# Best business verification API in 2026 > [Didit](https://datacircle.dev/business-verification-apis/didit/top-up-from-50), [CompanyData.com](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly) and [OpenSOSData](https://datacircle.dev/business-verification-apis/opensosdata/500-pack-enterprise-post-v1-lookup) are the best business verification API providers in our benchmark. We benchmarked 7 providers and rank the 5 we score. For the three we score highest, we show each one's top scoring plan, each part of the plan's score and what 1,000 companies cost. We rank 527 plans by price. [KVK's €6.40 monthly plan](https://datacircle.dev/business-verification-apis/kvk/6-40-monthly) is the cheapest paid plan per 1,000 companies: as little as $0.024. KVK's €6.40 monthly plan covers up to 300,000 companies a month at no extra cost. 1. [Didit, top-up from $50: Business verification API](https://datacircle.dev/business-verification-apis/didit/top-up-from-50): Overall score 67.9 (Price 21, Data 96, Cost to get started 82, Bundle 94, Performance 100), $500.00 per 1,000 companies - It returns 5 of the 11 key fields we check: Registered name, Entity number, Entity type, Status, Principal address. - On 1 November 2026, we sent this provider all 20 companies in our benchmark. - This plan scored 0.9643 out of 1 on those 20 companies. That gives this plan a Data score of 96 out of 100. 2. [CompanyData.com, $249 monthly: Business verification API](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly): Overall score 64.5 (Price 23, Data 93, Cost to get started 67, Bundle 80, Performance 100), $39.84 per 1,000 companies - It returns 2 of the 11 key fields we check: Registered name, Principal address. - On 1 November 2026, we sent this provider all 20 companies in our benchmark. - This plan scored 0.9286 out of 1 on those 20 companies. That gives this plan a Data score of 93 out of 100. 3. [OpenSOSData, $500 pack, Enterprise: Business verification API](https://datacircle.dev/business-verification-apis/opensosdata/500-pack-enterprise-post-v1-lookup): Overall score 46.4 (Price 26, Data 66, Cost to get started 65, Bundle 75, Performance 2), $31.40 per 1,000 companies - It returns all 11 key fields we check: Registered name, Entity number, Tax ID, Entity type, Status, Good standing, Formation date, Registered agent, Principal address, Officers, Filings. - We scored this provider on 4 of the 20 companies in our benchmark. We sent this provider those 4 companies on 1 November 2026. - This plan scored 0.9643 out of 1 on those 4 companies. We trust a score on 4 companies less than a score on all 20. So we lower this plan's Data score to 66 out of 100. The Data score on business verification APIs: The score out of 100 is the share of companies a call gets right. We give each call a company's legal name and the two-letter code of the state the company formed in. A call gets a registered company right by finding the company under that name in that state. A call gets a made-up name right by finding no company. We set aside case, punctuation and how the suffix is spelled when we compare names. A call that fails or gives no answer counts as not right. Registered companies count for half the score. Made-up names count for the other half. A call that gets every made-up name wrong scores 0. A call that gets every registered company wrong also scores 0. Some providers ran on only part of the companies. We compare each part-run provider with the providers that ran on every company. In that comparison, we score each provider on the same companies: the ones the part-run provider ran on. A provider can't score higher by running only on easy companies. A provider that keeps a copy of the records can miss a company. The copy can also hold an old name for a company. We score a missing company or an old name as wrong, the same as for any other provider. We lower the score when we test the call on fewer companies than the benchmark has. ## Every business verification API provider we score, ranked 1. [Didit, top-up from $50](https://datacircle.dev/business-verification-apis/didit/top-up-from-50): Overall score 67.9, Data score 96, $500.00 per 1,000 companies 2. [CompanyData.com, $249 monthly](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly): Overall score 64.5, Data score 93, $39.84 per 1,000 companies 3. [OpenSOSData, $500 pack, Enterprise](https://datacircle.dev/business-verification-apis/opensosdata/500-pack-enterprise-post-v1-lookup): Overall score 46.4, Data score 66, $31.40 per 1,000 companies 4. [GLEIF, free](https://datacircle.dev/business-verification-apis/gleif/free): Overall score 0.0, Data score 0, $0.00 per 1,000 companies. We give it 0 overall because its Data score is 0. 5. [OneShot, pay as you go](https://datacircle.dev/business-verification-apis/oneshot/pay-as-you-go): Overall score 0.0, Data score 0, $5.00 per 1,000 companies. We give it 0 overall because its Data score is 0. We don't rank 2 other providers we benchmarked: [Cobalt Intelligence](https://datacircle.dev/business-verification-apis/cobalt-intelligence/contact-us-committed-volume-tiers-post-fullverification) and [Registry Lookup](https://datacircle.dev/business-verification-apis/registry-lookup/contact-us). Each Cobalt Intelligence and Registry Lookup plan is free or priced on request. We don't score these plans. Last updated: November 1, 2026. The page: https://datacircle.dev/best-business-verification-api. Every plan: https://datacircle.dev/business-verification-api-pricing. The benchmark: https://datacircle.dev/business-verification-api-pricing/benchmark.csv.