Comparison

Best B2B Data Enrichment APIs in 2026

We compared the five most-used B2B enrichment APIs on endpoints, pricing, coverage, and developer experience. Here is what we found.

Last updated: April 2026

ProviderFree tierStarting priceAll endpointsMENA coverage
ApiOne✅ 100 credits$49/mo✅ Yes✅ Yes
Apollo.io✅ Limited$49/mo +⚠️ Partial⚠️ Limited
Hunter.io✅ 25/mo$49/mo❌ Email only⚠️ Limited
Clearbit❌ NoneHubSpot req.⚠️ Partial❌ Poor
ZoomInfo❌ None~$15K/yr✅ Yes❌ Poor
ApiOne
Standalone enrichment API with MENA and GCC coverage

Pros

  • ✅ Company, people, email, tech stack and signals behind one key
  • ✅ Live-sourced, with cited sources on every field, including MENA and GCC
  • ✅ 100 free credits, no card required
  • ✅ From $49/month via PayPal, cancel anytime
  • ✅ Fixed JSON schema on every response
  • ✅ Async batch up to 10 companies simultaneously

Cons

  • ⚠️ No Chrome extension (API only)
  • ⚠️ Newer than legacy providers
Pricing: Free → $49 → $149 → $499/monthBest for: Developers, GTM engineers, RevOps teams, and founders enriching their own pipelines.
Apollo.io
Best for all-in-one sales platform

Pros

  • ✅ Large built-in contact and company database
  • ✅ Full sales platform: sequences, dialer, CRM
  • ✅ Good email finding and verification
  • ✅ Self-serve free plan available

Cons

  • ⚠️ API is secondary — platform is primary use case
  • ⚠️ Seat-based pricing adds up quickly
  • ⚠️ Limited MENA/GCC coverage
  • ⚠️ Async batch via CSV upload only
Pricing: Free → $49/month + seat feesBest for: SDR teams who want prospecting, sequences, and enrichment in one platform.
Full comparison: ApiOne vs Apollo.io →
Hunter.io
Best for simple email finding only

Pros

  • ✅ Excellent email finding accuracy
  • ✅ Chrome extension for quick manual lookups
  • ✅ Clean, developer-friendly REST API
  • ✅ 25 free searches per month

Cons

  • ⚠️ Email only — no company or people enrichment
  • ⚠️ No tech stack or signal detection
  • ⚠️ Limited MENA/GCC coverage
  • ⚠️ Need a second tool for company context
Pricing: Free (25/month) → $49/monthBest for: Teams that only need email finding and prefer a simple, single-purpose tool.
Full comparison: ApiOne vs Hunter.io →
Clearbit (now Breeze)
Best for HubSpot-native teams

Pros

  • ✅ Deep HubSpot integration
  • ✅ Strong US and EU company data coverage
  • ✅ Consistent JSON schema

Cons

  • ⚠️ Standalone API deprecated — HubSpot required
  • ⚠️ No email finding or verification
  • ⚠️ No standalone free tier
  • ⚠️ Poor MENA/GCC coverage
Pricing: Requires active HubSpot subscriptionBest for: Teams already on HubSpot who want native enrichment inside their CRM.
Full comparison: ApiOne vs Clearbit (now Breeze) →
ZoomInfo
Best for large enterprise budgets

Pros

  • ✅ Most comprehensive US/EU contact database
  • ✅ Full suite: enrichment, intent data, prospecting
  • ✅ Strong for large enterprise sales teams

Cons

  • ⚠️ Starts at ~$15,000/year — annual contract required
  • ⚠️ Sales call required before access
  • ⚠️ No free tier
  • ⚠️ Poor MENA/GCC coverage
  • ⚠️ Overkill for most startups and scale-ups
Pricing: ~$15,000–$50,000/year (annual contract)Best for: Large enterprises with dedicated data budgets and multi-week procurement processes.
Full comparison: ApiOne vs ZoomInfo →

Start with the #1 pick — free

100 credits, no credit card. Company enrichment, email finding, people data, and signals in one API key.

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