Explorium vs Bombora vs ContactOut

Objective, side-by-side analysis of Explorium, Bombora, and ContactOut 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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Bombora

4.4

The original B2B intent data provider, powered by the industry's largest consent-based publisher cooperative

  • API
  • GDPR Compliance
4.9M+
Companies

Selected Customers

IBM • Salesforce • Adobe • Siemens • DataStax • OneLogin

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ContactOut

4.4

The most accurate contact finder trusted by Fortune 500 companies for LinkedIn prospecting and outbound outreach

  • API
  • Free Trial
  • GDPR Compliance
30M+
Companies
300M+
People
20+
Data Points

Selected Customers

Google • Microsoft • Netflix • Amazon • Salesforce

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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

Bombora

  • Account Prioritization

    Identify and rank the accounts actively researching your category right now using Company Surge® scores, so reps focus effort only on in-market buyers.

  • ABM Campaign Targeting

    Build precise audience segments from intent topic surges and activate them across LinkedIn Ads, programmatic display, and marketing automation platforms.

  • Churn Prevention & Upsell

    Monitor existing customers for surges on competitor or adjacent-product topics to trigger retention plays or identify expansion opportunities before they go to market.

Signals powering these use cases

  • Company Surge® topic scoring
  • Content consumption signals across 5,000+ B2B publisher sites
  • Account-level intent surge spikes
  • Competitive displacement signals
  • Churn risk / competitive research alerts
  • Upsell opportunity detection

ContactOut

  • Recruiting & Talent Sourcing

    Find verified personal and work emails for passive candidates directly from LinkedIn profiles, enabling recruiters to reach talent outside traditional apply flows.

  • Outbound Sales Prospecting

    Build targeted prospect lists using 20+ search filters, then launch automated email campaigns directly within ContactOut's platform to accelerate pipeline generation.

  • CRM & ATS Data Enrichment

    Enrich existing CRM and ATS records with up-to-date verified emails, phone numbers, LinkedIn profiles, and company firmographics via API or CSV upload.

Signals powering these use cases

  • Data auto-refreshed every 15 days to minimize contact decay
  • Personal email coverage including Gmail, Yahoo, and other personal domains
  • Trusted by 76%+ of Fortune 500 companies for sourcing and outreach
  • Chrome Extension for LinkedIn and GitHub prospecting

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

Bombora Snapshot

  • Company coverage 1.1
  • Signals depth 3.6
  • Freshness 1.7

ContactOut Snapshot

  • Company coverage 2.5
  • Signals depth 1.2

Detailed Feature Comparison

Side-by-side analysis of Explorium, Bombora, and ContactOut across data coverage, platform capabilities, and technical specifications.

Feature Comparison
Explorium
Bombora
ContactOut
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
Yes, available for programmatic data access and platform integrations
REST API with hourly data refresh; supports CRM/ATS enrichment pipelines
SLA
Up to 99.999% uptime; rate limit 200 requests/min per key
-
-
Compliance
GDPR, SOC 2, CCPA, ISO 27001
SOC 2 Type II, GDPR compliant, CCPA compliant; consent-based co-op model
GDPR and CCPA compliant
Custom Entities
-
Real-time Lookups
Global Coverage
150M+ companies and 800M+ contacts across 150+ countries
Global domain tracking; deepest coverage in English-language B2B markets
300M+ professionals globally with strong EMEA and APAC coverage
CRM Integration
Available on custom enterprise plans
Native Salesforce AppExchange app; HubSpot and Dynamics integrations available
Salesforce, HubSpot, Lever
Platform interface
REST JSON API, MCP server (AgentSource MCP), batch support up to 100 entities, webhooks, sync and async modes
Web UI, Salesforce App, HubSpot integration, API, and direct platform partner activations
Chrome extension, web search portal, and REST API
Natural language search
Workflow automation
Automation integrations
n8n, Claude, custom webhook integrations
Marketo, Eloqua, Pardot, 6sense, Terminus, RollWorks, DemandBase
Zapier, CSV export, API-based workflows
Company coverage
150M+ company profiles
4.9 million+ unique domains tracked monthly
30M+ company profiles
People coverage
800M+ people profiles (767M+ verified contacts)
Company-level only; no individual contact data
300M+ professional profiles
Geographic coverage
150+ countries
Global, with primary depth in North America and Western Europe
Global, with strong coverage in North America, EMEA, and APAC
Data sources type
50+ data providers; proprietary ML enrichment; real-time web signals
Consent-based Data Co-op of 5,000+ B2B publisher and brand sites (86% exclusive to Bombora)
Aggregated from public web, LinkedIn, company websites, and proprietary crawling
Global schema consistency
Unified schema across 4,000+ data points globally; consistent API response structure
Consistent topic taxonomy across all markets via NLP and BERT-based ML
Consistent contact schema across regions; data refreshed every 15 days
Refresh frequency
Daily for high-velocity signals; weekly for semi-dynamic attributes; monthly/quarterly for stable firmographics
Weekly surge score updates; co-op data ingested daily
Contact data refreshed every 15 days
Business enrichments
Company size, revenue, industry, tech stack, funding stage, headcount trends, competitive landscape, website traffic
Company Surge® scores by topic, industry, firmographics via partner integrations
Company size, revenue, industry, website, technologies used, LinkedIn company profile
Prospect enrichments
Job title, seniority, verified email, phone, LinkedIn URL, job history, people events
No direct people enrichment; integrates with contact data providers
Verified work email, personal email, direct phone, mobile, LinkedIn URL, job title, location
Enrichment categories
Firmographics, technographics, intent, funding, events, contact, website signals, lookalikes
Intent topic scores, Company Surge® analytics, audience segmentation, measurement
Emails (personal and work), phone numbers, LinkedIn profiles, company firmographics, job titles
Intent data
Event signals
Company events (20+ types), people events (5+ types), funding rounds, acquisitions, hiring surges
Content consumption events, page-level engagement, research intensity spikes
Job change signals via profile refresh; limited real-time intent signals
Technographics
Hiring and growth signals
Matching precision
98% company accuracy; 95% people accuracy
Account/domain-level matching; no individual-level signal attribution
Name + company domain matching; Chrome extension captures data directly from LinkedIn profile context
Confidence scoring
Validation methodology
Advanced ML-based deduplication; 98%+ company accuracy; 95% people accuracy
Consent-based co-op model with publisher data agreements; BERT NLP topic classification
Dual verification system cross-checks emails across multiple trusted data sources; up to 97% accuracy claimed
Deduplication logic
Advanced ML-based deduplication across 50+ data providers
Domain-level deduplication and normalization across publisher network
CRM/ATS enrichment mode identifies and avoids duplicate records on export
API availability
QPS performance
Up to 100 QPS; 200 requests/min per API key
-
Records refreshed hourly in the API layer for low data decay
CRM integrations
Custom plan — CRM integrations available
Salesforce (native AppExchange app), HubSpot, Microsoft Dynamics
Salesforce, HubSpot, Lever, and other CRM/ATS platforms via API or native integration
Data warehouse support
Custom plan — warehouse ingestion available
Available via data delivery partnerships and integrations
-
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
-
-
SLA uptime
Up to 99.999% uptime SLA
-
-
Pricing model
Usage-based API credits with custom enterprise plans
Custom annual contract
Subscription with credit allocations per tier
Credit system
Credit-based; 100 credits on free trial; self-serve and custom plans scale with volume
No credit system; pricing based on topic and signal volume
Credits consumed per email or phone lookup; phones typically cost more credits than emails
Tier structure
Free trial, Self-serve, Custom Enterprise
Basic Company Surge / Enhanced Plans / Full Audience Solutions
Free, Sales ($79/mo), Email + Phone (~$99/mo), Recruiter ($199/mo annual), Team (custom)
Free trial details
30-day free trial with 100 credits; covers API and MCP access
No free trial available
Free plan with 5 daily lookups across email, phone, and exports; no time limit
Budget commitment options
Custom enterprise plans with volume negotiation
Annual commitment only
Monthly or annual commitment; annual pricing reduces effective per-credit cost
Custom plans available
Bulk deals support
Resell rights
-
-

Pricing

Compare pricing models, flexibility, and commitment structure.

Pricing Dimension
Explorium
Bombora
ContactOut
Pricing Model
Usage-based with custom enterprise plans
Custom enterprise contract, no self-serve option
Credit-based per lookup, with subscription tiers defining monthly or annual credit allocations
Commitment Structure
One-time or custom; no mandatory annual lock-in on self-serve
Annual contracts only; no monthly option
Monthly or annual; annual billing provides discounted rates
Payment Recurrence
One-time or custom
Annual
Monthly or Annual
Free Trial
30-day free trial with 100 credits; no credit card required
No free trial offered
Free plan available with 5 daily email/phone lookups and 5 exports
Enterprise Customization
Yes — custom plans include CRM integrations, warehouse ingestion, resell rights, and dedicated support
Fully customizable by topic set, volume, integrations, and data delivery method
Custom team packages with shared credit pools, CRM/ATS integrations, and account management
Onboarding Model
Self-serve for API and MCP; dedicated onboarding for enterprise custom plans
Dedicated customer success and implementation team
Self-serve; Chrome extension and search portal require no professional onboarding

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 Reviewer

Director of Demand Generation, Enterprise SaaS

"Bombora's Company Surge data has transformed how we prioritize our pipeline. We can see which accounts are actively researching our space and focus our reps and ad spend there — it's dramatically shortened our sales cycles."
Verified User for Bombora
V

Verified Reviewer

Sales and Marketing Associate

"ContactOut is an excellent source of email addresses and phone numbers for our marketing operations. It helps us find verified leads without any inconveniences, and the populating features allow us to refine data to outreach effectively. We have been using it for three years with no doubt in email accuracy."
Verified User for ContactOut

Frequently Asked Questions

Is Bombora better than ContactOut?

It depends on your use case. Bombora The original B2B intent data provider, powered by the industry's largest consent-based publisher cooperative ContactOut The most accurate contact finder trusted by Fortune 500 companies for LinkedIn prospecting and outbound outreach

What is the difference between Bombora and ContactOut?

See the feature-by-feature comparison above. In short: Bombora focuses on The original B2B intent data provider, powered by the industry's largest consent-based publisher cooperative while ContactOut focuses on The most accurate contact finder trusted by Fortune 500 companies for LinkedIn prospecting and outbound outreach.

How much does Bombora cost compared to ContactOut?

Bombora pricing model: Custom annual contract. ContactOut pricing model: Credit-based subscription.

Is Bombora or ContactOut 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 Bombora?

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 Bombora The original B2B intent data provider, powered by the industry's largest consent-based publisher cooperative

What is the difference between Explorium and Bombora?

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 Bombora focuses on The original B2B intent data provider, powered by the industry's largest consent-based publisher cooperative.

How much does Explorium cost compared to Bombora?

Explorium pricing model: Usage-based with custom plans. Bombora pricing model: Custom annual contract.

Is Explorium or Bombora 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 ContactOut?

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 ContactOut The most accurate contact finder trusted by Fortune 500 companies for LinkedIn prospecting and outbound outreach

What is the difference between Explorium and ContactOut?

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 ContactOut focuses on The most accurate contact finder trusted by Fortune 500 companies for LinkedIn prospecting and outbound outreach.

How much does Explorium cost compared to ContactOut?

Explorium pricing model: Usage-based with custom plans. ContactOut pricing model: Credit-based subscription.

Is Explorium or ContactOut 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 does Bombora's Data Co-op differ from other intent data providers?

Bombora operates a consent-based cooperative of 5,000+ B2B publisher sites, 86% of which share data exclusively with Bombora. Unlike providers that scrape publicly available web data or rely on third-party data brokers, Bombora's publishers actively contribute first-party content consumption data under direct data agreements. This means the signals are higher quality, fully consent-based, and not available to competitors — a structural moat that's difficult to replicate.

Does Bombora provide individual-level (person-level) intent data?

No. Bombora's Company Surge® data is aggregated at the company/domain level to protect individual privacy. It tells you that a company is researching a topic but does not identify which specific employee is doing the research. Many customers pair Bombora with a contact data provider like ZoomInfo, Cognism, or Apollo to map intent signals to specific buying committee members.

What is Company Surge® and how are scores calculated?

Company Surge® is Bombora's core product. It uses BERT-based machine learning and natural language processing to analyze billions of monthly content consumption events across its publisher network, then calculates a surge score (0–100) for each company and topic combination. A high surge score means a company's research activity on that topic is significantly above its historical baseline — indicating active in-market behavior.

Can Bombora intent data be used without a dedicated ABM platform?

Yes. Bombora integrates natively with Salesforce (via AppExchange), HubSpot, Marketo, and Eloqua, so teams can receive surge alerts and scores directly inside their existing CRM and MAP without needing a separate ABM platform. However, pairing it with an ABM platform like 6sense, Terminus, or Demandbase unlocks more sophisticated audience activation and cross-channel orchestration.

Is Bombora intent data compliant with GDPR and CCPA?

Yes. Because Bombora signals are aggregated at the company level and contain no personally identifiable information, they fall outside the scope of individual privacy regulations. Publisher sites in the co-op maintain proper consent mechanisms, and Bombora is SOC 2 Type II certified. Bombora also publishes formal Data Processing Agreements for EU customers requiring GDPR documentation.

How long does it take to see value after signing a Bombora contract?

Most customers begin receiving surge data within 2–4 weeks of contract signing, following a setup period for topic selection and CRM/MAP integration. Customers with existing Salesforce or HubSpot setups using Bombora's native apps typically go live fastest. Seeing measurable pipeline impact generally requires 60–90 days of active use as teams calibrate topic selection and activation playbooks.

Does Bombora have a Claude Code Skill or Claude Plugin?

Bombora 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.

Does ContactOut find personal email addresses as well as work emails?

Yes. ContactOut is one of the few platforms that consistently surfaces personal email addresses (Gmail, Yahoo, etc.) alongside verified work emails. This is especially valued by recruiters trying to reach passive candidates who may not monitor corporate inboxes.

What is the ContactOut free plan and what are its limits?

The free plan allows 5 email lookups, 5 phone number lookups, and 5 exports per day with no time limit. It includes access to the Chrome extension for LinkedIn prospecting, making it useful for low-volume individual users.

How accurate is ContactOut's contact data?

ContactOut claims up to 97% email accuracy through its dual verification system, which cross-checks data across multiple trusted sources. Data is refreshed every 15 days to reduce decay from job changes.

Does ContactOut integrate with Salesforce and HubSpot?

Yes. ContactOut integrates natively with Salesforce, HubSpot, and Lever, and also offers a REST API for building custom enrichment pipelines into other CRM and ATS platforms.

Is ContactOut GDPR compliant?

Yes. ContactOut is fully compliant with GDPR, CCPA, and US privacy laws. The platform sources and processes personal data in accordance with applicable data protection regulations.

What does ContactOut cover beyond email — does it include phone numbers and company data?

Yes. ContactOut provides direct phone numbers and mobile numbers alongside emails, and enriches company profiles with firmographic data including industry, company size, revenue, and LinkedIn company profiles. The database covers 300M+ professionals and 30M+ companies.

Does ContactOut have a Claude Code Skill or Claude Plugin?

ContactOut 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.