Clay has a Proven Score of 64/100 (Established). Apollo.io has a Proven Score of 61/100 (Established). Clay ranks higher in Prospecting & sales data. Both are in Prospecting & sales data on the Proven Trust Index. Vendors cannot pay to change a score. Scores can't be bought.
| Input | Apollo.io | Clay |
|---|---|---|
| Proven marketplaces | 14 / 15 | 10.9 / 15 |
| Member redemption clicks | 12.9 / 15 | 4.6 / 15 |
| Client quality | 12 / 20 | 20 / 20 |
| Operating tenure | 7.3 / 10 | 6 / 10 |
| Market standing | 6 / 10 | 6 / 10 |
| Connected relationships | 0 / 10 | 3.5 / 10 |
| Connected data | 0 / 5 | 3 / 5 |
Shared
No recorded best-for field differs.
Apollo.io · Clay · Best Prospecting & sales data for startups, ranked by the Proven Trust Index
Data updated 2026-10-27.
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Scores can't be bought. Data updated 2026-10-27. About the data · Proven