# Address verification tools for enterprise buyers: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "address verification tool" and as "address validation API", six framings each, to fourteen models with search on, on behalf of an enterprise B2B company. Added to the November 2026 Edition. Page: https://www.gane.ai/index/gtm/gtm-data/address-verification/enterprise

**Standing:** Smarty leads with 32% of first choices; verdict contested. 57 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Smarty](https://www.gane.ai/index/gtm/vendors/smarty/index.md) | 32% | 7% | 59 |
| 2 | [Melissa Global Address Verification](https://www.gane.ai/index/gtm/vendors/melissa-global-address-verification/index.md) | 28% | 5% | 59 |
| 3 | [PostGrid Address Verification](https://www.gane.ai/index/gtm/vendors/postgrid-address-verification/index.md) | 18% | 12% | 42 |
| 4 | [Loqate](https://www.gane.ai/index/gtm/vendors/loqate/index.md) | 16% | 6% | 50 |
| 5 | [Experian Address Validation](https://www.gane.ai/index/gtm/vendors/experian-address-validation/index.md) | 2% | 0% | 13 |
| 8 | [Google Address Validation API](https://www.gane.ai/index/gtm/vendors/google-address-validation-api/index.md) | 2% | 55% | 11 |
| 9 | [Lob](https://www.gane.ai/index/gtm/vendors/lob/index.md) | 0% | 24% | 25 |

Rank is by share of first choices among all 75 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Melissa Global Address Verification, PostGrid Address Verification; alternatives Experian Address Verification, Informatica DaaS
- GPT-5.4 mini: Smarty; alternatives Loqate, Melissa Global Address Verification
- Gemini 3.5 Flash: Loqate; alternatives Experian Address Validation, Melissa Global Address Verification, Smarty
- Perplexity Sonar: Melissa Global Address Verification; alternatives Loqate, Smarty
- Grok 4.20: Smarty; alternatives Lob, Loqate, Melissa Global Address Verification, PostGrid Address Verification
- Mistral Small: PostGrid Address Verification, Smarty; alternatives Loqate, Melissa Global Address Verification
- DeepSeek V4 Flash: Smarty; alternatives Loqate, Melissa Data Quality Suite, PostGrid Address Verification
- Llama 4 Maverick: Smarty; alternatives Loqate, Melissa Global Address Verification, PostGrid Address Verification
- Qwen 3.7 Flash: Smarty; alternatives Loqate, Melissa Global Address Verification, PostGrid Address Verification
- Kimi K2: Smarty; alternatives Lob, Loqate, Melissa Global Address Verification
- GLM 4.7 FlashX: Loqate; alternatives Melissa Global Address Verification, PostGrid Address Verification
- MiniMax M2.5: PostGrid Address Verification; alternatives Lob, Mastercard Identity, Melissa Global Address Verification, Smarty
- GPT-6 Luna: Loqate; alternatives Dun & Bradstreet, Melissa Clean Suite, Smarty
- Muse Glimmer 30B: Loqate, PostGrid Address Verification, Smarty; alternatives Informatica Data Quality, Melissa Global Address Verification, WinPure Clean & Match

## Sources the answers cite

76 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- g2.com: 49 answers, 88 citations
- melissa.com: 40 answers, 78 citations
- loqate.com: 34 answers, 70 citations
- getapp.com: 29 answers, 39 citations
- smarty.com: 28 answers, 59 citations
- postgrid.com: 28 answers, 51 citations
- capterra.com: 24 answers, 31 citations
- softwareadvice.co.uk: 22 answers, 22 citations

Pages named in the most answers:

- https://g2.com/categories/address-verification/enterprise (34 answers)
- https://g2.com/articles/best-address-verification-software (24 answers)
- https://getapp.com/all-software/address-verification/org/large-enterprises (24 answers)
- https://melissa.com/address-experts/best-address-verification-apis-complete-comparison (22 answers)
- https://softwareadvice.co.uk/directory/4463/address-verification/software (22 answers)
- https://digi-texx.com/techblog/address-validation-software (19 answers)
- https://mastercard.com/us/en/news-and-trends/Insights/2024/options-for-global-address-verification-solution-avs.html (19 answers)
- https://loqate.com/en-us/address-verification (18 answers)
- https://softwareadvice.com/address-verification (17 answers)
- https://cufinder.io/blog/api/best-address-validation-apis (14 answers)

## Warned against

- Lob: 6 of 25 labels negative. "While services like Google Address Validation or Lob are popular, they typically charge per call" (Qwen 3.7 Flash, budget prompt)
- PostGrid Address Verification: 5 of 42 labels negative. "Excellent for e-commerce and US-centric operations, but may lack the deep global compliance features required by large financial or governmental institutions." (Qwen 3.7 Flash, negative prompt)
- Google Address Validation API: 6 of 11 labels negative. "Avoid pure pay-per-use tools (e.g., Google Address Validation API) that could spike with thousands of users." (Grok 4.20, budget prompt)
- Smarty: 4 of 59 labels negative. "Generally well-regarded, but some enterprise users note high costs for very high volumes and occasional API formatting issues... Use cautiously if budget is tight." (Qwen 3.7 Flash, negative prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
New leader: Melissa Global Address Verification (32%) to Smarty (32%). Margin 4 points, within noise.

- PostGrid Address Verification: 6% to 18%, +12. Cleared the floor by 1 point · rank 4 → 3 of 75.
- Melissa Global Address Verification: 32% to 28%, −4. Inside the floor by 7 points · rank 1 → 2 of 75.
- Loqate: 13% to 16%, +3. Inside the floor by 8 points · rank 3 → 4 of 75.
- Smarty: 30% to 32%, +2. Inside the floor by 9 points · rank 2 → 1 of 75.
- Experian Address Validation: 4% to 2%, −2. Inside the floor by 9 points · rank 5 of 75, unchanged.
- GeoPostcodes: 4% to 2%, −2. Inside the floor by 9 points · rank 6 of 75, unchanged.
- Google Address Validation API: 0% to 2%, +2. Inside the floor by 9 points · rank 73 → 8 of 75.
- Lob: 0% to 0%, ±0. Inside the floor by 11 points · rank 13 → 9 of 75.

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/gtm.