Apollo.io vs Clay
Apollo.io vs Clay, compared side by side on 19 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Apollo.io is on 53/100 and Clay on 43/100.
Where each one leads
Apollo.io
- our overall score: 53/100 against 43/100
- LinkedIn following: 295,171 against 158,260
Clay
- agent readiness: 59/100 against 44/100
At a glance
| Measure | Apollo.io | Clay |
|---|---|---|
| What it is | Apollo.io is an AI-powered go-to-market platform for B2B sales, offering tools for prospecting, multichannel outreach, data enrichment, and deal management to accelerate pipeline generation and close deals. | Clay provides an AI-powered platform for go-to-market teams to automate data enrichment, lead generation, and personalized outreach, leveraging over 100 data sources to turn insights into revenue. |
| Category | Sales Data Providers, Sales Data, Sales Engagement Platform, Sales Enablement | MarTech, AdTech, Sales Enablement, Data Enrichment |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Software |
| Founded | 2017 | 2021 |
| Headquarters | San Francisco, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Apollo.io | Clay |
|---|---|---|
| Employees | Not published | 1,242 |
| Total funding | Not published | $3.0B |
| Latest round | Not published | Seed |
| LinkedIn followers | 295,171 | 158,260 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Apollo.io | Clay |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 53/100 | 43/100 |
| Traction | Not published | 60/100 |
| Team | 30/100 | 30/100 |
| Community | Not published | 8/100 |
| Search visibility | 54/100 | 75/100 |
| Quality | 78/100 | 35/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (44/100) | D (59/100) |
| Domain ratingLink authority, 0-100 | 84/100 | 79/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Apollo.io | Clay |
|---|---|---|
| Hosting | Netlify | AWS |
| CDN | Cloudflare | Cloudflare |
| CMS | Not detected | Webflow |
| Frameworks | Next.js, Tailwind CSS | Tailwind CSS |
| Analytics | Google Tag Manager, Amplitude | Google Analytics 4, Google Tag Manager, Segment |
Product and pricing
| Measure | Apollo.io | Clay |
|---|---|---|
| Key features | Pipeline Builder, Living Data Network, Multichannel Outreach, AI Assistants & Scoring, Data Enrichment, Call Assistant & Conversation Intelligence | Multi-provider Data Enrichment, AI Research Agents, Flexible & Iterative Workflows, Real-time Intent Signals, Automated Outbound & Inbound, GTM Stack Consolidation |
Apollo.io vs Clay: common questions
Which is better, Apollo.io or Clay?
On our 0-100 score Apollo.io rates higher (53/100 against 43/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 19 data points above: read the rows that match what you are buying for.
How do Apollo.io and Clay compare on the numbers?
Apollo.io leads on our overall score (53/100 against 43/100), LinkedIn following (295,171 against 158,260). Clay leads on agent readiness (59/100 against 44/100).
Read the full Apollo.io review and pricing or the Clay review and pricing. You can also browse other Apollo.io alternatives we track.

