A
ALead Generation AI toolsFull list
Find and enrich prospects.
11 tools3 with a free plan8 with an API
11 tools
AA
Freemium
C
CData enrichment, AI research agents and GTM workflows for sales and marketing teams
Free, from $54/mo
C
Free, from $54/mo
C
Data enrichment, AI research agents and GTM workflows for sales and marketing teams
Lead GenerationFree planAPI
O
OO
Contact
O
AI agents for sales teams covering prospecting, deals, coaching and forecasts
Sales Assistants & CRMAPI
A
AA
From $600/mo
A
Sales platform with AI agents, B2B data, sequences and a parallel dialer
Sales Assistants & CRM
B
BB
Free, from $10/mo
B
Scrape, enrich and qualify sales leads with AI for go-to-market teams
Lead GenerationFree plan
1
11
Contact
1
AI sales agents for outbound prospecting, inbound qualification and expansion
Sales Assistants & CRMAPI
R
RR
From $400/mo
R
Commercial property data and true-owner lookup for U.S. CRE professionals
Real Estate & ConstructionAPI
L
LL
Contact
L
Real estate CRM with IDX websites, lead generation and built-in AI agents
Real Estate & ConstructionAPI
F
FF
Contact
F
People intelligence and AI agents for sourcing, hiring and workforce planning
HR & RecruitingAPI
V
VV
Contact
V
Continuously updated company data on 693M businesses for risk and sourcing teams
Data Analysis & BIAPI
Y
YY
Contact
Y
AI text and voice agents that generate and qualify real estate leads for agents
Real Estate & Construction
Lead Generation tools compared
From each vendor's own pages, re-checked every two months. Of 11 tools we checked, 1 of 2 that state a policy don't train AI on your content, and 5 hold SOC 2 or ISO 27001.
| Tool | Waterfall enrichment | Phone numbers | Intent & job-change signals | Built-in sequences | MCP server |
|---|---|---|---|---|---|
| AApollo.io | |||||
| CClay | — | ||||
| OOutreach | — | — | — | ||
| AAmplemarket | — | — | — | ||
| BBardeen | — | — | — | — | |
| 111x.ai | — | — | — | — |
— means the vendor's site doesn't say.
How to choose lead generation tools
Start with who you're prospecting. Most tools here target B2B sales: Apollo.io, Clay, Amplemarket, Outreach, 11x.ai and Bardeen. Findem and Fetcher are built for sourcing job candidates. Reonomy covers U.S. commercial property owners. Ylopo and Lofty serve residential real estate agents. Veridion supplies company-level data for risk and sourcing teams.
Next, decide whether you need data, outreach, or both. Clay, Veridion and Bardeen focus on finding and enriching records. Apollo.io and Amplemarket add sequences on top of their contact data, and Amplemarket also includes a dialer. 11x.ai and Outreach run AI agents across prospecting and qualification.
Pricing is the third difference. Apollo.io and Clay have free tiers, and Clay's paid plans start at $54/mo. Amplemarket ($600/mo) and Reonomy ($400/mo) offer free trials. Many others require you to contact sales.
Finally, check integrations. Apollo.io, Clay, Findem, Outreach, 11x.ai, Reonomy, Lofty and Veridion offer APIs. Apollo.io has a Chrome extension, and Fetcher, Outreach and 11x.ai connect to Slack.
Frequently asked questions
Are there free lead generation tools?
Apollo.io and Clay both have free tiers. Amplemarket and Reonomy offer free trials before their paid plans start.
How much do lead generation tools cost?
Among the listed prices, Clay starts at $54/mo, Reonomy at $400/mo and Amplemarket at $600/mo. Findem, Outreach, 11x.ai, Ylopo, Lofty and Veridion require you to contact sales. We don't have pricing for Bardeen or Fetcher.
What should I look for in a lead generation tool?
Check that the tool covers your audience: B2B buyers, job candidates or real estate leads. Then decide whether you need data enrichment alone or built-in outreach too, and check for API access and integrations such as a Chrome extension or Slack.
What are alternatives to Apollo.io?
Amplemarket also combines B2B data with sequences. Clay focuses on enrichment and research workflows. Outreach and 11x.ai use AI agents for prospecting and qualification.