
SpecialistAutomate work across thousands of apps — no code required
Clay records 1,267,465 monthly visits with -2.7% month-over-month growth and Freemium, Free Trial, Contact for Pricing pricing. LinkupAPI records 37,347 monthly visits with +7.1% growth and Paid pricing.

One outreach API to reach prospects on LinkedIn, email, WhatsApp and iMessage
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | clay.com | linkupapi.com |
| Pricing Model | Freemium, Free Trial, Contact for Pricing | Paid |
| Monthly Visits | 1.27M (1,267,465) | 37.35K (37,347) |
| MoM Traffic Delta | -35.69K (-2.7%) | +2.46K (+7.1%) |
| Primary Market & Share | 🇺🇸 United States (42.4%) | 🇳🇱 Netherlands (25.6%) |
| Direct Visits / mo | 744.96K | 7.87K |
| User Rating | 4.7 | 4.3 |
| Supported Platforms | Website | Website |
Build GTM systems that turn data into revenue
Query 200+ data and AI providers from one contract and cascade across them to maximize coverage and accuracy.
Clay's global agent and account agents research companies and people with AI, then score and route leads automatically.
Monitor job changes, promotions, hiring activity, and other buying signals to target accounts at the right moment.
Chain enrichment, reasoning, and outreach into long-running workflows, or build programmatically with Clay's CLI, API, and MCP tooling.

One outreach API to reach prospects on LinkedIn, email, WhatsApp and iMessage
Send on LinkedIn, email, WhatsApp and iMessage with the same request format, and receive all replies on a single webhook.
Search people, pull full profiles, company details, job postings and funding rounds as JSON for your product or agent.
Verify, find and enrich professional email addresses at scale, with real-time deliverability checks.
Run searches, messages and reply reads from Claude, ChatGPT, Cursor or any MCP-compatible client.

SpecialistAutomate work across thousands of apps — no code required

Combines cold email campaigns with verified leads, but focuses more on outreach execution than deep enrichment.

Free / Open-sourceWeb search API and crawler built for AI agents
AI agents that work the revenue lifecycle alongside your sellers

Excels at cold email deliverability and automation, but offers fewer options for complex multi-source data enrichment.
Excels at cold email deliverability and automation, but offers fewer options for complex multi-source data enrichment.

Offers lead generation and email warmup features, but lacks the deep data orchestration and scraping flexibility.
Offers lead generation and email warmup features, but lacks the deep data orchestration and scraping flexibility.

Free / Open-sourceOne key for 4,100+ agent tools, pay per call
SpecialistBuild, share, and control AI agents that actually do the work
SpecialistBuild, share, and control AI agents that actually do the work

Provides unified sales prospecting workflows, but is less flexible for custom spreadsheet-based data enrichment.
Provides unified sales prospecting workflows, but is less flexible for custom spreadsheet-based data enrichment.

Free / Open-sourceUnlimited LinkedIn and email outreach, powered by AI SDR agents
Free / Open-sourceUnlimited LinkedIn and email outreach, powered by AI SDR agents

Free / Open-sourceOne GTM data API for prospecting, enrichment and AI agents
AI sales engagement and cold email outreach on autopilot