One API key for hundreds of AI models from every major provider
#1LinkupAPI records 37,347 monthly visits with +7.1% month-over-month growth and Paid pricing. Treg records 452,935 monthly visits with +223.4% growth and Freemium pricing.

One outreach API to reach prospects on LinkedIn, email, WhatsApp and iMessage
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | linkupapi.com | treg.to |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 37.35K (37,347) | 452.94K (452,935) |
| MoM Traffic Delta | +2.46K (+7.1%) |
| +312.9K (+223.4%) |
| Primary Market & Share | 🇳🇱 Netherlands (25.6%) | 🇺🇸 United States (36.8%) |
|---|
| Direct Visits / mo | 7.87K | 235.3K |
|---|
| User Rating | 4.3 | 4.5 |
|---|
| Supported Platforms | Website | Website |
|---|

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.

One key for 4,100+ agent tools, pay per call
A single treg token routes to 4,100+ endpoints across 127 providers, so no per-provider signups or scattered key files.
See each provider's price plus measured success rate, speed, and last-answer time, and pin a preferred vendor when you want.
Pay fractions of a cent per call with the price shown before you commit, no monthly seats required.
Route calls through your existing provider keys at no markup; credentials are injected server-side and never stored on a machine.
One API key for hundreds of AI models from every major provider
#1
Provides comprehensive pre-built tool integrations for AI agents, but lacks Treg's open-source pay-per-call API catalog.

SpecialistProvides advanced browser automation and live web fetching, but lacks a general pay-per-call API marketplace.
#3
SpecialistExcels at AI-optimized web search and crawling data, but lacks broader multi-app tool integration capabilities.
One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control

Free / Open-sourceOffers an open-source AI gateway for model routing, but focuses on LLMs rather than general data endpoints.


Offers universal B2B data and tool integrations for agents, but focuses less on pay-per-call API monetization.

Delivers robust managed integration workflows and triggers for agents, but offers fewer native MCP-specific endpoints.

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

One universal API for 500+ AI models and 1,000+ agentic tools

Free / Open-sourceOne GTM data API for prospecting, enrichment and AI agents
Provides enterprise-grade AI gateway features and observability, but lacks open-source pay-per-call API monetization tools.
Provides comprehensive pre-built tool integrations for AI agents, but lacks Treg's open-source pay-per-call API catalog.
One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
Free / Open-sourceUnlimited LinkedIn and email outreach, powered by AI SDR agents
Provides enterprise-grade AI gateway features and observability, but lacks open-source pay-per-call API monetization tools.