Seamless.AI vs Clearbit (by HubSpot)
Side-by-side from the Top 11 ranking of The 11 Best Lead Generation Tools. Last verified June 20, 2026.
The short answer
Seamless.AI ranks higher on Top 11 (#5 vs #8) for Sales and marketing teams building top-of-funnel pipelines. Offers unlimited credits for high-volume prospecting teams.
At a glance
| Seamless.AI | Clearbit (by HubSpot) | |
|---|---|---|
| Top 11 rank | #5 / The 11 Best Lead Generation Tools | #8 / The 11 Best Lead Generation Tools |
| Score (out of 9.4) | 8.4 | 7.8 |
| Best for | Unlimited contact credits | Best for data enrichment |
| Pricing | $$$ ($149 to $250/user/mo) | $$$ (Custom pricing) |
| HQ | Columbus, OH, USA | San Francisco, CA, USA |
| Founded | 2018 | 2014 |
Clearbit (by HubSpot)
The top solution for enriching inbound leads and website traffic.
www.clearbit.comMethodology and scoring weights live at /methodology. No vendor pays for placement — see about.