Head to head
Apollo.io vs Seamless.AI
As a data enrichment API, Apollo.io rates higher on the APIbenchmarks Index, 80.1 to 68.3, a 11.8-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Apollo.io | Seamless.AI |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 80.1 | 68.3 |
Specifications
| Apollo.io | Seamless.AI | |
|---|---|---|
| Best for | Sales engagement plus enrichment | Prospecting teams wanting UI plus API and MCP |
| Free tier | 10k credits/mo (verified corporate domain) or 100/mo | Free plan (50 lifetime credits per third party; API eligibility unconfirmed) |
| Pricing | Per credit (email 1, phone 8) | Per credit; sales-led Pro/Enterprise |
| Official SDKs | 6 languages | 6 languages |
Is Apollo.io better than Seamless.AI?
On the APIbenchmarks Index, Apollo.io rates higher (80.1 vs 68.3). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.