Apollo and ZoomInfo are the two most compared B2B prospecting databases. ZoomInfo has been the enterprise standard for a decade. Apollo emerged as the challenger, offering 80-90% of ZoomInfo’s core functionality at a fraction of the cost. In 2026, the gap has narrowed further. This comparison covers data quality, pricing, intent signals, sequencing tools, and which platform fits each team size.
| Feature | Apollo | ZoomInfo |
|---|---|---|
| Starting price | Free tier; $49/user/mo (Basic) | ~$15,000/year (1 user, annual) |
| Contact database | 275M+ contacts | 265M+ contacts |
| Company database | 73M+ companies | 100M+ companies |
| Email accuracy | 78-85% (varies by tier) | 85-92% (premium data) |
| Mobile/direct dials | Yes (credit-based) | Yes (premium, more coverage) |
| Intent data | Basic (job postings, news) | Advanced (Bombora + ZoomInfo signals) |
| Built-in sequencer | Yes (Apollo Sequences) | Yes (ZoomInfo Engage) |
| Chrome extension | Yes | Yes |
| CRM integrations | Salesforce, HubSpot, Pipedrive | Salesforce, HubSpot, MS Dynamics |
| API access | Yes (paid plans) | Yes (enterprise) |
| Data enrichment | Yes | Yes (deeper) |
| Technographics | Yes | Yes (more depth) |
| Firmographics | Yes | Yes |
| Contract flexibility | Monthly available | Annual contract (typically) |
| Free trial | Yes (free forever tier) | Demo only |
| Ease of use | High | Medium (steeper learning curve) |
Note: ZoomInfo does not publish official pricing. Figures are community estimates and vary by negotiation.
Both platforms have millions of contacts, but raw count isn’t what matters. What matters is how often the email address you export actually delivers. Based on community testing and email verification results:
| Segment | Apollo accuracy | ZoomInfo accuracy |
|---|---|---|
| Fortune 500 contacts | 78-84% | 88-93% |
| Mid-market (100-1,000 employees) | 80-87% | 85-90% |
| SMB (<100 employees) | 72-80% | 75-82% |
| EMEA contacts | 65-75% | 70-80% |
Regardless of source, always verify your list with BounceZero before sending - even ZoomInfo exports have 8-15% stale addresses.
You’re an SMB or mid-market team with a budget under $5,000/year for prospecting data. Apollo gives you a full prospecting stack (search, email find, sequences) in one tool at a price that scales with your team size. Also ideal if you want month-to-month flexibility without annual contracts.
You’re an enterprise team targeting Fortune 1000 accounts, need Bombora intent data, require deep technographic filtering, or have a sales ops team that will leverage the full platform. ZoomInfo’s advantage shows most clearly at the top of the market where data freshness and intent signals drive pipeline materially.
You’re a fast-growing company where Apollo handles SMB pipeline and ZoomInfo powers enterprise account targeting. Some teams run Apollo for volume and ZoomInfo for strategic accounts. With Clay’s waterfall enrichment, you can pull from Apollo first and fall back to ZoomInfo only on misses.
Apollo has closed the gap significantly with ZoomInfo on data coverage and accuracy since 2022. For most SMB and mid-market teams, Apollo’s data quality is sufficient and its price advantage is substantial. ZoomInfo still leads on enterprise data depth, intent signals, and coverage of very large accounts.
Apollo starts at $49/user/month for basic access and $99/user/month for full features. ZoomInfo starts at approximately $15,000/year for a single-user license. Apollo is 5-20× cheaper than ZoomInfo depending on team size and tier.
The most common reason is cost. ZoomInfo contracts are expensive, locked into annual terms, and include data categories many teams don’t need. Apollo offers similar core functionality at 80-90% lower cost. Teams switching typically maintain 85-95% of their prospecting capability.
Even the best B2B databases have 8-15% stale data. BounceZero cleans your Apollo or ZoomInfo export before it hits your sequencer. 100 free credits, no card required.
Apollo, ZoomInfo, Lusha and Cognism all have accuracy gaps - verify exports before sending
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