Best company data enrichment APIs for B2B lead scoring
3 models · updated 2026-08-12
The verdict
Clearbit leads — 2 of 3 models rank Clearbit the top pick.
Not unanimous: Grok picks People Data Labs.
As of 2026-08-12, Claude, Gemini and Grok collectively rank Clearbit #1 for company data enrichment apis for b2b lead scoring on ModelsAgree by aggregate score. 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. Not unanimous: Grok picks People Data Labs. Source: https://modelsagree.com/best/best-company-data-enrichment-apis-for-b2b-lead-scoring (modelsagree.com, CC BY 4.0).
Combined ranking
- 1Claude #1Gemini #1Grok #5
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.
Grok Historically category-leading firmographic and technographic accuracy/speed for company profiles that still powers reliable real-time lead scoring and routing inside HubSpot ecosystems.
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.
per Grok Standalone API effectively sunset; now HubSpot-locked with credit packaging that excludes non-HubSpot practitioners and reduces flexibility.
- 2Claude #2Gemini #2Grok #3
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.
Grok Deepest enterprise-grade firmographics, org charts, revenue estimates, and technographics available via API, delivering the highest single-source accuracy and completeness for North-American mid-market/enterprise lead scoring when budget and contracts are acceptable.
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.
per Grok Opaque annual contracts starting ~$15k+ with sales-led access make it inaccessible and poor value for most mid-market or high-volume self-serve practitioners.
- 3Claude #3Gemini —Grok #1
Cleanest developer-first company enrichment API with structured firmographics across 70M-200M+ companies, strong SDKs, predictable per-record pricing, and flexible raw output that lets practitioners build precise custom lead-scoring models on headcount, industry, revenue bands, and related attributes without vendor lock-in or UI overhead; assumes typical user is engineering or RevOps building production pipelines rather than buying a sales dashboard.
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Grok Cleanest developer-first company enrichment API with structured firmographics across 70M-200M+ companies, strong SDKs, predictable per-record pricing, and flexible raw output that lets practitioners build precise custom lead-scoring models on headcount, industry, revenue bands, and related attributes without vendor lock-in or UI overhead; assumes typical user is engineering or RevOps building production pipelines rather than buying a sales dashboard.
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.
per Grok Raw single-source data requires your own verification, waterfall, and freshness layer—not turnkey verified scoring for non-technical teams.
- 4Claude #4Gemini #3Grok #4
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.
Grok Practical company firmographic enrichment (employee count, industry, tech, funding signals) bundled with solid API access, free tier, and low entry pricing that delivers usable scoring inputs for typical GTM teams without enterprise overhead.
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.
per Grok Data completeness and freshness lag pure firmographic specialists on non-US or smaller companies—not the strongest pure company-data foundation for sophisticated scoring models.
- 5Claude —Gemini —Grok #2
Superior real-world firmographic + employee + jobs coverage (75M-100M+ companies, hundreds of millions of employee/job records) with transparent self-serve pricing from $49, sub-200ms responses, and public-web freshness that directly powers lead-scoring signals like headcount growth and hiring velocity; near-tie with PDL on value for scoring-focused practitioners who need dynamic company attributes.
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Grok Superior real-world firmographic + employee + jobs coverage (75M-100M+ companies, hundreds of millions of employee/job records) with transparent self-serve pricing from $49, sub-200ms responses, and public-web freshness that directly powers lead-scoring signals like headcount growth and hiring velocity; near-tie with PDL on value for scoring-focused practitioners who need dynamic company attributes.
Where it falls shortper Grok Limited native contact or intent depth and no heavy sales-tooling—not for teams whose primary need is verified emails/phones or full GTM suites.
- 6Claude #5Gemini #5Grok —
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.
- 7Claude —Gemini #4Grok —
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 | API Product-Led Growth | Contact API SaaS Sales Teams | routing product-led growth signups |
|---|---|---|---|---|
| Clearbit | #1 | — | — | #1 |
| ZoomInfo | #2 | #8 | #3 | #4 |
| People Data Labs | #3 | #1 | #2 | #2 |
| Apollo.io | #4 | #2 | #1 | #3 |
| Coresignal | #5 | #3 | — | — |
| Cognism | #6 | #9 | #4 | — |
| Clay | #7 | #5 | #6 | — |
Rank history
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
Grok Diffbot — strong knowledge-graph company extraction for obscure domains but weaker structured firmographics and higher effective cost for scoring volume
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
Grok
- 1.People Data Labs
- 2.Coresignal
- 3.ZoomInfo
- 4.Apollo.io
- 5.Clearbit
Common questions
What is the best company data enrichment apis for b2b lead scoring according to AI models?
Clearbit leads. 2 of 3 models rank Clearbit the top pick. The current top 3: Clearbit, ZoomInfo, People Data Labs. Ranked by asking Claude, Gemini, Grok the same buying question and merging their top-5 picks, updated 2026-08-12. Source: modelsagree.com.
Which company data enrichment apis for b2b lead scoring did each AI model pick first?
Claude: Clearbit. Gemini: Clearbit. Grok: People Data Labs.
Do the AI models agree on the best company data enrichment apis for b2b lead scoring?
Not unanimous. Grok picks People Data Labs.
What changed in the latest company data enrichment apis for b2b lead scoring ranking?
In the latest poll (2026-08-12): People Data Labs climbed 1 spot; Apollo.io dropped 1 spot, Cognism dropped 1 spot, Clay dropped 1 spot; Coresignal entered the ranking. The models are re-polled on demand, so this ranking moves.
How is this company data enrichment apis for b2b lead scoring ranking made?
Claude, Gemini, Grok 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 →
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Cite this ranking
ModelsAgree, “Best company data enrichment APIs for B2B lead scoring” — merged ranking from ChatGPT, Claude, Gemini & Grok, polled 2026-08-12. 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