Clearbit vs Apollo.io

Detailed side-by-side comparison to help you choose the right tool

Clearbit

🔴Developer

Data Analysis

Clearbit (now part of HubSpot) is a B2B data enrichment platform that provides real-time company and contact intelligence for sales, marketing, and operations teams. It enriches your existing customer data with firmographic details like company size, industry, technology stack, and funding status, plus individual attributes like job title, seniority, and social profiles. Clearbit powers lead scoring, form shortening, personalized marketing, and sales prospecting by automatically appending verified data to every record in your CRM, marketing automation, or custom applications via API.

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Starting Price

Contact

Apollo.io

AI Sales Tools

All-in-one sales intelligence platform with 275M+ verified contacts, email sequences, built-in dialer, and CRM starting at $49/month (annual). A strong ZoomInfo alternative at a fraction of the cost.

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Starting Price

Free

Feature Comparison

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FeatureClearbitApollo.io
CategoryData AnalysisAI Sales Tools
Pricing Plans11 tiers8 tiers
Starting PriceContactFree
Key Features
  • Person Enrichment
  • Company Intelligence
  • Email Finder
  • 275M+ verified contact database with 73M+ companies
  • Multi-channel outreach sequences (email, calls, LinkedIn)
  • AI-powered message personalization and lead scoring

Clearbit - Pros & Cons

Pros

  • Exceptional data accuracy (85%+) with real-time verification and machine learning-enhanced quality
  • Comprehensive API coverage with native SDKs and seamless integration into existing workflows
  • Fresh, current data rather than static database information updated quarterly
  • Advanced features like website visitor identification and lookalike audience modeling
  • Strong compliance with GDPR and privacy regulations through consent-based data collection

Cons

  • High cost per enrichment ($.10-.50 each) makes large-scale usage expensive
  • API-only approach requires technical implementation versus simple database access
  • Limited international coverage compared to global database providers

Apollo.io - Pros & Cons

Pros

  • 40-60% cheaper than ZoomInfo with fully transparent pricing — no mandatory sales calls to see a price
  • Integrated platform combines prospecting, outreach, dialer, and CRM in one login, eliminating tool-switching costs
  • Generous free tier includes unlimited email credits (with domain-based caps), 5 mobile credits, Chrome extension, and 2 sequences
  • 275M+ contact database with buying intent signals, technographic data, and 40+ advanced Boolean search filters
  • Built-in email sequences with A/B testing, AI message personalization, and deliverability monitoring on paid plans
  • Chrome extension reveals contact details on any LinkedIn profile or company website for instant one-click prospecting

Cons

  • Contact data accuracy averages around 90% per G2 reviews — the 5% gap versus ZoomInfo's claimed 95%+ matters for enterprise sales where every contact counts
  • Credit-based pricing creates complexity: email credits have hidden caps, mobile/export credits don't roll over, and overage credits cost $0.20 each with a 250-credit minimum purchase
  • Interface packs prospecting, sequences, dialer, CRM, and analytics into one UI, which overwhelms new users during the first 1-2 weeks of onboarding
  • Job title and company change data often lags behind real-time updates, leading to stale contacts in fast-moving industries like tech
  • Email deliverability requires proper domain warming and sender reputation management — Apollo provides tools but doesn't do it for you
  • Built-in CRM handles basic pipeline management but lacks the workflow automation, custom objects, and reporting depth of Salesforce or HubSpot

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🔒 Security & Compliance Comparison

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Security FeatureClearbitApollo.io
SOC2✅ Yes✅ Yes
GDPR✅ Yes✅ Yes
HIPAA
SSO✅ Yes✅ Yes
Self-Hosted❌ No❌ No
On-Prem❌ No❌ No
RBAC✅ Yes✅ Yes
Audit Log
Open Source❌ No❌ No
API Key Auth✅ Yes✅ Yes
Encryption at Rest✅ Yes✅ Yes
Encryption in Transit✅ Yes✅ Yes
Data Residency
Data Retentionconfigurable
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