telli technologies GmbH
Category: Voice / Speech AI
AI voice agents designed to automate B2C sales outreach and customer service calls, handling tasks such as lead qualification, appointment booking, callbacks, and product suggestions. telli technologies GmbH was founded in 2024. The company is led by Finn zur Mühlen. Based in Berlin, Germany. Team size: 6. Total funding raised: $3.6 Million. Latest round: Pre-seed (April 2025). Key investors include Cherry Ventures, Y Combinator.
- Founded
- 2024
- Headquarters
- Berlin, Germany
- Team size
- 6
- Total funding
- $3.6 Million
Value proposition
Automates routine call tasks to boost conversion rates (claims 3x increase), reduce operational costs (claims 70% reduction), and allow human agents to focus on complex interactions.
Products and solutions
AI Sales Agent, Automated Callbacks & Appointment Booking Solution, CRM Integrations
Unique value
Offers human-like AI voice agents using advanced voice cloning (via platforms like ElevenLabs and Cartesian) for seamless real-time collaboration with human agents.
Target customer
B2C companies with high-volume call operations seeking to streamline lead conversion and enhance customer engagement.
Industries served
Sales, Customer Service, Call Centers
Technology advantage
Leverages founders' deep operational expertise from Enpal combined with multiple AI models (OpenAI, Claude) to deliver tailored automation for B2C engagement.
How they differentiate
Focuses on scalable, human-like voice AI with outcome-driven automation and robust human-AI collaboration, specifically tailored for B2C pre-sales and customer service.
Main competitors
Conversica, Drift, Five9
Key partnerships
Y Combinator (F24 Batch Participant), ElevenLabs, Cartesian, OpenAI, Claude
Notable customers
KitchenAdvisor
Major milestones
Founded in 2024 Accepted into Y Combinator (F24 batch) shortly after founding Raised $3.6M Pre-seed funding in April 2025 Achieved significant early traction with >50% MoM growth Expanded operations to the US & Latin America alongside Europe
Growth metrics
Reported >50% month-over-month revenue growth (Q1/Q2 2025), processing thousands of calls daily with nearly 1 million total calls as of April 2025, and reaching a 6-figure ARR.
Market positioning
Positioned as an advanced AI automation solution that enhances efficiency, conversion rates, and cost-effectiveness in high-volume phone interactions.
Geographic focus
Active in Germany, UK, Latin America, and the US.
Patents and IP
No public information found.
About Finn zur Mühlen
Finn zur Mühlen is a co-founder of telli, a Berlin-based startup that automates customer calls with AI voice agents. Before telli, he was one of the first two employees at the heat pump unit of Enpal, a German energy unicorn, where he helped scale the unit from 0 to 150 employees. As a co-founder at telli, he is in a high-impact engineering role, contributing to both product and architectural decisions for a team building hybrid human-AI customer service solutions. telli recently raised $3.6 million in pre-seed funding. Finn is based in Berlin, Germany.
Official website: https://www.telli.com/