Apollo.io
AI Sales & RevenueAI-powered sales intelligence platform combining 210M+ contact database, outbound automation, inbound lead routing, and conversation intelligence in one unified system.
Apollo.io is a comprehensive sales intelligence and engagement platform that consolidates data enrichment, prospecting, outbound automation, and conversation intelligence into a single solution. With access to over 210 million contacts and 30 million companies, it enables sales teams to identify prospects, automate multichannel sequences, capture and route inbound leads, and analyze conversations with AI-powered insights. The platform positions itself as a tech stack consolidation tool, replacing separate data providers, outreach platforms, dialers, and enrichment services while maintaining deep CRM integrations.
Best for
Sales and RevOps teams seeking to consolidate their tech stack with a unified platform for prospecting, enrichment, outbound automation, and conversation intelligence.
Last updated: March 19, 2026
27/50
Overall Score
API Quality
8/10
GTM Relevance
19/20
PricingFreemium
Complexitymedium
Learningmedium
Visit apollo.io →API Analysis
REST API
✓
Available
Webhooks
✓
Available
GraphQL
—
—
OAuth
✓
Available
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Pricing
freemiumFree Tier
Free plan with limited credits; Basic starts at $49/user/month; Professional at $79/user/month; Organization at $119/user/month with custom enterprise pricing available.
Strengths & Weaknesses
Strengths
Massive verified B2B database with 210M+ contacts and 30M+ companies, reducing need for multiple data providers
All-in-one platform combining prospecting, enrichment, sequences, dialer, and meeting intelligence with native integration
Built-in email deliverability guardrails and sender reputation management to protect domain health
Advanced filtering and segmentation with buyer intent signals for precise targeting
Robust API with webhooks, OAuth, and comprehensive documentation for custom integrations
Weaknesses
Data accuracy can vary by region and industry, with some contacts outdated or incorrect
Medium learning curve due to feature density; teams need time to leverage full platform capabilities
Credit-based pricing model can become expensive for high-volume prospecting teams
Some users report UI complexity and performance issues when managing large lists
Alternatives
Reviews
Links
FAQ
What is Apollo.io?
Apollo.io is a comprehensive sales intelligence and engagement platform that consolidates data enrichment, prospecting, outbound automation, and conversation intelligence into a single solution. With access to over 210 million contacts and 30 million companies, it enables sales teams to identify prospects, automate multichannel sequences, capture and route inbound leads, and analyze conversations with AI-powered insights. The platform positions itself as a tech stack consolidation tool, replacing separate data providers, outreach platforms, dialers, and enrichment services while maintaining deep CRM integrations.
Is Apollo.io free?
Yes, Apollo.io offers a free tier. Free plan with limited credits; Basic starts at $49/user/month; Professional at $79/user/month; Organization at $119/user/month with custom enterprise pricing available.
What are Apollo.io alternatives?
Popular alternatives to Apollo.io include Outreach, Salesloft, Cognism, Amplemarket, HubSpot, Salesforce. Compare features, API quality, and pricing on GTM Tools.
Does Apollo.io have an API?
Yes, Apollo.io provides a REST API. API quality is rated EXCELLENT. Documentation: https://apolloio.github.io/apollo-api-docs/.
Who is Apollo.io best for?
Sales and RevOps teams seeking to consolidate their tech stack with a unified platform for prospecting, enrichment, outbound automation, and conversation intelligence.