Apollo.io vs ZoomInfo in 2026: Which Is Better for Your Team?
Apollo vs ZoomInfo is the most common comparison in B2B sales tools. Both are large contact databases. The difference comes down to price, data quality at the edges, and whether you need the enterprise integrations ZoomInfo offers. Here's an honest breakdown — and where a third option might serve you better.
Database size and coverage
ZoomInfo claims 150M+ verified contacts and is the gold standard for US enterprise data. Apollo claims 265M+ contacts but the quality degrades significantly outside their core US database. Both have strong US coverage; ZoomInfo leads for enterprise account data while Apollo has better volume at lower cost.
For international coverage (UK, EU, APAC, Middle East), both platforms have gaps. Sendburg outperforms both for non-US regions with 150M+ contacts verified across 40+ countries.
Pricing — the biggest difference
This is where the comparison becomes stark:
- ZoomInfo SalesOS: $10,000–$50,000+/year, annual contract, no self-serve
- Apollo.io: Free (limited), paid from $49/month, annual contract for best pricing
- Sendburg: Free (1,000 contacts/month), paid from $35/month, no annual contract
ZoomInfo is 3–10× more expensive than Apollo for comparable seat counts. For teams with fewer than 10 reps, ZoomInfo's cost structure rarely makes sense. Apollo is the budget-friendly alternative; Sendburg is more affordable still with better AI features included.
Data quality
ZoomInfo's data quality for US enterprise accounts is the best in the category — built over 20+ years of data collection and verification. Apollo's quality is strong for US SMB/mid-market but drops for enterprise accounts, international data, and mobile numbers.
Both platforms have buyer intent products. ZoomInfo's intent data is a significant add-on ($10,000–$20,000+/year extra). Apollo includes basic intent signals in paid plans.
AI features
Neither Apollo nor ZoomInfo offers AI account briefings comparable to Sendburg's. Apollo has added AI writing assistance for sequences. ZoomInfo has Copilot, an AI research tool for enterprise accounts. Sendburg generates synthesized account briefings — a summary of what's happening at any company — available on all plans.
Which should you choose?
- Choose ZoomInfo if: you're a 50+ rep enterprise team selling $50k+ deals, US-focused, with budget for a $30k+ annual contract
- Choose Apollo if: you need a database + email sequencing in one tool, are US-focused SMB, and want a mid-range price point
- Choose Sendburg if: you want better AI intelligence, international coverage, no annual contract, and don't need native email sequencing (you use Instantly, Lemlist, Outreach, or Salesloft)