AI Tool Comparison
A side-by-side breakdown to help you pick the right tool for your workflow.
Review Score assesses product quality; Fit Score is specific to a use case. Limited reviews do not establish overall product quality. How reviews work.
Find and contact prospects from a large B2B contact database with built-in outreach and engagement tools. Sales teams work from one platform instead of stitching data and sequencing together.
Pull, enrich, and act on contact and company data through one workflow builder connecting dozens of data providers and AI models. New Actions + Data Credits pricing split platform usage from enrichment cost.
Catalog updated: August 2026
Apollo.io and Clay both compete in Marketing, overlapping most directly on marketing.
Choose Apollo.io if…
Best for sales teams building prospect lists and outreach sequences from verified contact data, and its edge is a database of 275+ million contacts with enriched emails, phone numbers, and technographic data built in. The default sales prospecting tool once you need real contact data behind your outreach, not just a sequencer. Lean toward Clay instead if 75+ data providers combined into one pipeline that resolves conflicts and produces a single clean record matters more for your use case.
Choose Clay if…
Best for go-to-market teams that need enriched, verified prospect data pulled from many sources at once, and its edge is 75+ data providers combined into one pipeline that resolves conflicts and produces a single clean record. The most powerful enrichment tool on the market, expensive and credit-hungry enough that it rewards a team that already knows what it's doing. Lean toward Apollo.io instead if a database of 275+ million contacts with enriched emails, phone numbers, and technographic data built in matters more for your use case.
| Attribute | Apollo.io | Clay |
|---|---|---|
| Category | Marketing | Marketing |
| Pricing | freemium | freemium |
| Pricing Detail | Free / $49/user/mo Basic / $79/user/mo Professional | Free (500 actions) / $167/mo Launch / $446/mo Growth |
| TWF Review Score | Not yet reviewed | Not yet reviewed |