Telli Secures $3.6M Pre-Seed Funding to Scale AI Voice Agent Solutions

Revolutionizing Customer Service with AI-Powered Voice Agents

Berlin-based startup Telli, a Y Combinator alum, has successfully raised $3.6 million in pre-seed funding. The round was led by Cherry Ventures and Y Combinator, fueling the company’s mission to transform customer service operations through advanced AI voice agents.

Addressing Customer Service Bottlenecks

Telli’s AI voice agents are designed to:

  • Automate high-volume customer interactions
  • Handle basic operations like appointment scheduling
  • Seamlessly transfer complex queries to human agents
  • Perform callbacks and even assist in closing deals

Founded by Seb Hapte-Selassie, Philipp Baumanns, and Finn zur Mühlen, Telli focuses on creating AI agents that integrate naturally into existing business workflows.

Impressive Growth Metrics

The startup reports:

  • 50%+ month-over-month revenue growth
  • Nearly 1 million phone calls processed
  • Global customer base across Germany, UK, Latin America, and the US
  • All achieved with just a six-person team

Founder Insights: Solving Real-World Challenges

CEO Finn zur Mühlen shared the inspiration behind Telli: “While scaling customer service at German unicorn Enpal, we witnessed firsthand the challenges of call automation and performance management in customer acquisition.”

Telli’s solution goes beyond simple call handling. “Our AI agents deliver tangible results,” zur Mühlen explained, “including appointment booking, lead qualification, and personalized product recommendations.”

Technology Behind the Voice

Telli employs a sophisticated tech stack:

  • Voice cloning using ElevenLabs and Cartesian AI platforms
  • Multiple AI models (including OpenAI and Claude)
  • Dynamic model switching to ensure optimal performance

“We constantly evaluate different AI solutions,” zur Mühlen noted, “to provide our customers with the best available technology.”

Future Expansion Plans

With this new funding, Telli plans to:

  • Expand its global footprint
  • Enhance its AI capabilities
  • Grow its team to support increasing demand

The startup is well-positioned to capitalize on the growing need for efficient, AI-driven customer service solutions in an increasingly digital business landscape.


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