Leadex vs Apollo.io
Leadex is a chat-native B2B lead research agent. Apollo.io is a proprietary contact database with a filter-and-sequence UI. They solve different halves of the same funnel - here is where each one wins and how to run both.
Last updated - by Artyom Rabzonov, Founder
Short answer
Apollo owns a proprietary contact database; Leadex owns none and composes open-web search, a cloud browser agent, and your own Apollo key into a per-run research plan. Use Apollo when the ICP fits inside its filter dropdowns and you need bulk export. Use Leadex when the ICP is described in a sentence, not a dropdown - or when you want to preview and approve the research plan before any credits are spent.
| Capability | Leadex | Apollo.io |
|---|---|---|
| Primary interface | Chat-native research agent | Filter dropdowns over a database |
| Data source | Open web + your enrichment keys | Apollo's proprietary contact graph |
| Owns contact DB? | No - BYO keys | Yes |
| Pricing model | BYO-key, no per-contact markup | Seat + credit tiers apollo.io/pricing |
| Handles unstructured ICPs | Yes - plain-English brief | Filter-bounded only |
| Human-in-the-loop approval | Plan preview, approve or stop before spend | No plan - runs against filters immediately |
| Live execution log | Streaming, in-chat | N/A |
| Sequencer / outreach | No - pushes to your CRM | Yes - built-in email & dialer |
| CRM sync built-in | HubSpot + growing weekly | HubSpot, Salesforce, more |
| Best fit | SDRs & founders who describe ICPs in sentences | Bulk contact export + sequencing from a large DB |
The trade: Apollo gives you a huge filter-searchable contact graph and an outreach sequencer. Leadex gives you a research agent that can describe an ICP in prose, preview the plan, and use your Apollo key for the enrichment step. Most teams that care about unusual ICPs run both.
FAQ
Is Leadex a replacement for Apollo.io?
Not directly. Apollo owns a proprietary contact database of a few hundred million records; Leadex owns none and instead composes open-web search, a cloud browser agent, and your own Apollo (or other) key into a per-run research plan.
Most teams keep Apollo as the contact-graph source and add Leadex for ICPs Apollo's filters cannot express.
Can Leadex use my Apollo API key?
Yes. Store the key in Settings -> Credentials. When a research plan reaches the enrichment step, Leadex routes those specific rows to Apollo and the usage is billed by Apollo directly - there is no Leadex markup on top.
Which is cheaper - Leadex or Apollo?
Leadex has no per-contact price, so the floor is lower. But the two are not strict substitutes: a team that relies on Apollo's database still pays Apollo's seat + credit tiers, with Leadex adding a modest research-run cost on top. Teams that do not need Apollo's database at all will generally pay less by running Leadex alone.
When should I pick Apollo over Leadex?
Pick Apollo when your workflow is "filter a large contact database, export thousands of rows, sequence them". Apollo's DB + sequencer is hard to beat for filter-bounded bulk prospecting.
Pick Leadex when the ICP is unusual enough that Apollo's filters cannot describe it - cross-signal, niche vertical, or event-triggered - or when you want a plan-preview before spending budget on enrichment.
Other comparisons
Try the research agent side
Leadex is free to try. Bring your own Apollo and CRM keys - no per-contact markup.
Open app →