Apollo.io vs The Companies API
A factual comparison of features, pricing, and capabilities.
Apollo.io
All-in-one sales intelligence and engagement platform combining a 275M+ contact database with automated sequences, email outreach, dialer, and AI-powered workflows for prospecting at scale.
The Companies API
The Companies API is a company enrichment API that turns a domain name into a structured company profile with firmographics such as industry, employee count, founding year and revenue across 50 million companies. Plans are monthly credit allowances with a request-rate limit.
Pricing comparison.
Monthly rates shown. Annual billing may offer discounts. Visit official sites for current pricing.
Feature comparison.
| Feature | Apollo.io | The Companies API |
|---|---|---|
| B2B contact and company database (275M+ contacts) | ||
| Multi-channel sequences (email, phone, LinkedIn) | ||
| AI-powered email writing and optimization | ||
| Built-in dialer with call recording | ||
| Automated workflows and engagement rules | ||
| A/B testing for email sequences | ||
| Buying intent signals and job change alerts | ||
| Advanced lead scoring and filtering | ||
| Email deliverability tools and mailbox rotation | ||
| Conversation intelligence (Professional+) | ||
| Domain to company profile enrichment | ||
| Access to all 50M companies | ||
| Firmographics: industry, employee count, founding year, revenue | ||
| Company lists | ||
| Additional credits at a per-1,000 rate | ||
| Rate-limited API by plan |
Native integrations.
Apollo.io
The Companies API
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Information gathered from official sources and may change. Pricing and features last verified 9/4/2026. Please visit the official websites for the most current information.