Best company data enrichment APIs for B2B lead scoring
2 models · updated 2026-08-09
The verdict
Clearbit leads — All 2 models rank Clearbit the top pick.
As of 2026-08-09, Claude and Gemini collectively rank Clearbit #1 for company data enrichment apis for b2b lead scoring on ModelsAgree — unanimous among the 2 models that have answered. The models' case: Cleanest real-time company enrichment API in the category — resolves a domain/email to reliable firmographics (industry, size, revenue, location) plus strong. The models' main caveat: Post-HubSpot acquisition it's increasingly optimized for HubSpot users — standalone/high-volume API access and pricing are less friendly, and North. The strongest alternative is ZoomInfo — Broadest and deepest verified B2B coverage (firmographics, org hierarchies, contacts) plus first-party Intent signals, so it feeds both the fit and. Source: https://modelsagree.com/best/best-company-data-enrichment-apis-for-b2b-lead-scoring (modelsagree.com, CC BY 4.0).
Combined ranking
- 1Claude #1Gemini #1
Cleanest real-time company enrichment API in the category — resolves a domain/email to reliable firmographics (industry, size, revenue, location) plus strong technographics, with low-latency single-record lookups that slot directly into a scoring pipeline; generous fit signals and stable schema make it the default first pick for a RevOps engineer building an ICP score.
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Claude Cleanest real-time company enrichment API in the category — resolves a domain/email to reliable firmographics (industry, size, revenue, location) plus strong technographics, with low-latency single-record lookups that slot directly into a scoring pipeline; generous fit signals and stable schema make it the default first pick for a RevOps engineer building an ICP score.
Gemini Provides sub-second latency REST endpoints designed specifically for real-time lead scoring during form submit, offering precise firmographics, technographics, and domain resolution for tech and SaaS sectors.
Where it falls shortper Claude Post-HubSpot acquisition it's increasingly optimized for HubSpot users — standalone/high-volume API access and pricing are less friendly, and North America coverage outclasses its international depth.
per Gemini High per-call cost and lower fill rates for traditional non-digital SMBs outside North America.
- 2Claude #2Gemini #2
Broadest and deepest verified B2B coverage (firmographics, org hierarchies, contacts) plus first-party Intent signals, so it feeds both the fit and the timing halves of a lead score from one source; unmatched for depth on mid-market/enterprise accounts.
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Claude Broadest and deepest verified B2B coverage (firmographics, org hierarchies, contacts) plus first-party Intent signals, so it feeds both the fit and the timing halves of a lead score from one source; unmatched for depth on mid-market/enterprise accounts.
Gemini Delivers the deepest firmographic depth, organizational hierarchy, intent signals, and revenue data across US enterprise and mid-market accounts for complex ICP scoring models.
Where it falls shortper Claude Expensive enterprise contracts with API as a metered add-on — overkill and cost-prohibitive for small teams, and rigid annual commitments punish spiky usage.
per Gemini Prohibitive minimum annual contract costs and restrictive API usage quotas make it inaccessible to smaller or budget-conscious teams.
- 3Claude #4Gemini #3
Offers an unbeatable volume-to-cost ratio with massive global firmographic and technographic database coverage, enabling scalable scoring for high-volume inbound/outbound pipelines (near-tie with Clearbit on mid-market utility).
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Gemini Offers an unbeatable volume-to-cost ratio with massive global firmographic and technographic database coverage, enabling scalable scoring for high-volume inbound/outbound pipelines (near-tie with Clearbit on mid-market utility).
Claude Best value for money — combined database + enrichment API + engagement at a fraction of ZoomInfo's cost, with solid firmographic coverage and a usable API tier, making it the pragmatic choice for SMB and startup RevOps teams.
Where it falls shortper Claude Data depth and accuracy sit below ZoomInfo/Clearbit, especially for enterprise hierarchies and non-US regions; not for teams whose scoring demands top-tier precision.
per Gemini Higher frequency of stale firmographic data points and lower field accuracy in non-tech legacy verticals.
- 4Claude #3Gemini —
Truly API-first, data-as-a-service model built for engineers — bulk person+company records with a flexible schema you can pour straight into a custom scoring model or warehouse, priced for programmatic use rather than seats; best when you want to own the scoring logic.
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Claude Truly API-first, data-as-a-service model built for engineers — bulk person+company records with a flexible schema you can pour straight into a custom scoring model or warehouse, priced for programmatic use rather than seats; best when you want to own the scoring logic.
Where it falls shortper Claude You get raw data, not a sales workflow or verification layer — recency and per-field accuracy vary, so you must invest in enrichment waterfalls and QA yourself.
- 5Claude #5Gemini #5
Strongest compliance posture (GDPR/CCPA, Diamond phone-verified data) with genuinely good EMEA coverage that most US-centric providers lack — the right enrichment source when your scoring must run on clean, consent-safe European data.
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Claude Strongest compliance posture (GDPR/CCPA, Diamond phone-verified data) with genuinely good EMEA coverage that most US-centric providers lack — the right enrichment source when your scoring must run on clean, consent-safe European data.
Gemini Leads in GDPR/CCPA-compliant EMEA and international B2B company data enrichment, delivering reliable firmographics where US-centric data sources suffer high drop-off rates.
Where it falls shortper Claude US coverage and technographic breadth trail the leaders, and it's sold as a platform with API access gated behind sales, so it's less plug-and-play for a pure developer integration.
per Gemini Narrower technographic coverage and lower firmographic granularity for North American SMBs compared to ZoomInfo.
- 6Claude —Gemini #4
Operates a waterfall enrichment orchestration engine combining 75+ data vendors to maximize match rates and enrich custom signals for hyper-targeted lead scoring models.
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Gemini Operates a waterfall enrichment orchestration engine combining 75+ data vendors to maximize match rates and enrich custom signals for hyper-targeted lead scoring models.
Where it falls shortper Gemini Adds schema normalization complexity and multi-vendor credit management compared to single-provider API integrations.
By use case
How this board's leaders rank when the same four models are asked a more specific question.
| Product | This board | Contact API SaaS Sales Teams | API Product-Led Growth |
|---|---|---|---|
| Clearbit | #1 | — | — |
| ZoomInfo | #2 | #3 | #8 |
| Apollo.io | #3 | #1 | #2 |
| People Data Labs | #4 | #2 | #1 |
| Cognism | #5 | #4 | #9 |
| Clay | #6 | #6 | #5 |
Just missed the top 5
Claude Coresignal — excellent developer-first firmographic/employee-count data feeds for building pipelines, but rawer and less sales-tuned than PDL — a near-tie for the #3 slot · Clay — superb enrichment orchestration that waterfalls across many of these providers, but it's an aggregation layer, not itself a data source, so it doesn't compete as a primary enrichment API
Gemini Crunchbase API — Provides unmatched startup funding and growth signals, but lacks broad firmographic coverage for traditional non-tech enterprises · Lusha API — Strong for direct contact details, but offers insufficient company-level firmographic depth for algorithmic account scoring
By model
Claude
- 1.Clearbit
- 2.ZoomInfo
- 3.People Data Labs
- 4.Apollo.io
- 5.Cognism
Gemini
- 1.Clearbit
- 2.ZoomInfo
- 3.Apollo.io
- 4.Clay
- 5.Cognism
Common questions
What is the best company data enrichment apis for b2b lead scoring according to AI models?
Clearbit leads. All 2 models rank Clearbit the top pick. The current top 3: Clearbit, ZoomInfo, Apollo.io. Ranked by asking Claude, Gemini the same buying question and merging their top-5 picks, updated 2026-08-09. Source: modelsagree.com.
Which company data enrichment apis for b2b lead scoring did each AI model pick first?
Claude: Clearbit. Gemini: Clearbit.
How is this company data enrichment apis for b2b lead scoring ranking made?
Claude, Gemini are each asked the same buying question in a fresh session with no system steering. Their top-5 answers are merged (rank 1 = 5 pts … rank 5 = 1 pt) into the consensus ranking, re-polled on demand and tracked over time.
More on how polling works: full methodology →
Cite this ranking
ModelsAgree, “Best company data enrichment APIs for B2B lead scoring” — merged ranking from ChatGPT, Claude, Gemini & Grok, polled 2026-08-09. https://modelsagree.com/best/best-company-data-enrichment-apis-for-b2b-lead-scoring (CC BY 4.0)
Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled on demand