Explorium vs Apollo.io vs UpLead

Objective, side-by-side analysis of Explorium, Apollo.io, and UpLead 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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UpLead

4.7

The most accurate B2B database — 95% data accuracy guaranteed with real-time verification at every export

  • API
  • Free Trial
  • GDPR Compliance
16M+
Companies
160M+
People
50+
Data Points

Selected Customers

Dropbox • Accenture • Salesforce • IBM • Google • Oracle • HubSpot

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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

UpLead

  • Verified Lead Generation

    Build highly targeted prospect lists using 50+ filters — including technographics and intent data — with every email verified in real time at the moment of export, ensuring industry-leading deliverability.

  • CRM Enrichment

    Enrich existing CRM records with verified emails, mobile numbers, and firmographic data — plugging directly into Salesforce, HubSpot, and 13 other platforms with no manual CSV handling.

  • Global Account-Based Prospecting

    Target accounts and contacts across 200+ countries with consistent data quality, using company-level filters like revenue, headcount, and technology stack to build ABM-ready lists.

Signals powering these use cases

  • Real-time email verification on export
  • Technographic filtering
  • Intent data signals
  • Email pattern intelligence

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

UpLead Snapshot

  • Company coverage 1.8
  • Signals depth 1.4
  • Freshness 4.2

Detailed Feature Comparison

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

Feature Comparison
Explorium
Apollo.io
UpLead
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
Available on all paid plans
SLA
Up to 99.999% uptime; rate limit 200 requests/min per key
24-hour RTO/RPO; quarterly audits; annual third-party penetration testing
-
Compliance
GDPR, SOC 2, CCPA, ISO 27001
GDPR, SOC 2 Type II, ISO/IEC 27001, CCPA; CASA compliant
GDPR and CCPA compliant; DPA 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
200+ countries
CRM Integration
Available on custom enterprise plans
Bidirectional sync with Salesforce, HubSpot, Zoho; bulk invite and field mapping supported
Salesforce, HubSpot, Pipedrive, Zoho, Dynamics 365, and 10+ others
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 app with Chrome extension
Natural language search
Workflow automation
Automation integrations
n8n, Claude, custom webhook integrations
Zapier, Intercom, Zendesk, ServiceNow, Klaviyo, Salesloft, Outreach
Zapier (1,500+ apps)
Company coverage
150M+ company profiles
30M+ company profiles
16M+ global company profiles
People coverage
800M+ people profiles (767M+ verified contacts)
210M+ contact records
160M+ verified B2B contacts
Geographic coverage
150+ countries
Global; strongest in North America; international accuracy lower outside the US
200+ countries
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
Aggregated from public web, company websites, business registries, and partner data sources with real-time verification
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 schema and filters across all geographies
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
Real-time email verification at point of export; database updated continuously
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
Company size, revenue range, industry, headquarters, technology stack (16,000+ technologies tracked)
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
Verified email, phone, LinkedIn URL, job title, department, seniority
Enrichment categories
Firmographics, technographics, intent, funding, events, contact, website signals, lookalikes
Firmographics, technographics, demographics, intent data, hiring/growth signals, email verification, direct dials
Email, mobile phone, direct dial, job title, department, firmographics, technographics, intent data, social links
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
Intent data signals indicating active buying behavior
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
Multi-field matching combining name, domain, title, and company
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
Real-time SMTP verification at the moment of download/export — credits charged only for valid emails
Deduplication logic
Advanced ML-based deduplication across 50+ data providers
CRM deduplication via native Salesforce and HubSpot sync with bidirectional updates
CRM-level deduplication via native integrations
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
-
CRM integrations
Custom plan — CRM integrations available
Salesforce, HubSpot, Zoho CRM (bidirectional sync)
Salesforce, HubSpot, Zoho, Pipedrive, Insightly, Microsoft Dynamics 365, Outreach, SalesLoft, Reply.io, Woodpecker, Copper, Nimble, Mailshake, Lemlist, Close
Data warehouse support
Custom plan — warehouse ingestion available
CSV export available; direct warehouse connectors not prominently advertised
CSV export; API for custom 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
ISO/IEC 27001
-
SLA uptime
Up to 99.999% uptime SLA
24-hour maximum RTO and RPO; quarterly security audits; annual penetration testing
-
Pricing model
Usage-based API credits with custom enterprise plans
Per-seat subscription with tiered credit system for data exports
Credit-based subscription
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
1 credit = 1 contact reveal; credits do not roll over
Tier structure
Free trial, Self-serve, Custom Enterprise
Free, Basic ($49/mo), Professional ($99/mo), Enterprise (custom)
Free Trial, Essentials, Plus, Professional
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
5 free credits with no credit card required; not time-limited
Budget commitment options
Custom enterprise plans with volume negotiation
Monthly or annual; enterprise volume negotiation available
Month-to-month or annual; no mandatory long-term contracts
Custom plans available
Bulk deals support
Resell rights
-
-
-

Pricing

Compare pricing models, flexibility, and commitment structure.

Pricing Dimension
Explorium
Apollo.io
UpLead
Pricing Model
Usage-based with custom enterprise plans
Per-seat subscription with credit-based data export limits
Credit-based; one credit = one contact unlock (email + available phone)
Commitment Structure
One-time or custom; no mandatory annual lock-in on self-serve
Monthly or annual; annual plans offered at a discount
No long-term contracts required; month-to-month available on all self-serve plans
Payment Recurrence
One-time or custom
Monthly or annual
Monthly or annual (annual offers ~25% discount)
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
5-credit free trial available — 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
Professional plan includes custom seat counts, higher credit volumes, and team management features
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 across all tiers; Professional plan includes dedicated support

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 Reviewer

Sales Manager, B2B SaaS

"UpLead helps me save time and improve precision when identifying qualified leads. Instead of manually searching or relying on outdated databases, I can quickly filter and access verified contact information that aligns with my target audience — the accuracy improves outreach efficiency and reduces bounce rates."
Verified User for UpLead

Frequently Asked Questions

Is Apollo.io better than UpLead?

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 UpLead The most accurate B2B database — 95% data accuracy guaranteed with real-time verification at every export

What is the difference between Apollo.io and UpLead?

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 UpLead focuses on The most accurate B2B database — 95% data accuracy guaranteed with real-time verification at every export.

How much does Apollo.io cost compared to UpLead?

Apollo.io pricing model: Per-seat subscription with credit-based exports. UpLead pricing model: Credit-based subscription (monthly or annual).

Is Apollo.io or UpLead 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 UpLead?

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 UpLead The most accurate B2B database — 95% data accuracy guaranteed with real-time verification at every export

What is the difference between Explorium and UpLead?

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 UpLead focuses on The most accurate B2B database — 95% data accuracy guaranteed with real-time verification at every export.

How much does Explorium cost compared to UpLead?

Explorium pricing model: Usage-based with custom plans. UpLead pricing model: Credit-based subscription (monthly or annual).

Is Explorium or UpLead 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.

How does UpLead's 95% accuracy guarantee actually work in practice?

UpLead verifies email addresses in real time at the moment you download or export a contact — not from a pre-verified static database. When you initiate an export, UpLead runs an SMTP check against the email server to confirm deliverability before charging a credit. If an email fails verification, it is flagged as invalid and you are not charged. This mechanism is what enables the 95% accuracy guarantee and typically results in user-reported bounce rates well below 5%.

Does UpLead require a long-term contract?

No — this is one of UpLead's clearest differentiators. All self-serve plans (Essentials and Plus) are available on month-to-month billing with no annual commitment required. Annual billing is offered at a ~25% discount for users who want to lock in savings. The Professional team plan may involve annual terms for volume pricing, but standard plans carry no cancellation penalties.

How does UpLead's technographic data work for SaaS prospecting?

UpLead tracks 16,000+ technologies across its company database, allowing you to filter prospects by the specific tools their companies use — for example, filtering for companies using Salesforce but not HubSpot, or finding companies running a specific competitor's product. This makes UpLead particularly effective for SaaS companies targeting competitor customers or seeking accounts with complementary tech stacks.

What is the difference between UpLead's Essentials, Plus, and Professional plans?

Essentials ($99/mo or $74/mo annually) provides 170 credits per month and all core features including email verification, technographics, and CRM integrations — it's a single-user account. Plus ($199/mo or $149/mo annually) provides 400 credits per month and adds intent data access. Professional is a custom-priced multi-seat plan with seat management, higher credit volumes, and dedicated support — pricing typically starts around $599+/month based on team size and usage requirements.

Can UpLead find mobile phone numbers in addition to email addresses?

Yes, UpLead includes phone numbers where available in its database, including direct dials and mobile numbers. However, phone coverage is less comprehensive than email coverage — particularly for international contacts. Phone data is included as part of a standard contact reveal and does not require separate credits, but availability varies by contact and region.

How does UpLead handle GDPR compliance for European contacts?

UpLead is GDPR and CCPA compliant, focusing exclusively on B2B contact data and providing clear opt-out mechanisms for individuals. A Data Processing Agreement (DPA) is available upon request. However, UpLead's infrastructure is primarily hosted in the US, which may be a consideration for organizations with strict EU data residency requirements. Users are responsible for ensuring their own use of the data complies with applicable regulations in their jurisdiction.

Does UpLead have a Claude Code Skill or Claude Plugin?

UpLead 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.