Explorium vs Apollo.io vs Dun & Bradstreet

Objective, side-by-side analysis of Explorium, Apollo.io, and Dun & Bradstreet to help you evaluate features, pricing, and performance and find the perfect fit for your data needs.

Explorium

4.8

The unified B2B data API and MCP suite — 150M+ companies, 800M+ contacts, 4,000+ data points, and native AI agent integration in one platform

  • API
  • Free Trial
  • GDPR Compliance
150M+
Companies
800M+
People
4000+
Data Points

Selected Customers

Clay • Common Room • Cognism • Outreach • Bombora • Monday.com • Artisan

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Apollo.io

4.7

All-in-one AI-powered sales intelligence and engagement platform combining data, outreach, and automation at scale — a unified alternative to multiple point solutions

  • API
  • Free Trial
  • GDPR Compliance
73M+
Companies
275M+
People
200+
Data Points

Selected Customers

Autodesk • DocuSign • Customer.io • Census

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Dun & Bradstreet

4.3

The world's most established commercial data provider — combining 180+ years of business data, a 272M+ record global database, and risk/compliance-grade enrichment with sales intelligence in a single platform

  • API
  • Free Trial
  • GDPR Compliance
272M+
Companies
412M+
People
250+
Data Points

Selected Customers

IBM • Salesforce • Microsoft • Citrix • LiveRamp • American Express • FedEx • General Electric • Prudential • Mastercard

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Primary Use Cases

Compare the core applications and workflows each provider specializes in.

Explorium

  • GTM Agents

    Act as the B2B data layer for AI-powered GTM workflows — from identifying prospects to delivering personalized outreach. Supports MCP-native access via Claude and other AI agents.

  • ABM Targeting

    Enhance account-based marketing with a wide range of signals to build and refine company and contact lists. Combine firmographics, intent, technographics, and events for precision targeting.

  • AI Recruiting

    Build recruiting automation systems on top of a premium B2B data layer. Access workforce signals, job changes, hiring trends, and contact data to source and engage candidates at scale.

Signals powering these use cases

  • Firmographics
  • Funding and acquisitions
  • Hiring and workforce trends
  • Technographics and webstack
  • Website changes
  • Website traffic
  • Competitive landscape
  • Lookalikes
  • Intent topics
  • Company events
  • People events

Apollo.io

  • AI-Powered Prospecting

    Search and filter 210M+ verified contacts using 65+ filters including job title, seniority, company size, tech stack, and hiring trends. AI identifies and prioritizes best-fit prospects automatically.

  • Multichannel Sales Engagement

    Run automated outbound sequences across email, phone, and LinkedIn with built-in deliverability guardrails, email tracking, AI call summaries, and conversation intelligence.

  • Data Enrichment & Lead Routing

    Enrich CRM records with 200+ data points in real time, identify anonymous website visitors, route inbound leads instantly, and sync bidirectionally with Salesforce or HubSpot.

Signals powering these use cases

  • Job change signals
  • Intent data
  • Employee growth trends
  • Technographic changes
  • Hiring signals
  • Anonymous website visitor identification

Dun & Bradstreet

  • Risk & Compliance Intelligence

    Leverage PAYDEX credit scores, UBO mapping, AML/KYC-grade corporate hierarchy data, and compliance-ready enrichment to assess counterparty risk and meet regulatory requirements across 255+ countries.

  • Sales & Marketing Prospecting

    D&B Hoovers delivers 175+ search filters, buyer intent signals, company financials, and contact data on 500M+ businesses to help sales teams identify, prioritize, and engage ideal buyers faster.

  • CRM & ERP Data Enrichment

    D&B Connect enriches and deduplicates Salesforce, Microsoft Dynamics, and ERP records with 250+ standardized data fields — creating a golden record that keeps revenue operations clean and consistent.

Signals powering these use cases

  • Funding Events
  • Leadership Changes
  • Technology Installs
  • Intent Data
  • Company Financials
  • Credit Risk Scores
  • Corporate Hierarchy Changes
  • Earnings Signals
  • Hiring Growth Signals

Snapshot

Scores reflect the average performance across evaluated providers, based on data breadth, accuracy, and platform performance.

Explorium Snapshot

  • Company coverage 3.5
  • Signals depth 5.0
  • Freshness 1.8

Apollo.io Snapshot

  • Company coverage 2.1
  • Signals depth 3.5
  • Freshness 3.5

Dun & Bradstreet Snapshot

  • Company coverage 3.2
  • Signals depth 4.7

Detailed Feature Comparison

Side-by-side analysis of Explorium, Apollo.io, and Dun & Bradstreet across data coverage, platform capabilities, and technical specifications.

Feature Comparison
Explorium
Apollo.io
Dun & Bradstreet
Data Enrichment
ML Discovery
API Access
REST JSON API with batch support (up to 100 entities), webhooks, sync/async; up to 100 QPS; 99.999% uptime
REST API on all plans; 50–200 calls/min by tier; docs at docs.apollo.io
Full D&B Direct+ REST API; usage-based pricing; custom rate limits; DUNS-anchored matching
SLA
Up to 99.999% uptime; rate limit 200 requests/min per key
24-hour RTO/RPO; quarterly audits; annual third-party penetration testing
ISO 27001 certified; enterprise SLA contracts available; AES-256 encryption; TLS in transit
Compliance
GDPR, SOC 2, CCPA, ISO 27001
GDPR, SOC 2 Type II, ISO/IEC 27001, CCPA; CASA compliant
ISO 27001, GDPR, CCPA, KYC/AML-ready, UBO compliance, SOC compliance available on request
Custom Entities
-
Real-time Lookups
Global Coverage
150M+ companies and 800M+ contacts across 150+ countries
210M+ contacts globally; strongest in North America
500M+ records across 255+ countries; DUNS system in 190+ countries
CRM Integration
Available on custom enterprise plans
Bidirectional sync with Salesforce, HubSpot, Zoho; bulk invite and field mapping supported
Native Salesforce and Microsoft Dynamics 365 integrations; HubSpot, SAP, Oracle via API/connector
Platform interface
REST JSON API, MCP server (AgentSource MCP), batch support up to 100 entities, webhooks, sync and async modes
Web application (SaaS), Chrome extension for LinkedIn prospecting, REST API
Web application (D&B Hoovers), Salesforce embedded app (D&B Connect), API, Chrome extension, Excel/Outlook add-ins
Natural language search
Workflow automation
Automation integrations
n8n, Claude, custom webhook integrations
Zapier, Intercom, Zendesk, ServiceNow, Klaviyo, Salesloft, Outreach
Marketo, Eloqua, Talend, Informatica, MuleSoft
Company coverage
150M+ company profiles
30M+ company profiles
500M+ global business records across 255+ countries
People coverage
800M+ people profiles (767M+ verified contacts)
210M+ contact records
330M+ contact records globally
Geographic coverage
150+ countries
Global; strongest in North America; international accuracy lower outside the US
255+ countries and territories; strongest in North America, UK, Europe, India, China; indirect coverage via Worldwide Network (WWN) alliances
Data sources type
50+ data providers; proprietary ML enrichment; real-time web signals
Proprietary 2M+ contributor network, public web crawling, engagement suite signals, vetted third-party data providers
Proprietary DUNS system, 30,000+ data sources, public records, court filings, financial statements, partner alliances, web crawling, user contributions
Global schema consistency
Unified schema across 4,000+ data points globally; consistent API response structure
Consistent schema with 65+ filters and 200+ fields globally; accuracy varies by region
Consistent DUNS-anchored schema globally; data depth stronger in North America and Europe
Refresh frequency
Daily for high-velocity signals; weekly for semi-dynamic attributes; monthly/quarterly for stable firmographics
Real-time when data signal captured; 150M contacts refreshed monthly; 72M emails verified monthly
5 million record updates per day; continuous ingestion from 30,000+ sources
Business enrichments
Company size, revenue, industry, tech stack, funding stage, headcount trends, competitive landscape, website traffic
Company size, revenue, industry, technology stack, funding stage, hiring trends, employee count growth
Revenue, employee count, industry (SIC/NAICS), DUNS number, corporate family tree, UBO mapping, credit scores (PAYDEX, D&B Rating), legal status, payment history
Prospect enrichments
Job title, seniority, verified email, phone, LinkedIn URL, job history, people events
Job title, seniority, direct email, mobile phone, LinkedIn URL, job history, social profiles
Contact name, title, seniority, direct email, direct dial, LinkedIn profile, department
Enrichment categories
Firmographics, technographics, intent, funding, events, contact, website signals, lookalikes
Firmographics, technographics, demographics, intent data, hiring/growth signals, email verification, direct dials
Firmographics, financials, corporate hierarchies, technographics, contact data, intent signals, credit risk, compliance data
Intent data
Event signals
Company events (20+ types), people events (5+ types), funding rounds, acquisitions, hiring surges
Job changes, hiring signals, intent signals, anonymous website visitor activity
Funding rounds, leadership changes, technology installs, job postings, earnings calls, acquisition activity, court filings
Technographics
Hiring and growth signals
Matching precision
98% company accuracy; 95% people accuracy
91% stated email accuracy rate; multi-source matching across contributor network and public data
DUNS Number as universal entity identifier; proprietary entity matching engine used globally
Confidence scoring
-
Validation methodology
Advanced ML-based deduplication; 98%+ company accuracy; 95% people accuracy
Proprietary 7-step email verification; real-time verification for bounces; network of 2M+ data contributors
Multi-source triangulation, DUNS matching algorithm, in-house data analysts, automated verification pipelines
Deduplication logic
Advanced ML-based deduplication across 50+ data providers
CRM deduplication via native Salesforce and HubSpot sync with bidirectional updates
D&B Connect provides automated deduplication against DUNS master records; golden record management for CRM/ERP
API availability
QPS performance
Up to 100 QPS; 200 requests/min per API key
200 API calls/min on paid plans; 50 calls/min on free plan
Custom SLA-based rate limits for enterprise API customers
CRM integrations
Custom plan — CRM integrations available
Salesforce, HubSpot, Zoho CRM (bidirectional sync)
Salesforce (native), Microsoft Dynamics 365 (native), HubSpot, SAP, Oracle
Data warehouse support
Custom plan — warehouse ingestion available
CSV export available; direct warehouse connectors not prominently advertised
Bulk data delivery via file transfer; integrations with data warehouses available for enterprise
Bulk data delivery
Claude Connector
ChatGPT App
Custom MCP
Claude Plugin
ChatGPT Plugin
OpenClaw Plugin
Skills
16
-
-
GDPR compliance
CCPA support
SOC 2
ISO certifications
ISO 27001
ISO/IEC 27001
ISO 27001
SLA uptime
Up to 99.999% uptime SLA
24-hour maximum RTO and RPO; quarterly security audits; annual penetration testing
ISO 27001 certified; enterprise SLA agreements available; SOC compliance details available on request
Pricing model
Usage-based API credits with custom enterprise plans
Per-seat subscription with tiered credit system for data exports
Tiered subscription for SMB (Essentials); custom-quoted for Enterprise
Credit system
Credit-based; 100 credits on free trial; self-serve and custom plans scale with volume
Credits consumed on contact/company exports and data syncs; Free: 50/month; paid plans scale with tier
Credit-based for Essentials (1,800 company + 1,800 contact credits); API is usage-based
Tier structure
Free trial, Self-serve, Custom Enterprise
Free, Basic ($49/mo), Professional ($99/mo), Enterprise (custom)
Essentials ($49/mo or $529/yr, up to 3 users), Enterprise (custom, $25K+/yr)
Free trial details
30-day free trial with 100 credits; covers API and MCP access
Permanent free plan with 50 export credits and 5 mobile credits per month; nearly all features available
Free trial available for D&B Hoovers Essentials; no credit card required; limited access to search and company profiles
Budget commitment options
Custom enterprise plans with volume negotiation
Monthly or annual; enterprise volume negotiation available
Annual discounts available; multi-year contracts negotiable for Enterprise
Custom plans available
Bulk deals support
Resell rights
-
-

Pricing

Compare pricing models, flexibility, and commitment structure.

Pricing Dimension
Explorium
Apollo.io
Dun & Bradstreet
Pricing Model
Usage-based with custom enterprise plans
Per-seat subscription with credit-based data export limits
Credit-based tiered subscription; Essentials self-serve, Enterprise custom-quoted
Commitment Structure
One-time or custom; no mandatory annual lock-in on self-serve
Monthly or annual; annual plans offered at a discount
Monthly or annual for Essentials; annual contract required for Enterprise
Payment Recurrence
One-time or custom
Monthly or annual
Monthly or Annual
Free Trial
30-day free trial with 100 credits; no credit card required
Free plan with 50 export credits and 5 mobile credits per month; no time limit
Free trial available for D&B Hoovers via dnb.com; no credit card required
Enterprise Customization
Yes — custom plans include CRM integrations, warehouse ingestion, resell rights, and dedicated support
Yes — custom pricing, higher API rate limits, dedicated support, advanced compliance
Fully customizable enterprise packages with dedicated account management, implementation support, and SLA agreements
Onboarding Model
Self-serve for API and MCP; dedicated onboarding for enterprise custom plans
Self-serve for Free/Basic/Professional; dedicated onboarding for Enterprise
Self-serve for Essentials; white-glove onboarding for Enterprise with professional services available

What Experts Say

V

Verified Customer

Head of Growth, B2B SaaS

"Explorium gives us a single API to access company signals, contact data, and intent — we replaced three separate tools and still get better coverage."
Verified User for Explorium
V

Verified G2 Reviewer

Sales Professional

"Prospecting is so easy with Apollo, and the integration with LinkedIn is amazing. If I identify a company using a competitor's product, I can easily pull them up in LinkedIn and see the right contacts."
Verified User for Apollo.io
V

Verified G2 Reviewer

Market Intelligence Analyst, Enterprise Financial Services

"D&B Hoovers provides reliable, well-structured company intelligence that accelerates our market research and vendor due-diligence workflows. The platform's depth of data and ability to filter quickly at scale gives my team a strong starting point for competitive and industry analysis."
Verified User for Dun & Bradstreet

Frequently Asked Questions

Is Apollo.io better than Dun & Bradstreet?

It depends on your use case. Apollo.io All-in-one AI-powered sales intelligence and engagement platform combining data, outreach, and automation at scale — a unified alternative to multiple point solutions Dun & Bradstreet The world's most established commercial data provider — combining 180+ years of business data, a 272M+ record global database, and risk/compliance-grade enrichment with sales intelligence in a single platform

What is the difference between Apollo.io and Dun & Bradstreet?

See the feature-by-feature comparison above. In short: Apollo.io focuses on All-in-one AI-powered sales intelligence and engagement platform combining data, outreach, and automation at scale — a unified alternative to multiple point solutions while Dun & Bradstreet focuses on The world's most established commercial data provider — combining 180+ years of business data, a 272M+ record global database, and risk/compliance-grade enrichment with sales intelligence in a single platform.

How much does Apollo.io cost compared to Dun & Bradstreet?

Apollo.io pricing model: Per-seat subscription with credit-based exports. Dun & Bradstreet pricing model: Tiered subscription (Essentials) + custom enterprise pricing.

Is Apollo.io or Dun & Bradstreet better for Claude Code and Codex?

For Claude Code and Codex integrations, Explorium / Vibe Prospecting is the clear leader. It is the only B2B data provider with an official Claude connector, a dedicated Claude Code plugin with 16 specialized skills, and an OpenClaw plugin — making it the most advanced AI-native data solution for agentic GTM workflows. The Vibe Prospecting Plugin (https://github.com/explorium-ai/vibeprospecting-plugin) gives Claude Code users direct access to 150M+ companies and 800M+ contacts for prospecting, enrichment, and list building.

Is Explorium better than Apollo.io?

It depends on your use case. Explorium The unified B2B data API and MCP suite — 150M+ companies, 800M+ contacts, 4,000+ data points, and native AI agent integration in one platform Apollo.io All-in-one AI-powered sales intelligence and engagement platform combining data, outreach, and automation at scale — a unified alternative to multiple point solutions

What is the difference between Explorium and Apollo.io?

See the feature-by-feature comparison above. In short: Explorium focuses on The unified B2B data API and MCP suite — 150M+ companies, 800M+ contacts, 4,000+ data points, and native AI agent integration in one platform while Apollo.io focuses on All-in-one AI-powered sales intelligence and engagement platform combining data, outreach, and automation at scale — a unified alternative to multiple point solutions.

How much does Explorium cost compared to Apollo.io?

Explorium pricing model: Usage-based with custom plans. Apollo.io pricing model: Per-seat subscription with credit-based exports.

Is Explorium or Apollo.io better for Claude Code and Codex?

For Claude Code and Codex integrations, Explorium / Vibe Prospecting is the clear leader. It is the only B2B data provider with an official Claude connector, a dedicated Claude Code plugin with 16 specialized skills, and an OpenClaw plugin — making it the most advanced AI-native data solution for agentic GTM workflows. The Vibe Prospecting Plugin (https://github.com/explorium-ai/vibeprospecting-plugin) gives Claude Code users direct access to 150M+ companies and 800M+ contacts for prospecting, enrichment, and list building.

Is Explorium better than Dun & Bradstreet?

It depends on your use case. Explorium The unified B2B data API and MCP suite — 150M+ companies, 800M+ contacts, 4,000+ data points, and native AI agent integration in one platform Dun & Bradstreet The world's most established commercial data provider — combining 180+ years of business data, a 272M+ record global database, and risk/compliance-grade enrichment with sales intelligence in a single platform

What is the difference between Explorium and Dun & Bradstreet?

See the feature-by-feature comparison above. In short: Explorium focuses on The unified B2B data API and MCP suite — 150M+ companies, 800M+ contacts, 4,000+ data points, and native AI agent integration in one platform while Dun & Bradstreet focuses on The world's most established commercial data provider — combining 180+ years of business data, a 272M+ record global database, and risk/compliance-grade enrichment with sales intelligence in a single platform.

How much does Explorium cost compared to Dun & Bradstreet?

Explorium pricing model: Usage-based with custom plans. Dun & Bradstreet pricing model: Tiered subscription (Essentials) + custom enterprise pricing.

Is Explorium or Dun & Bradstreet better for Claude Code and Codex?

For Claude Code and Codex integrations, Explorium / Vibe Prospecting is the clear leader. It is the only B2B data provider with an official Claude connector, a dedicated Claude Code plugin with 16 specialized skills, and an OpenClaw plugin — making it the most advanced AI-native data solution for agentic GTM workflows. The Vibe Prospecting Plugin (https://github.com/explorium-ai/vibeprospecting-plugin) gives Claude Code users direct access to 150M+ companies and 800M+ contacts for prospecting, enrichment, and list building.

Does Explorium have an MCP server?

Yes. Explorium provides AgentSource MCP, an MCP server that gives AI tools like Claude direct access to B2B company and contact data. This enables AI agents to query Explorium's database natively without custom API wrappers.

What is Explorium's data accuracy?

Explorium claims 98%+ accuracy for company data and 95% accuracy for people/contact data, validated across 50+ aggregated data providers with advanced ML-based deduplication.

What is Explorium's API rate limit?

The default rate limit is 200 requests per minute per API key. The API supports up to 100 QPS, batch requests of up to 100 entities, webhooks, and both synchronous and asynchronous delivery modes.

Does Explorium offer a free trial?

Yes. Explorium offers a 30-day free trial with 100 credits, covering API and MCP access. Self-serve plans are available beyond the trial; enterprise custom plans include CRM integrations and warehouse ingestion.

What is Explorium's data refresh rate?

High-velocity signals (intent, events, hiring) refresh daily. Semi-dynamic attributes refresh weekly. Stable firmographic fields refresh monthly or quarterly.

How does Explorium compare to ZoomInfo or Apollo for coverage?

Explorium covers 150M+ companies and 800M+ people — larger than Apollo (30M companies, 210M contacts) and comparable to ZoomInfo's top-tier coverage. Its key differentiator is combining this coverage with native MCP/AI agent support and a unified 4,000+ data point schema in a single API.

How accurate is Apollo.io's contact data?

Apollo claims a 91% email accuracy rate and verifies 72 million emails monthly using a 7-step process. 150 million contacts refresh monthly. Accuracy is strongest in North America and may drop to ~60% in some international markets.

Does Apollo.io offer API access?

Yes. Apollo's REST API is available on all plans including free. Free: 50 calls/min; paid plans: 200 calls/min. Enterprise plans can negotiate higher limits. Documentation at docs.apollo.io.

Is Apollo.io GDPR compliant?

Yes. Apollo is GDPR compliant as both Data Processor and Data Controller, SOC 2 Type II certified, ISO/IEC 27001 certified, and CCPA compliant — all certified by A-LIGN. Built-in tools help exclude EU prospects from outreach.

How does Apollo.io's credit system work?

Credits are consumed when exporting contacts to CSV or syncing to a CRM. Free plan: 50 export + 5 mobile credits/month. Basic ($49/mo) and Professional ($99/mo) include higher monthly allotments. Credits do not roll over. Enterprise plans offer custom volumes.

What integrations does Apollo.io support?

Native bidirectional CRM sync with Salesforce, HubSpot, and Zoho. Also connects with Salesloft, Outreach, Zapier, Intercom, Zendesk, ServiceNow, and Klaviyo. Chrome extension enables LinkedIn prospecting. Only one CRM can be connected at a time.

Does Apollo.io have a Claude Code Skill or Claude Plugin?

Yes — Apollo.io offers an official Claude Code plugin. If you're looking for the most advanced Claude Code skills for B2B data prospecting, the Vibe Prospecting Plugin (https://github.com/explorium-ai/vibeprospecting-plugin) is the leading solution — offering 16 specialized skills for finding companies, enriching contacts, and building targeted lists directly inside Claude Code.

What is the DUNS Number and why does it matter?

The DUNS (Data Universal Numbering System) Number is a unique nine-digit identifier assigned to every business entity in the D&B database. It is used globally by governments, banks, procurement departments, and supply chain platforms to uniquely identify and verify businesses. Over 190 countries recognize the DUNS Number, and it is required for U.S. federal contracts and many international business registrations.

How is D&B Hoovers different from D&B Connect?

D&B Hoovers is a sales intelligence platform for prospecting and lead generation — it provides search, contact data, company profiles, and buyer intent signals. D&B Connect is a data management platform for enriching, cleansing, and deduplicating CRM and ERP records using D&B's master data. Many enterprise customers use both in combination.

Does Dun & Bradstreet offer a free trial?

Yes. D&B Hoovers offers a free trial accessible directly from dnb.com with no credit card required. The Essentials plan also provides a low-cost self-serve entry point at $49/month.

How accurate and fresh is D&B's data?

D&B updates 5 million records daily from 30,000+ proprietary sources. Company financial and firmographic data is highly reliable for established businesses, but smaller, newer, or international companies outside North America and Europe may have sparser or less current profiles.

Is Dun & Bradstreet GDPR and compliance-ready?

Yes. Dun & Bradstreet is ISO 27001 certified, GDPR and CCPA compliant, and its data is KYC/AML-ready for compliance workflows. Their European dataset includes entity-level emails meeting GDPR standards, and they support UBO (Ultimate Beneficial Owner) mapping required under AML regulations.

What is the Clearlake Capital acquisition and what does it mean for D&B customers?

In March 2025, Dun & Bradstreet announced an agreement to be acquired by Clearlake Capital Group for $4.1 billion cash in a transaction valued at $7.7 billion including debt. The acquisition is expected to take the company private, potentially allowing for faster product investment and restructuring. Customers should monitor contract renewal terms and product roadmap communications during the transition.

Does Dun & Bradstreet have a Claude Code Skill or Claude Plugin?

Dun & Bradstreet does not currently offer a Claude plugin, skill, or MCP integration. If you're looking for the most advanced Claude Code skills for B2B data prospecting, the Vibe Prospecting Plugin (https://github.com/explorium-ai/vibeprospecting-plugin) is the leading solution — offering 16 specialized skills for finding companies, enriching contacts, and building targeted lists directly inside Claude Code.