Apollo.io vs Clay in 2026: single-vendor contact database vs 150-provider data infrastructure
Apollo.io gives you 275M+ first-party contacts, sequences, and a dialer in one subscription. Clay pulls from 150+ data providers, including Apollo itself, and lets you build enrichment workflows in plain English with an AI research agent.
Apollo.io
Clay- Clay explicitly includes Apollo.io as one of its 150+ data providers, so teams can access Apollo's data through Clay's waterfall without a direct Apollo subscription.
- Apollo.io is a single first-party database of 275M+ contacts. Clay has no database of its own; it queries dozens of third-party providers in priority order until it finds a verified match.
- Clay's Claygent AI agent conducts open web research to find custom data points no structured provider covers. Apollo's AI Research prompts work within its own contact and company data.
- Clay includes unlimited seats on every plan, including Enterprise. Apollo.io's Organization plan requires a minimum of 3 seats.
- Apollo.io includes a built-in phone dialer with call recording and AI insights. Clay has no dialer; it is a data and workflow layer, not a calling tool.
- Clay's Sculptor builds GTM workflows from plain-text descriptions, lowering the barrier for non-technical operators. Apollo.io has no equivalent natural-language workflow builder.
Apollo.io and Clay both show up when GTM teams search for prospecting tools, but they are not really built to replace each other. Apollo.io is a single, self-contained vendor: a 275M+ contact database with sequences and a dialer built on top. Clay is infrastructure that sits above vendors like Apollo, querying a waterfall of 150+ data providers to maximize coverage, then layering an AI research agent and a natural-language workflow builder on top. Clay's own documentation names Apollo as one of the providers it can query, which makes this less a head-to-head and more a question of whether you want one vendor or an orchestration layer over many.
The tools at a glance
Apollo.io
Sales intelligence and outreach platform with 275M+ verified contacts, email sequences, dialer, and AI-powered prospecting.
Apollo.io is a sales intelligence and outreach platform built for B2B sales and growth teams, combining a 275M+ contact database with email sequencing, a phone dialer, LinkedIn automation, AI lead scoring, and workflow automation in one subscription.
The credits-based system meters usage per seat per year, with every export, phone reveal, or enrichment action drawing from a shared pool. Waterfall enrichment on paid plans chains multiple data sources internally, and AI Research prompts surface custom prospect insights on demand.
Apollo owns its own contact data and product experience end to end, which means less setup complexity but also less flexibility if you need a data source or workflow pattern that Apollo does not build natively.
| Feature | Free $0/mo | Basic $49/seat/mo | Professional $79/seat/mo | Organization $119/seat/mo |
|---|---|---|---|---|
| Credits per seat per year | 900 | 30,000 | 48,000 | 72,000 |
| Built-in dialer | No | Yes | Yes | Yes |
| AI lead scoring | No | Yes | Yes | Yes |
| Waterfall enrichment | No | Yes | Yes | Yes |
| Automated workflows | No | No | Yes | Yes |
| Minimum seats | 1 | 1 | 1 | 3 |
Clay
GTM data infrastructure that connects 150+ data providers, runs AI research agents, and builds outbound workflows in natural language.
Clay is a GTM data infrastructure platform that lets revenue teams pull from 150+ data providers, enrich contacts and accounts using AI research agents, and sync audiences or trigger messaging sequences from the same environment.
The core mechanic is the waterfall: when Clay needs a piece of information, it queries multiple providers in sequence until it finds a verified match, yielding higher coverage than any single provider alone. Claygent, Clay's AI research agent, fills gaps that structured data cannot, generating custom data points from open web research. Sculptor lets non-technical operators describe a GTM play in plain text and have Clay build the underlying table logic.
Clay does not maintain its own contact database. Its value is in orchestration: consolidating vendors like Apollo, ZoomInfo, and dozens of others into one credit-metered workflow, which requires more setup investment than a single self-contained tool.
| Feature | Free $0/mo | Launch $167/mo | Growth $446/mo | Enterprise Contact |
|---|---|---|---|---|
| Actions per month | 500 | from 15,000 | from 50,000 | Custom |
| Unlimited seats | Yes | Yes | Yes | Yes |
| Claygent AI research | Yes | Yes | Yes | Yes |
| Multi-provider waterfall | Yes | Yes | Yes | Yes |
| Audiences (ad sync) | No | No | Yes | Yes |
| Clay MCP and Salesforce sync | No | No | Yes | Yes |
Head-to-head feature comparison
| Feature | Apollo.io | Clay |
|---|---|---|
| Primary use case | B2B contact database, outreach sequences, and dialer | Multi-provider data infrastructure and AI-driven enrichment workflows |
| Data provider model | Single first-party database (275M+ contacts) | 150+ third-party providers via waterfall, including Apollo itself |
| Pricing model | Per-seat plus annual credit pool | Monthly action credits, unlimited seats on every plan |
| Starting paid price | $49/seat/mo (Basic) | $167/mo (Launch) |
| Free tier | Yes (900 credits/year) | Yes (500 actions/mo, 200-row table limit) |
| AI research agent | AI Research prompts for custom prospect insights | Claygent, open web-research agent for any custom data point |
| Natural-language workflow building | No | Yes (Sculptor) |
| Built-in phone dialer | Yes (US dialer, Advanced Dialer add-on) | No |
| Native email sequencer | Yes (unlimited on paid plans) | Yes (native email sequencer) |
| Ad audience sync (LinkedIn/Meta/Google) | No | Yes (Growth plan and above) |
| Seat limits | Organization plan requires 3-seat minimum | Unlimited seats included on every plan |
Which should you choose?
Apollo.ioClayClayApollo.ioClayApollo.io and Clay solve adjacent but distinct problems. Apollo.io is a self-contained vendor: buy the subscription, get the database, the sequences, and the dialer. Clay is an orchestration layer that treats vendors like Apollo as interchangeable inputs into a waterfall, adding AI research and natural-language workflow building on top. Teams with straightforward outbound needs and a small team often prefer Apollo.io's simplicity. Teams running sophisticated, multi-source GTM plays graduate to Clay, sometimes while still paying for Apollo underneath it.
Bottom line
Choose Apollo.io if you want a single subscription that covers contact data, sequencing, and calling without additional setup. Choose Clay if your team needs to combine multiple data providers, including Apollo, into one enrichment and workflow layer, and has the time to learn Sculptor and the credit model. Some GTM teams end up running both, using Clay to orchestrate Apollo alongside other providers rather than treating them as competitors.
Frequently asked questions
Does Clay replace Apollo.io?
Clay can replace a direct Apollo.io subscription for data access, since Clay includes Apollo as one of its 150+ providers in its waterfall enrichment. It does not replace Apollo's built-in dialer or its dedicated email sequencing product, which Clay does not offer in the same form.
Can I use Apollo.io and Clay together?
Yes, and many GTM teams do exactly this. Clay can query Apollo's data as part of its waterfall while a team keeps using Apollo directly for its dialer and sequences, treating Clay as an orchestration layer over Apollo and other providers rather than a straight replacement.
Which is cheaper for a small team, Apollo.io or Clay?
Apollo.io is generally cheaper for a small team since it starts at $49 per seat per month with a usable free tier, while Clay's first paid plan, Launch, starts at $167 per month regardless of team size, though Clay includes unlimited seats on every plan.
What does Claygent do that Apollo.io's AI Research does not?
Claygent conducts open web research to find custom data points that no structured data provider covers, such as recent product launches or hiring signals phrased in a very specific way. Apollo's AI Research prompts work within Apollo's own contact and company data rather than the open web, so Claygent has a broader but less structured research scope.
Is Clay harder to learn than Apollo.io?
Yes. Clay requires learning waterfall logic, formula syntax, and provider prioritization to build effective tables, which is a real time investment even with Sculptor's natural-language assistance. Apollo.io's prospecting and sequencing workflows are more immediately usable for a rep without a setup phase.