telli

telli is building AI voice agents that convert leads into sales opportunities for B2C companies. For example, a leading home-buying platform is using telli to fully automate their pre-qualification.

We are serving customers in energy, real estate, medical products, and home services.

You might think that these B2C companies want to do more self-serve and less outreach. But the truth is outbound calls are what really drive conversion. Historically, managing these calls has been complex and expensive:costing companies hundreds of thousands of dollars. With telli, for the first time, B2C companies can automate the role of a pre-sales agent, end to end.

High-Level Overview

Telli is a Berlin-based startup that builds AI-powered phone agents designed to automate and scale high-volume call operations for B2C companies. Its AI voice agents perform tasks such as booking appointments, qualifying leads, and supporting real-time handoffs to human agents, effectively streamlining customer communication in sectors like real estate, energy, healthcare, and financial services. The platform enhances sales outreach by enabling human-like conversations that convert leads into sales opportunities, boosting engagement by up to three times while reducing costs by 70%. Since its launch in late 2024, Telli has processed close to a million calls globally with a lean team, demonstrating strong growth momentum and expanding its customer base across Germany, the UK, Latin America, and the US[1][2][3][4].

Origin Story

Telli was founded in 2024 by Seb Hapte-Selassie (CTO), Finn zur Mühlen (CEO), and Philipp Baumanns (COO). The founders brought together deep expertise from their previous roles at Enpal, a German energy unicorn, where they experienced firsthand the operational challenges of managing large-scale call centers for customer acquisition. Seb, a Stanford-trained computer scientist, contributed AI research and technical depth, while Finn and Philipp leveraged their operational experience. The idea emerged from the need to automate and improve the efficiency of outbound call-heavy sales environments, leading to the development of AI voice agents that do more than mimic voices—they achieve real outcomes like booking appointments and prequalifying leads. Early traction included rapid revenue growth of over 50% month-over-month and processing nearly a million calls within months of launch[1][2][4].

Core Differentiators

• Outcome-Focused AI Agents: Telli’s AI agents are designed to complete specific sales tasks end-to-end, such as booking appointments, qualifying leads, and making product suggestions, not just simulate conversation.
• Human-AI Collaboration: The platform supports seamless handoffs to human agents for complex interactions, ensuring operational reliability and customer satisfaction.
• Multi-Modal Communication: Uses a smart calling strategy combined with SMS to maximize lead engagement.
• Voice Realism: Voices are created by professional voice actors and cloned using advanced AI voice-cloning platforms (e.g., ElevenLabs, Cartesian AI), making conversations indistinguishable from human calls.
• Global Reach & Scalability: Supports multiple languages and time zones, serving customers across Europe, the Americas, and beyond.
• Lean, High-Performance Team: Achieved significant scale and call volume with a small team, reflecting efficient operations and rapid product iteration[1][2][3][4].

Role in the Broader Tech Landscape

Telli rides the wave of AI-driven automation in customer engagement and sales, addressing the growing demand for scalable, cost-effective outbound call solutions. The timing is critical as businesses face increasing pressure to optimize customer acquisition costs and improve conversion rates amid high call volumes. Market forces such as advances in natural language processing, voice cloning, and AI integration enable Telli to offer a sophisticated alternative to traditional call centers. By blending AI with human oversight, Telli influences the broader ecosystem by setting new standards for AI-human collaboration in sales operations, particularly in complex B2C sectors like energy, insurance, and healthcare where regulatory and operational challenges are significant[1][2][4].

Quick Take & Future Outlook

Looking ahead, Telli is poised to deepen its penetration in regulated and complex sectors such as insurance and healthcare, where its AI-driven automation can deliver substantial operational efficiencies. Continued innovation in AI models and voice technology will likely enhance the naturalness and effectiveness of its agents. As the startup expands geographically and broadens its customer base, it may evolve into a category-defining platform for AI-powered sales automation. Trends such as increased AI adoption in customer service, demand for personalized outreach, and the need for hybrid AI-human workflows will shape Telli’s journey, potentially positioning it as a global leader in AI voice call automation[1][2][4].