmartyHeldSmartyagainst: Google Places API, Melissa Global Address VerificationSmartyagainst: Google Places APISmartyagainst: Google Places APInothing named
Three alternatives
HubSpot Breeze Intelligence, Loqate, Resend.aiTwo alternatives
Google Maps Platform, Melissa Global Address VerificationTwo alternatives
Lob, PostGrid Address VerificationTwo alternatives
PostGrid Address Verification, ZipCodeLookup.ioTwo alternatives
Loqate, PostGrid Address VerificationKimi K2SmartySmartyHeldagainst: Loqate, USPS Address Validation APIPostGrid Address Verification, Smartyagainst: Google Address Validation API, Loqate, Melissa Global Address VerificationSmartyagainst: USPS Address VerificationSmartyagainst: Australia Post, DHL, FedEx, Google Address Validation API, Google Maps, UPS
Two alternatives
Addressfinder, PostGrid Address VerificationThree alternatives
EasyPost, Google Address Validation API, PostGrid Address VerificationTwo alternatives
Lob Address Verification, ShippoFive alternatives
Addressy, Byteplant, Ideal Postcodes, Melissa Global Address Verification, PostGrid Address VerificationGLM 4.7 FlashXSmartyagainst: Melissa Global Address VerificationSmartyHeldagainst: Lob, Melissa Clean Suite, USPS Verify APIPostGrid Address Verification, SmartyPostGrid Address Verificationno first choicenothing named
One alternative
PostGrid Address VerificationOne alternative
Google Address Validation APIFour alternatives
ComplyCube, Google Maps Platform Address Validation, Lob, Melissa Global Address VerificationFive alternatives
Addressfinder, Byteplant Address Validator, Data8, Loqate, SmartyMiniMax M2.5PostGrid Address Verification, SmartySmartyChangedSmartyPostGrid Address Verification, Smartyno first choiceagainst: Smarty
Two alternatives
Lob, Melissa Global Address VerificationTwo alternatives
Google Address Validation API, Melissa Global Address VerificationTwo alternatives
Lob, PostGrid Address VerificationOne alternative
AddressfinderGPT-6 LunaSmartyagainst: USPSSmarty's US Street Address APIChangedagainst: USPS Address Validation APISmartyagainst: Google Address Validation API, USPS Address Validation APISmartyno first choiceagainst: Google Geocoding API, USPS Address Validation API, USPS Web Tools
Two alternatives
Loqate, Melissa Global Address VerificationOne alternative
Google Address Validation APITwo alternatives
Lob, Melissa Global Address VerificationTwo alternatives
Melissa Global Address Verification, USPS's APIMuse Glimmer 30BPostGrid Address Verification, SmartySmartyChangedagainst: USPS Web ToolsLob Address Verification, SmartySmartyno first choicenothing named
Two alternatives
Google Address Validation API, PostGrid Address VerificationFour alternatives
Google Address Validation API, Loqate, Melissa Global Address Verification, PostGrid Address VerificationThree alternatives
Apify US Address Checker, Lob Address Verification, PostGrid 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 | 2026-11-01 09:44 | yes | 10 | 8 s |
| Direct recommendation | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-11-01 15:23 | yes | 3 | 5 s |
| Direct recommendation | Gemini 3.5 Flash | gemini-3.6-flash (asked for gemini-3.5-flash; the API answered as this version) | 2026-11-01 15:10 | yes | 9 | 23 s |
| Direct recommendation | Perplexity Sonar | sonar | 2026-11-01 13:38 | yes | 10 | 3 s |
| Direct recommendation | Grok 4.20 | spacexai/grok-4.20-non-reasoning via xai | 2026-11-01 14:20 | yes | 5 | 8 s |
| Direct recommendation | Mistral Small | mistral/mistral-small via mistral | 2026-11-01 09:11 | yes | 5 | 3 s |
| Direct recommendation | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-11-01 08:54 | yes | 21 | 24 s |
| Direct recommendation | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-11-01 16:49 | yes | 5 | 3 s |
| Direct recommendation | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-11-01 09:24 | no | 0 | 25 s |
| Direct recommendation | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-11-01 17:16 | yes | 5 | 11 s |
| Direct recommendation | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-11-01 16:14 | yes | 18 | 58 s |
| Direct recommendation | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-11-01 09:06 | yes | 5 | 17 s |
| Direct recommendation | GPT-6 Luna | gpt-6-luna | 2026-11-01 10:20 | yes | 3 | 9 s |
| Direct recommendation | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-11-01 13:12 | yes | 12 | 18 s |
| Paraphrase | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-11-01 15:44 | yes | 17 | 7 s |
| Paraphrase | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-11-01 12:56 | yes | 4 | 6 s |
| Paraphrase | Gemini 3.5 Flash | gemini-3.6-flash (asked for gemini-3.5-flash; the API answered as this version) | 2026-11-01 12:38 | no | 0 | 15 s |
| Paraphrase | Perplexity Sonar | sonar | 2026-11-01 09:31 | yes | 10 | 3 s |
| Paraphrase | Grok 4.20 | spacexai/grok-4.20-non-reasoning via xai | 2026-11-01 16:11 | yes | 5 | 8 s |
| Paraphrase | Mistral Small | mistral/mistral-small via mistral | 2026-11-01 09:10 | yes | 5 | 4 s |
| Paraphrase | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-11-01 15:10 | yes | 25 | 25 s |
| Paraphrase | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-11-01 14:43 | yes | 5 | 3 s |
| Paraphrase | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-11-01 15:57 | no | 0 | 26 s |
| Paraphrase | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-11-01 11:03 | yes | 18 | 19 s |
| Paraphrase | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-11-01 13:27 | yes | 9 | 16 s |
| Paraphrase | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-11-01 12:10 | yes | 10 | 40 s |
| Paraphrase | GPT-6 Luna | gpt-6-luna | 2026-11-01 08:58 | yes | 3 | 10 s |
| Paraphrase | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-11-01 15:16 | yes | 14 | 19 s |
| Comparative | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-11-01 17:27 | yes | 9 | 10 s |
| Comparative | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-11-01 08:35 | yes | 6 | 7 s |
| Comparative | Gemini 3.5 Flash | gemini-3.6-flash (asked for gemini-3.5-flash; the API answered as this version) | 2026-11-01 09:35 | yes | 10 | 26 s |
| Comparative | Perplexity Sonar | sonar | 2026-11-01 12:00 | yes | 10 | 5 s |
| Comparative | Grok 4.20 | spacexai/grok-4.20-non-reasoning via xai | 2026-11-01 15:03 | yes | 10 | 16 s |
| Comparative | Mistral Small | mistral/mistral-small via mistral | 2026-11-01 09:49 | yes | 5 | 7 s |
| Comparative | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-11-01 09:47 | yes | 23 | 44 s |
| Comparative | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-11-01 13:10 | yes | 5 | 3 s |
| Comparative | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-11-01 13:53 | yes | 10 | 24 s |
| Comparative | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-11-01 13:17 | yes | 24 | 32 s |
| Comparative | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-11-01 17:13 | yes | 18 | 147 s |
| Comparative | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-11-01 10:08 | yes | 10 | 44 s |
| Comparative | GPT-6 Luna | gpt-6-luna | 2026-11-01 13:05 | yes | 6 | 23 s |
| Comparative | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-11-01 10:54 | yes | 15 | 34 s |
| Budget constrained | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-11-01 08:48 | yes | 9 | 7 s |
| Budget constrained | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-11-01 17:13 | yes | 4 | 5 s |
| Budget constrained | Gemini 3.5 Flash | gemini-3.6-flash (asked for gemini-3.5-flash; the API answered as this version) | 2026-11-01 09:17 | yes | 10 | 18 s |
| Budget constrained | Perplexity Sonar | sonar | 2026-11-01 09:42 | yes | 10 | 2 s |
| Budget constrained | Grok 4.20 | spacexai/grok-4.20-non-reasoning via xai | 2026-11-01 14:46 | yes | 5 | 6 s |
| Budget constrained | Mistral Small | mistral/mistral-small via mistral | 2026-11-01 13:07 | yes | 5 | 4 s |
| Budget constrained | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-11-01 12:55 | yes | 22 | 24 s |
| Budget constrained | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-11-01 09:56 | yes | 5 | 2 s |
| Budget constrained | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-11-01 17:29 | yes | 5 | 19 s |
| Budget constrained | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-11-01 15:49 | yes | 9 | 32 s |
| Budget constrained | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-11-01 11:38 | yes | 20 | 26 s |
| Budget constrained | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-11-01 13:02 | yes | 5 | 40 s |
| Budget constrained | GPT-6 Luna | gpt-6-luna | 2026-11-01 11:53 | yes | 3 | 18 s |
| Budget constrained | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-11-01 17:18 | yes | 14 | 18 s |
| Scale constrained | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-11-01 13:51 | no | 0 | 5 s |
| Scale constrained | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-11-01 09:00 | no | 0 | 7 s |
| Scale constrained | Gemini 3.5 Flash | gemini-3.6-flash (asked for gemini-3.5-flash; the API answered as this version) | 2026-11-01 15:41 | no | 0 | 16 s |
| Scale constrained | Perplexity Sonar | sonar | 2026-11-01 14:52 | yes | 10 | 7 s |
| Scale constrained | Grok 4.20 | spacexai/grok-4.20-non-reasoning via xai | 2026-11-01 16:54 | yes | 5 | 10 s |
| Scale constrained | Mistral Small | mistral/mistral-small via mistral | 2026-11-01 15:02 | no | 0 | 8 s |
| Scale constrained | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-11-01 17:27 | yes | 9 | 29 s |
| Scale constrained | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-11-01 10:57 | yes | 5 | 4 s |
| Scale constrained | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-11-01 14:38 | yes | 19 | 31 s |
| Scale constrained | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-11-01 09:31 | yes | 10 | 44 s |
| Scale constrained | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-11-01 12:39 | yes | 20 | 101 s |
| Scale constrained | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-11-01 14:23 | yes | 5 | 39 s |
| Scale constrained | GPT-6 Luna | gpt-6-luna | 2026-11-01 14:03 | no | 0 | 11 s |
| Scale constrained | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-11-01 13:04 | yes | 15 | 22 s |
| Negative framing | Claude Haiku 4.5 | claude-haiku-4-5-20251001 | 2026-11-01 13:24 | yes | 18 | 10 s |
| Negative framing | GPT-5.4 mini | gpt-5.4-mini-2026-03-17 | 2026-11-01 12:45 | yes | 6 | 7 s |
| Negative framing | Gemini 3.5 Flash | gemini-3.6-flash (asked for gemini-3.5-flash; the API answered as this version) | 2026-11-01 15:31 | no | 0 | 17 s |
| Negative framing | Perplexity Sonar | sonar | 2026-11-01 11:35 | yes | 10 | 5 s |
| Negative framing | Grok 4.20 | spacexai/grok-4.20-non-reasoning via xai | 2026-11-01 14:59 | yes | 11 | 14 s |
| Negative framing | Mistral Small | mistral/mistral-small via mistral | 2026-11-01 17:12 | yes | 5 | 5 s |
| Negative framing | DeepSeek V4 Flash | deepseek/deepseek-v4-flash via deepinfra | 2026-11-01 15:51 | yes | 24 | 52 s |
| Negative framing | Llama 4 Maverick | meta/llama-4-maverick via bedrock | 2026-11-01 11:59 | yes | 5 | 3 s |
| Negative framing | Qwen 3.7 Flash | alibaba/qwen3.7-flash via alibaba | 2026-11-01 09:47 | yes | 22 | 104 s |
| Negative framing | Kimi K2 | moonshotai/kimi-k2 via novita | 2026-11-01 13:21 | yes | 24 | 61 s |
| Negative framing | GLM 4.7 FlashX | zai/glm-4.7-flashx via zai | 2026-11-01 12:36 | yes | 22 | 64 s |
| Negative framing | MiniMax M2.5 | minimax/minimax-m2.5 via minimax | 2026-11-01 13:57 | yes | 9 | 39 s |
| Negative framing | GPT-6 Luna | gpt-6-luna | 2026-11-01 12:14 | yes | 4 | 23 s |
| Negative framing | Muse Glimmer 30B | meta/muse-glimmer-30b via togetherai | 2026-11-01 08:52 | yes | 23 | 30 s |
Normalization in this category
Every judgment call made between the raw labels and the numbers above, listed so it is visible and reversible.
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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
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 (formerly Melissa Data) read as Melissa Global Address Verification
Melissa Data read as Melissa Global Address Verification
Melissa Data (Clean Suite) read as Melissa Global Address Verification
PostGrid read as PostGrid Address Verification
USPS API read as USPS Address Validation API
USPS Addresses API read as USPS Address Validation API
Unresolved, counted raw
AccuMail
AddressValid
Apify US Address Checker
Australia Post
Compliancely
DHL
Eircode
Firstlogic
Firstlogic Verify Address Tool
Free USPS address verification
Google Geocoding API
Google Maps Address Validation Demo
Google Maps Platform
Google Maps Platform (Places API)
Google Maps Platform Address Validation
Google Places Autocomplete
Mastercard's Address Risk API
Resend.ai
ServiceObjects
ShipStation integrations
Smarty's US Street Address API
StrikeIron
Twilio
UPS Address Validation (free tier)
USPS Address Verification
USPS Verify API
USPS ZIP Code Lookup
USPS's API
ZipCodeLookup.io
Discontinued, still offered
No shut-down product was recommended here.