telli lands $15M seed round led by Redalpine to build AI for customer-facing calls

telli has raised a $15 million seed round led by Redalpine. The company builds an AI voice platform designed to handle customer-facing calls across sales, operations, and support functions. Its agents are deployed by hundreds of businesses, from large enterprises to smaller firms, to automate tasks such as lead qualification, appointment scheduling, payment reminders, upselling, and customer reactivation.

The platform offers named AI agents—Emma for lead qualification, Daniela for customer support, Sara for appointment booking, and others—that can make millions of calls in multiple languages. telli positions itself as a tool for teams that want to offload routine phone work to AI while maintaining control over outcomes.

The new capital will be used to build out telli’s AI capabilities for customer-facing operations. The company’s website highlights use cases that span sales uplift, operational streamlining, and customer service, with specific vertical solutions for solar and HVAC, healthcare, real estate, insurance, recruiting, energy, financial services, consumer, and telecom. Public customer case studies include Enpal, Sky, Zenjob, Bark, Engel & Völkers, McMakler, Homeday, and Verivox.

Redalpine’s lead investment signals conviction in AI-native voice agents that go beyond simple chatbots to manage end-to-end phone interactions. telli’s agents are built to integrate with existing calendars and payment systems, and the company provides an API for developers to schedule calls programmatically. The round arrives as voice AI attracts growing attention from investors betting on automation of high-volume, repetitive call center tasks. telli’s focus on customer-facing operations—not just internal workflows—places it among a crop of startups aiming to replace or augment traditional call center agents with AI that can sell, support, and operate autonomously.